Pub Date : 2024-10-28DOI: 10.1016/j.jma.2024.09.010
Gaohui Li, Haining Yao, Boyuan Fu, Ke Chen, Katsuyoshi Kondoh, Nannan Chen, Min Wang
Welding high-entropy alloy (HEA) to Mg alloy has gained increasing attention for multi-metal structure design, while intrinsic sluggish diffusion kinetics of HEA confines diffusion-controlled interfacial reactions and makes it challenging to establish robust metallurgical bonding. This study investigated welding of FeCoCrNiMn HEA to commercial AZ31 as a model combination to pioneer this field. Interfacial phase separation phenomenon was observed, with the diffusion accelerated by in-situ engineering a submicron-scale thick (∼400–500 nm) HEA nearby the interface into nanocrystalline-structure during friction stir welding. Abundant grain boundaries generated in this nanocrystalline-interlayer serve as diffusion short-circuits and energetically preferred nucleation-sites, which promoted Al in AZ31 to diffuse into HEA and triggered quick separation into body-centered cubic AlNi-type and tetragonal FeCr-type intermetallics. HEA and AZ31 were thus metallurgically bonded by these interfacial intermetallics. The joint shows exceptional strength in tensile lap-shear testing with fracture largely occurred within AZ31 rather than right along interface as commonly reported previously for dissimilar joints.
在多金属结构设计中，高熵合金（HEA）与镁合金的焊接越来越受到关注，而 HEA 固有的缓慢扩散动力学限制了扩散控制的界面反应，使其难以建立稳固的冶金结合。本研究调查了铁钴铬镍锰 HEA 与商用 AZ31 的焊接情况，作为这一领域的先驱。在搅拌摩擦焊接过程中，通过在界面附近将亚微米级厚度（400-500 nm）的 HEA 原位加工成纳米晶结构，加速了扩散，从而观察到了界面相分离现象。在这种纳米晶-夹层中产生的大量晶界可作为扩散短路和能量优先成核点，从而促进 AZ31 中的铝扩散到 HEA 中，并引发快速分离为体心立方 AlNi- 型和四方 FeCr 型金属间化合物。因此，HEA 和 AZ31 通过这些界面金属间化合物实现了冶金结合。该接头在拉伸搭接剪切测试中显示出超强的强度，断裂主要发生在 AZ31 内部，而不是像以前常见的异种接头那样沿着界面断裂。
{"title":"Robust interfacial bonding achieved via phase separation induced by enhanced Al diffusion during AZ31/high-entropy alloy friction stir welding","authors":"Gaohui Li, Haining Yao, Boyuan Fu, Ke Chen, Katsuyoshi Kondoh, Nannan Chen, Min Wang","doi":"10.1016/j.jma.2024.09.010","DOIUrl":"https://doi.org/10.1016/j.jma.2024.09.010","url":null,"abstract":"Welding high-entropy alloy (HEA) to Mg alloy has gained increasing attention for multi-metal structure design, while intrinsic sluggish diffusion kinetics of HEA confines diffusion-controlled interfacial reactions and makes it challenging to establish robust metallurgical bonding. This study investigated welding of FeCoCrNiMn HEA to commercial AZ31 as a model combination to pioneer this field. Interfacial phase separation phenomenon was observed, with the diffusion accelerated by <em>in-situ</em> engineering a submicron-scale thick (∼400–500 nm) HEA nearby the interface into nanocrystalline-structure during friction stir welding. Abundant grain boundaries generated in this nanocrystalline-interlayer serve as diffusion short-circuits and energetically preferred nucleation-sites, which promoted Al in AZ31 to diffuse into HEA and triggered quick separation into body-centered cubic AlNi-type and tetragonal FeCr-type intermetallics. HEA and AZ31 were thus metallurgically bonded by these interfacial intermetallics. The joint shows exceptional strength in tensile lap-shear testing with fracture largely occurred within AZ31 rather than right along interface as commonly reported previously for dissimilar joints.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"75 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The laminated LA141 sheets were processed by the accumulative roll bonding (ARB). The interaction between dislocations and laminated interfaces, and the effect of bond interface spacing on the dynamic recrystallisation (DRX) behavior and mechanical properties were investigated. The results show that, with the increase of ARB cycles, physical metallurgical bonding is enhanced. MgLi2Al nanophases and fragmented MgO particles are formed at the bond interface during ARB process, which has a significant positive effect on the interface bonding. With the increase of ARB cycles, the bond interface spacing decreases, DRX mode changes from continuous dynamic recrystallization (CDRX) to geometrical dynamic recrystallization (GDRX), and the Zener-pinning effect is enhanced, which facilitates the grain refinement strengthening. The bond interface can not only effectively hinder the movement of dislocations causing strengthening, but also absorb, reflect and transmission the dislocations causing the improvement of the ductility. The final LA141 alloy possesses a tensile strength of 247 MPa and an elongation of 16.6 %, of which is 93.0 % and 70.3 % higher than the as-cast alloy, respectively.
