Pub Date : 2025-12-19DOI: 10.1016/j.jmst.2025.12.027
Y.D. Wang, F.C. Liu, Z.Y. Liu, P. Xue, L.H. Wu, H. Zhang, Z. Zhang, D.R. Ni, B.L. Xiao, Z.Y. Ma
{"title":"Microstructure evolution in aluminum matrix nanocomposites and aluminum alloys throughout whole process of additive friction extrusion deposition","authors":"Y.D. Wang, F.C. Liu, Z.Y. Liu, P. Xue, L.H. Wu, H. Zhang, Z. Zhang, D.R. Ni, B.L. Xiao, Z.Y. Ma","doi":"10.1016/j.jmst.2025.12.027","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.027","url":null,"abstract":"","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"18 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145784590","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 : 2025-12-19DOI: 10.1016/j.jmst.2025.12.025
Xing Zhang, Lei Zhou, Jun Yang, Junjie Li, Mu Lan, Yilei Li, Zitao Shi, Wenjuan Wu, Bin Tang, Hongyu Yang, Lezhong Li
{"title":"Revealing loss mechanisms through interpretable machine learning and accelerated discovery of ultra-low-loss dielectric ceramics in the Li2TiO3-Li3NbO4-MgO system","authors":"Xing Zhang, Lei Zhou, Jun Yang, Junjie Li, Mu Lan, Yilei Li, Zitao Shi, Wenjuan Wu, Bin Tang, Hongyu Yang, Lezhong Li","doi":"10.1016/j.jmst.2025.12.025","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.025","url":null,"abstract":"","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"26 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145784593","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}
Ni-based wrought superalloys exhibit pronounced temperature-dependent plasticity fluctuations, particularly manifesting as a plasticity trough within their service temperature range. This phenomenon critically impacts alloy design and performance reliability. While prior studies have established grain boundary (GB) crack initiation as a key driver of plasticity loss, the temperature-dependent GB deformation response remains poorly understood. To address this gap, in situ tensile testing coupled with advanced microscopy was conducted at room temperature, 750°C, and 950°C, incorporating grain size and environmental atmosphere effects. At 750°C, GB crack nucleation is governed by slip system misalignment (quantified via the Luster-Morris factor, m′), with low m′ GBs acting as preferential crack initiation sites. The vacuum environment suppresses the surface GB oxidation behavior, which helps to maintain the stability of necking behavior and improve intermediate temperature plasticity. Plasticity recovery at 950°C correlates with dynamic recrystallization mechanisms, where local lattice rotation near GBs facilitates strain accommodation. Furthermore, coarse-grained structures exhibit inferior intermediate-temperature plasticity compared to fine-grained counterparts due to reduced crack propagation resistance and slip-plane intersection-induced cleavage failure. These findings provide valuable insights for optimizing GB design to mitigate plasticity fluctuations, enhancing the reliability of Ni-based superalloys in high-temperature applications.