{"title":"Balancing strength and ductility of LA141 alloy with a micro-nano laminated structure","authors":"Xiaoyan Feng, Huize Deng, Xiaochun Ma, Zhenzhao Yang, Hui Zhang, Zhe Yu, Wenbin Liu, Jun Wang, Legan Hou, Bingyu Qian, Jianfeng Sun, Ruizhi Wu","doi":"10.1016/j.jma.2024.09.012","DOIUrl":"https://doi.org/10.1016/j.jma.2024.09.012","url":null,"abstract":"The laminated LA141 sheets were processed by the accumulative roll bonding (ARB). The interaction between dislocations and laminated interfaces, and the effect of bond interface spacing on the dynamic recrystallisation (DRX) behavior and mechanical properties were investigated. The results show that, with the increase of ARB cycles, physical metallurgical bonding is enhanced. MgLi<sub>2</sub>Al nanophases and fragmented MgO particles are formed at the bond interface during ARB process, which has a significant positive effect on the interface bonding. With the increase of ARB cycles, the bond interface spacing decreases, DRX mode changes from continuous dynamic recrystallization (CDRX) to geometrical dynamic recrystallization (GDRX), and the Zener-pinning effect is enhanced, which facilitates the grain refinement strengthening. The bond interface can not only effectively hinder the movement of dislocations causing strengthening, but also absorb, reflect and transmission the dislocations causing the improvement of the ductility. The final LA141 alloy possesses a tensile strength of 247 MPa and an elongation of 16.6 %, of which is 93.0 % and 70.3 % higher than the as-cast alloy, respectively.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"70 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142439518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study examines the grain characteristics, dynamic precipitation phase characteristics, and texture evolution of Mg-Ga-xZn alloys produced through medium-high strain rate rolling. It investigates the impact of Zn on the mechanical and damping properties of Mg-Ga sheet. The addition of Zn reduces the solid solubility of Ga in α-Mg, facilitating dynamic precipitation, grain refinement, and weakening of the basal texture of the sheet, ultimately enhancing strength and damping performance. The yield strength of the sheet initially increases and then decreases with increasing Zn content. The Mg-5Ga-0.6 Zn alloy demonstrates the best overall mechanical properties, with a yield strength, tensile strength, and elongation of 221 MPa, 304 MPa, and 28.6%, respectively, primarily attributed to fine-grained strengthening. Damping performance at low strain amplitudes also follows a similar trend with increasing Zn content, with Mg-5Ga-0.6 Zn showing the highest damping values. The study suggests that the decrease in damping performance due to Zn can be linked to the reduced solid solubility of Ga in α-Mg. Specifically, at a strain amplitude of 1 × 10–3, the damping values Q-1 of Mg-5Ga, Mg-5Ga-0.6 Zn, and Mg-5Ga-1.2 Zn alloy sheets are 0.0167, 0.0152, and 0.0174, respectively. These findings have implications for the development of bio-implantable magnesium alloys with high damping properties.
{"title":"Microstructure, mechanical properties and damping behavior of novel Mg-Ga-Zn alloys fabricated by medium-high strain rate rolling","authors":"Wensen Huang, Jihua Chen, Hongge Yan, Weijun Xia, Fei Zhao","doi":"10.1016/j.jma.2024.09.009","DOIUrl":"https://doi.org/10.1016/j.jma.2024.09.009","url":null,"abstract":"This study examines the grain characteristics, dynamic precipitation phase characteristics, and texture evolution of Mg-Ga-xZn alloys produced through medium-high strain rate rolling. It investigates the impact of Zn on the mechanical and damping properties of Mg-Ga sheet. The addition of Zn reduces the solid solubility of Ga in α-Mg, facilitating dynamic precipitation, grain refinement, and weakening of the basal texture of the sheet, ultimately enhancing strength and damping performance. The yield strength of the sheet initially increases and then decreases with increasing Zn content. The Mg-5Ga-0.6 Zn alloy demonstrates the best overall mechanical properties, with a yield strength, tensile strength, and elongation of 221 MPa, 304 MPa, and 28.6%, respectively, primarily attributed to fine-grained strengthening. Damping performance at low strain amplitudes also follows a similar trend with increasing Zn content, with Mg-5Ga-0.6 Zn showing the highest damping values. The study suggests that the decrease in damping performance due to Zn can be linked to the reduced solid solubility of Ga in α-Mg. Specifically, at a strain amplitude of 1 × 10<sup>–3</sup>, the damping values <em>Q<sup>-1</sup></em> of Mg-5Ga, Mg-5Ga-0.6 Zn, and Mg-5Ga-1.2 Zn alloy sheets are 0.0167, 0.0152, and 0.0174, respectively. These findings have implications for the development of bio-implantable magnesium alloys with high damping properties.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"57 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142384920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-05DOI: 10.1016/j.jma.2024.09.006
Huai Wang, Soo Yeol Lee, You Sub Kim, Huamiao Wang, Wanchuck Woo, Ke An
The effects of solid solution on the deformation behavior of binary Mg–xZn (x = 0, 1, 2 wt%) alloys featuring a designated texture that enables extension twinning under tension parallel to the basal pole in most grains, were investigated using in-situ neutron diffraction and the EVPSC-TDT model. Neutron diffraction was used to quantitatively track grain-level lattice strains and diffraction intensity changes (related to mechanical twinning) in differently oriented grains of each alloy during cyclic tensile/compressive loadings. These measurements were accurately captured by the model. The stress-strain curves of Mg-1 wt%Zn and Mg-2 wt%Zn alloys show as-expected solid solution strengthening from the addition of Zn compared to pure Mg. The macroscopic yielding and hardening behaviors are explained by alternating slip and twinning modes as calculated by the model. The solid solution's influence on individual deformation modes, including basal 〈a〉 slip, prismatic 〈a〉 slip, and extension twinning, was then quantitatively assessed in terms of activity, yielding behavior, and hardening response by combining neutron diffraction results with crystal plasticity predictions. The Mg-1 wt%Zn alloy displays distinct yielding and hardening behavior due to solid solution softening of prismatic 〈a〉 slip. Additionally, the dependence of extension twinning, in terms of the twinning volume fraction, on Zn content exhibits opposite trends under tensile and compressive loadings.
{"title":"Solid solution dependence of the deformation behavior in Mg–xZn (x = 0, 1, 2 wt%) alloys: In-situ neutron diffraction and crystal plasticity modeling","authors":"Huai Wang, Soo Yeol Lee, You Sub Kim, Huamiao Wang, Wanchuck Woo, Ke An","doi":"10.1016/j.jma.2024.09.006","DOIUrl":"https://doi.org/10.1016/j.jma.2024.09.006","url":null,"abstract":"The effects of solid solution on the deformation behavior of binary Mg–<em>x</em>Zn (<em>x</em> = 0, 1, 2 wt%) alloys featuring a designated texture that enables extension twinning under tension parallel to the basal pole in most grains, were investigated using in-situ neutron diffraction and the EVPSC-TDT model. Neutron diffraction was used to quantitatively track grain-level lattice strains and diffraction intensity changes (related to mechanical twinning) in differently oriented grains of each alloy during cyclic tensile/compressive loadings. These measurements were accurately captured by the model. The stress-strain curves of Mg-1 wt%Zn and Mg-2 wt%Zn alloys show as-expected solid solution strengthening from the addition of Zn compared to pure Mg. The macroscopic yielding and hardening behaviors are explained by alternating slip and twinning modes as calculated by the model. The solid solution's influence on individual deformation modes, including basal 〈a〉 slip, prismatic 〈a〉 slip, and extension twinning, was then quantitatively assessed in terms of activity, yielding behavior, and hardening response by combining neutron diffraction results with crystal plasticity predictions. The Mg-1 wt%Zn alloy displays distinct yielding and hardening behavior due to solid solution softening of prismatic 〈a〉 slip. Additionally, the dependence of extension twinning, in terms of the twinning volume fraction, on Zn content exhibits opposite trends under tensile and compressive loadings.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"54 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142377491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the present work, the porous Ti particle reinforced Mg-based bulk metallic glass matrix composites (BMGCs) have been successfully fabricated via a novel in-situ dealloying method in metallic melt. A dual reinforcing structure, including large-scale between porous particles and fine-scale inside one particle, was induced to further overcome the strength-plasticity tradeoff. The microstructure and mechanical properties of such dual-scale structure-reinforced BMGCs with various volume fractions and diameters of porous Ti particles were investigated in detail. It is found that with more and finer porous Ti particles, the BMGC showed both high fracture strength (1131.9 ± 39.1 MPa) and good plastic deformability (1.48 ± 0.38 %). The characteristic of the reinforcing structure (0.48 µm) inside the porous particles was close to the plastic processing zone size of the matrix (0.1∼0.2 µm), which generated a locally ideal reinforcing structure. Such dual-scale reinforcing structures with more interfaces can effectively promote the multiplication of shear bands at the interfaces. Due to the size effect, the refined submicron matrix between the Ti ligaments inside the porous particles should exhibit homogeneous shearing events. Such delocalization behavior from the dual-scale reinforcing structures should help to enhance the role of the interactions between shear bands, thus improving the yield strength of the composites. Based on the in-situ dealloying method, the dual-scale structure design provides a novel approach to fabricate various BMGCs with both high strength and good plasticity.
本研究采用新颖的金属熔体原位脱合金方法，成功制备了多孔钛颗粒增强镁基块状金属玻璃基复合材料（BMGCs）。为了进一步克服强度与塑性之间的折衷，诱导出了双重增强结构，包括多孔颗粒之间的大尺度增强和颗粒内部的细尺度增强。研究人员详细考察了不同体积分数和直径的多孔 Ti 颗粒的双尺度结构增强 BMGC 的微观结构和力学性能。研究发现，当多孔 Ti 颗粒越多越细时，BMGC 的断裂强度越高（1131.9 ± 39.1 兆帕），塑性变形能力越好（1.48 ± 0.38 %）。多孔颗粒内部增强结构（0.48 µm）的特征与基体塑性加工区尺寸（0.1∼0.2 µm）接近，从而产生了局部理想的增强结构。这种界面较多的双尺度增强结构能有效促进界面处剪切带的倍增。由于尺寸效应，多孔颗粒内部钛韧带之间的细化亚微米基体应表现出均匀的剪切事件。双尺度增强结构的这种分散行为应有助于增强剪切带之间的相互作用，从而提高复合材料的屈服强度。基于原位脱合金方法，双尺度结构设计为制造具有高强度和良好塑性的各种 BMGC 提供了一种新方法。
{"title":"Development of in-situ porous Ti particle reinforced Mg-Cu-Gd metallic glass matrix composite with dual-scale reinforcing structures","authors":"Yuman Shao, Dijia Zhao, Wei Guo, Shulin Lü, Jincheng Wang, Shusen Wu","doi":"10.1016/j.jma.2024.09.003","DOIUrl":"https://doi.org/10.1016/j.jma.2024.09.003","url":null,"abstract":"In the present work, the porous Ti particle reinforced Mg-based bulk metallic glass matrix composites (BMGCs) have been successfully fabricated via a novel <em>in-situ</em> dealloying method in metallic melt. A dual reinforcing structure, including large-scale between porous particles and fine-scale inside one particle, was induced to further overcome the strength-plasticity tradeoff. The microstructure and mechanical properties of such dual-scale structure-reinforced BMGCs with various volume fractions and diameters of porous Ti particles were investigated in detail. It is found that with more and finer porous Ti particles, the BMGC showed both high fracture strength (1131.9 ± 39.1 MPa) and good plastic deformability (1.48 ± 0.38 %). The characteristic of the reinforcing structure (0.48 µm) inside the porous particles was close to the plastic processing zone size of the matrix (0.1∼0.2 µm), which generated a locally ideal reinforcing structure. Such dual-scale reinforcing structures with more interfaces can effectively promote the multiplication of shear bands at the interfaces. Due to the size effect, the refined submicron matrix between the Ti ligaments inside the porous particles should exhibit homogeneous shearing events. Such delocalization behavior from the dual-scale reinforcing structures should help to enhance the role of the interactions between shear bands, thus improving the yield strength of the composites. Based on the <em>in-situ</em> dealloying method, the dual-scale structure design provides a novel approach to fabricate various BMGCs with both high strength and good plasticity.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"2 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142363263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Magnesium (Mg) is renowned for its unique combination of low weight, high strength-to-weight ratio, biocompatibility, and natural abundance, positioning it as an ideal candidate for biodegradable implants in biomedicine. Despite these advantageous properties, challenges such as poor formability and susceptibility to corrosion have restricted its broader application. This review critically addresses these limitations by delving into Mg's biodegradation mechanisms and the various degradation modes activated by different physiological environments. Emphasis is placed on understanding these processes to optimize Mg's utility as a biomaterial. Additionally, the transformative potential of integrating rare-earth (RE) elements into Mg alloys is explored. These elements significantly refine the microstructure, enhance mechanical properties, and improve corrosion resistance, effectively mitigating some of Mg's inherent limitations. Rare earth elements (REEs) significantly improve the mechanical properties of magnesium alloys. Cerium and lanthanum form protective oxide layers, reducing corrosion. Neodymium prevents hydrogen embrittlement, while yttrium refines grain size. The combination of REEs offers a diverse range of properties, including enhanced strength, creep resistance, high-temperature performance, corrosion resistance, ductility, and toughness. This versatility allows for tailored alloy selection for specific applications. The review also assesses the effects of various RE elements on biodegradability, cytotoxicity, and biological interaction, which are crucial for medical applications. Furthermore, the innovative realm of additive manufacturing (AM) is investigated to develop efficient Mg-RE-based biomedical implants, enabling the precise customization of implants to meet individual patient needs. Through a comprehensive evaluation of the latest research, this study projects the promising future of Mg-RE alloys as groundbreaking biomaterials poised to redefine medical implant technology with their superior mechanical and biological properties.
镁（Mg）以其独特的低重量、高强度重量比、生物相容性和天然丰富性而闻名，是生物医学中可生物降解植入物的理想候选材料。尽管具有这些优势特性，但成型性差和易腐蚀等挑战限制了其更广泛的应用。本综述通过深入研究镁的生物降解机制以及不同生理环境激活的各种降解模式，批判性地探讨了这些局限性。重点在于了解这些过程，以优化镁作为生物材料的用途。此外，还探讨了将稀土元素融入镁合金的变革潜力。这些元素可极大地改善微观结构、提高机械性能和耐腐蚀性，从而有效缓解镁的一些固有局限性。稀土元素（REEs）能显著改善镁合金的机械性能。铈和镧可形成保护性氧化层，减少腐蚀。钕能防止氢脆，而钇则能细化晶粒尺寸。各种稀土元素的组合具有多种特性，包括更高的强度、抗蠕变性、高温性能、耐腐蚀性、延展性和韧性。这种多功能性允许为特定应用选择量身定制的合金。本综述还评估了各种 RE 元素对生物降解性、细胞毒性和生物相互作用的影响，这些对医疗应用至关重要。此外，还对增材制造（AM）的创新领域进行了研究，以开发基于镁-RE 的高效生物医学植入物，从而实现植入物的精确定制，满足患者的个性化需求。通过对最新研究的全面评估，本研究预测了 Mg-RE 合金作为突破性生物材料的美好前景，其卓越的机械和生物特性将重新定义医疗植入技术。
{"title":"Rare-Earth based magnesium alloys as a potential biomaterial for the future","authors":"Abhishek Kumar , Amit Choudhari , Ashish Kumar Gupta , Avinash Kumar","doi":"10.1016/j.jma.2024.10.006","DOIUrl":"10.1016/j.jma.2024.10.006","url":null,"abstract":"<div><div>Magnesium (Mg) is renowned for its unique combination of low weight, high strength-to-weight ratio, biocompatibility, and natural abundance, positioning it as an ideal candidate for biodegradable implants in biomedicine. Despite these advantageous properties, challenges such as poor formability and susceptibility to corrosion have restricted its broader application. This review critically addresses these limitations by delving into Mg's biodegradation mechanisms and the various degradation modes activated by different physiological environments. Emphasis is placed on understanding these processes to optimize Mg's utility as a biomaterial. Additionally, the transformative potential of integrating rare-earth (RE) elements into Mg alloys is explored. These elements significantly refine the microstructure, enhance mechanical properties, and improve corrosion resistance, effectively mitigating some of Mg's inherent limitations. Rare earth elements (REEs) significantly improve the mechanical properties of magnesium alloys. Cerium and lanthanum form protective oxide layers, reducing corrosion. Neodymium prevents hydrogen embrittlement, while yttrium refines grain size. The combination of REEs offers a diverse range of properties, including enhanced strength, creep resistance, high-temperature performance, corrosion resistance, ductility, and toughness. This versatility allows for tailored alloy selection for specific applications. The review also assesses the effects of various RE elements on biodegradability, cytotoxicity, and biological interaction, which are crucial for medical applications. Furthermore, the innovative realm of additive manufacturing (AM) is investigated to develop efficient Mg-RE-based biomedical implants, enabling the precise customization of implants to meet individual patient needs. Through a comprehensive evaluation of the latest research, this study projects the promising future of Mg-RE alloys as groundbreaking biomaterials poised to redefine medical implant technology with their superior mechanical and biological properties.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"12 10","pages":"Pages 3841-3897"},"PeriodicalIF":15.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-01DOI: 10.1016/j.jma.2024.07.009
Zhipeng Wang , Zhao Shen , Yang Liu , Yahuan Zhao , Qingchun Zhu , Yiwen Chen , Jingya Wang , Yangxin Li , Sergio Lozano-Perez , Xiaoqin Zeng
In this study, we investigated the oxidation of the Mg-11Y-1Al alloy at 500 °C in an Ar-20%O2 environment. Multiscale analysis showed the network-like long-period stacking ordered (LPSO) phase transformed into needle-like LPSO and polygonal Mg24Y5 phases, leading to the formation of a high-dense network of needle-like oxides at the oxidation front. These oxides grew laterally along the oxide/matrix interfaces, forming a thicker, continuous scale that effectively blocked elemental diffusion. Hence, the preferential oxidation along the needle-like LPSO is believed to accelerate the formation of a thicker and continuous oxide scale, further improving the oxidation resistance of the Mg-11Y-1Al alloy.
{"title":"The effect of LPSO phase on the high-temperature oxidation of a stainless Mg-Y-Al alloy","authors":"Zhipeng Wang , Zhao Shen , Yang Liu , Yahuan Zhao , Qingchun Zhu , Yiwen Chen , Jingya Wang , Yangxin Li , Sergio Lozano-Perez , Xiaoqin Zeng","doi":"10.1016/j.jma.2024.07.009","DOIUrl":"10.1016/j.jma.2024.07.009","url":null,"abstract":"<div><div>In this study, we investigated the oxidation of the Mg-11Y-1Al alloy at 500 °C in an Ar-20%O<sub>2</sub> environment. Multiscale analysis showed the network-like long-period stacking ordered (LPSO) phase transformed into needle-like LPSO and polygonal Mg<sub>24</sub>Y<sub>5</sub> phases, leading to the formation of a high-dense network of needle-like oxides at the oxidation front. These oxides grew laterally along the oxide/matrix interfaces, forming a thicker, continuous scale that effectively blocked elemental diffusion. Hence, the preferential oxidation along the needle-like LPSO is believed to accelerate the formation of a thicker and continuous oxide scale, further improving the oxidation resistance of the Mg-11Y-1Al alloy.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"12 10","pages":"Pages 4045-4052"},"PeriodicalIF":15.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-01DOI: 10.1016/j.jma.2023.06.010
Bingjie Ma , Liuzhang Ouyang , Jie Zheng
Magnesium alloys are light structural materials and promising anode candidates for Mg-air batteries. However, application of Mg-air batteries is limited by poor performance at large current density and severe H2 generation side reactions. In this study, we pioneered magnesium-rare earth Mg3RE (RE=La, Ce, Pr and Nd) intermetallic compounds as anodes to provide higher power density and more stable discharge performance. Especially, Mg3Pr alloy exhibits high discharge voltage of 0.91 V and peak power density of 54.4 mW cm−2 at 60 mA cm−2 with anodic efficiency of 60%, far better than other Mg alloys. We reveal an activation mechanism of Mg3RE-based anodes during discharge, which significantly accelerates mass transfer process as well as enhances discharge activity. The results improve the performance of high-power Mg-air batteries and promote the value-added application of abundant rare earth elements such as Ce and La.
{"title":"Magnesium-rare earth intermetallic compounds for high performance high power aqueous Magnesium-Air batteries","authors":"Bingjie Ma , Liuzhang Ouyang , Jie Zheng","doi":"10.1016/j.jma.2023.06.010","DOIUrl":"10.1016/j.jma.2023.06.010","url":null,"abstract":"<div><div>Magnesium alloys are light structural materials and promising anode candidates for Mg-air batteries. However, application of Mg-air batteries is limited by poor performance at large current density and severe H<sub>2</sub> generation side reactions. In this study, we pioneered magnesium-rare earth Mg<sub>3</sub>RE (RE=La, Ce, Pr and Nd) intermetallic compounds as anodes to provide higher power density and more stable discharge performance. Especially, Mg<sub>3</sub>Pr alloy exhibits high discharge voltage of 0.91 V and peak power density of 54.4 mW cm<sup>−2</sup> at 60 mA cm<sup>−2</sup> with anodic efficiency of 60%, far better than other Mg alloys. We reveal an activation mechanism of Mg<sub>3</sub>RE-based anodes during discharge, which significantly accelerates mass transfer process as well as enhances discharge activity. The results improve the performance of high-power Mg-air batteries and promote the value-added application of abundant rare earth elements such as Ce and La.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"12 10","pages":"Pages 4191-4204"},"PeriodicalIF":15.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46342042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-01DOI: 10.1016/j.jma.2023.06.009
Q.H. Wang , S.S. Liang , F.S. Yuan , B.Y. Liu , J.Z. Yu , W. Wang , N. Fakhar , H.X. Li
Minimally invasive surgery (MIS) robots, such as single-arm stapling robots, are key to oral and maxillofacial surgery because they overcome space constraints in the oral cavity and deep throat. However, biodegradable suture staples should be developed for the single-arm stapling robots to avoid a secondary operation. For this aim, a new type of Mg-3Zn-0.2Ca-2Ag biodegradable alloy wire was developed in this study applied as suture staples. Its tensile strength, yield strength, and elongation are 326.1 MPa, 314.5 MPa, and 19.6%, respectively. Especially, the alloy wire attains the highest yield strength value reported among all the biodegradable Mg wires, which is mainly attributed to fine grain strengthening and second phase strengthening such as Mg2Zn11 nano phase strengthening. Moreover, the corrosion rate of this alloy wire in simulated body fluid (SBF) reaches 26.8 mm/y, the highest value among all the biodegradable Mg alloy wires reported so far, which is mainly from the intensified galvanic corrosion between the Ag17Mg54 phase and the Mg matrix. In vitro studies demonstrate that the alloy wire exhibits good blood compatibility and low cytotoxicity. The cone beam computed tomography (CBCT) data shows that the suture staple made of the Mg alloy wire provides better mechanical support in the early postoperative period. From the single arm robot tests, it confirms that suture staples can close the wound tightly and remain stable over time. This research provides a good material selection for the automated suturing in oral and throat surgery robots.
{"title":"A high-performance degradable Mg alloy suturing staple for single-arm oral stapling robot","authors":"Q.H. Wang , S.S. Liang , F.S. Yuan , B.Y. Liu , J.Z. Yu , W. Wang , N. Fakhar , H.X. Li","doi":"10.1016/j.jma.2023.06.009","DOIUrl":"10.1016/j.jma.2023.06.009","url":null,"abstract":"<div><div>Minimally invasive surgery (MIS) robots, such as single-arm stapling robots, are key to oral and maxillofacial surgery because they overcome space constraints in the oral cavity and deep throat. However, biodegradable suture staples should be developed for the single-arm stapling robots to avoid a secondary operation. For this aim, a new type of Mg-3Zn-0.2Ca-2Ag biodegradable alloy wire was developed in this study applied as suture staples. Its tensile strength, yield strength, and elongation are 326.1 MPa, 314.5 MPa, and 19.6%, respectively. Especially, the alloy wire attains the highest yield strength value reported among all the biodegradable Mg wires, which is mainly attributed to fine grain strengthening and second phase strengthening such as Mg<sub>2</sub>Zn<sub>11</sub> nano phase strengthening. Moreover, the corrosion rate of this alloy wire in simulated body fluid (SBF) reaches 26.8 mm/y, the highest value among all the biodegradable Mg alloy wires reported so far, which is mainly from the intensified galvanic corrosion between the Ag<sub>17</sub>Mg<sub>54</sub> phase and the Mg matrix. <em>In vitro</em> studies demonstrate that the alloy wire exhibits good blood compatibility and low cytotoxicity. The cone beam computed tomography (CBCT) data shows that the suture staple made of the Mg alloy wire provides better mechanical support in the early postoperative period. From the single arm robot tests, it confirms that suture staples can close the wound tightly and remain stable over time. This research provides a good material selection for the automated suturing in oral and throat surgery robots.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"12 10","pages":"Pages 4096-4118"},"PeriodicalIF":15.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48798217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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