{"title":"Temperature-driven plasticity fluctuations mechanism and grain boundary deformation response of Ni-based wrought superalloy","authors":"Yingbo Bai, Rui Zhang, Chuanyong Cui, Zijian Zhou, Xipeng Tao, Yizhou Zhou","doi":"10.1016/j.jmst.2025.12.024","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.024","url":null,"abstract":"Ni-based wrought superalloys exhibit pronounced temperature-dependent plasticity fluctuations, particularly manifesting as a plasticity trough within their service temperature range. This phenomenon critically impacts alloy design and performance reliability. While prior studies have established grain boundary (GB) crack initiation as a key driver of plasticity loss, the temperature-dependent GB deformation response remains poorly understood. To address this gap, in situ tensile testing coupled with advanced microscopy was conducted at room temperature, 750°C, and 950°C, incorporating grain size and environmental atmosphere effects. At 750°C, GB crack nucleation is governed by slip system misalignment (quantified via the Luster-Morris factor, <em>m</em>′), with low <em>m</em>′ GBs acting as preferential crack initiation sites. The vacuum environment suppresses the surface GB oxidation behavior, which helps to maintain the stability of necking behavior and improve intermediate temperature plasticity. Plasticity recovery at 950°C correlates with dynamic recrystallization mechanisms, where local lattice rotation near GBs facilitates strain accommodation. Furthermore, coarse-grained structures exhibit inferior intermediate-temperature plasticity compared to fine-grained counterparts due to reduced crack propagation resistance and slip-plane intersection-induced cleavage failure. These findings provide valuable insights for optimizing GB design to mitigate plasticity fluctuations, enhancing the reliability of Ni-based superalloys in high-temperature applications.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"1 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145771326","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}
Mg-Ca alloys are very promising materials for orthopedic applications owing to the beneficial role of Ca in promoting bone formation. However, they are susceptible to corrosion, especially for the localized corrosion caused by the presence of coarse Mg2Ca second phase. Here, single-phased Mg-Ca alloys fabricated through a unique high-pressure heat treatment were proposed to solve the issue. Through a proper high-pressure solid solution (HPSS) treatment, the maximum solubility of Ca in Mg can be improved to 1 wt.% under the pressure of 4 GPa and above the temperature of 750°C, which can’t be achieved through traditional solid solution treatment. Compared to the untreated ones, galvanic corrosion between different phases (Mg and Mg2Ca) was basically avoided in the Ca supersaturated Mg-1Ca alloy (single-phased). Along with corrosion, a high content of Ca released from the matrix tended to redeposit at the corroded surface and combined with O, P, and C, forming an intact Ca/P/O/C-rich layer, which mainly consisted of CaCO3, Ca3(PO4)2, and Ca(OH)2. The rapid formation of this intact layer provided an extra shielding effect for the beneath matrix, thus significantly improving corrosion resistance and biocompatibility. On the whole, a uniform corrosion mode was achieved with a 16-fold reduction in corrosion rate, from 1.83 mm/year in bi-phased ones to 0.11 mm/year in single-phased ones. This work provides a feasible approach to fabricate single-phased alloys containing alloying elements with no or limited solid solubility, pursuing better corrosion and biocompatibility performances.
{"title":"Single-phased Mg-Ca alloys fabricated via high-pressure heat treatment for better biodegradability and biocompatibility","authors":"Qinggong Jia, Zhipei Tong, Qianying Jia, He Huang, Shijie Zhu, Zhuangfei Zhang, Yoji Mine, Kazuki Takashima, Shaokang Guan, Dong Bian, Yufeng Zheng","doi":"10.1016/j.jmst.2025.12.022","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.022","url":null,"abstract":"Mg-Ca alloys are very promising materials for orthopedic applications owing to the beneficial role of Ca in promoting bone formation. However, they are susceptible to corrosion, especially for the localized corrosion caused by the presence of coarse Mg<sub>2</sub>Ca second phase. Here, single-phased Mg-Ca alloys fabricated through a unique high-pressure heat treatment were proposed to solve the issue. Through a proper high-pressure solid solution (HPSS) treatment, the maximum solubility of Ca in Mg can be improved to 1 wt.% under the pressure of 4 GPa and above the temperature of 750°C, which can’t be achieved through traditional solid solution treatment. Compared to the untreated ones, galvanic corrosion between different phases (Mg and Mg<sub>2</sub>Ca) was basically avoided in the Ca supersaturated Mg-1Ca alloy (single-phased). Along with corrosion, a high content of Ca released from the matrix tended to redeposit at the corroded surface and combined with O, P, and C, forming an intact Ca/P/O/C-rich layer, which mainly consisted of CaCO<sub>3</sub>, Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>, and Ca(OH)<sub>2</sub>. The rapid formation of this intact layer provided an extra shielding effect for the beneath matrix, thus significantly improving corrosion resistance and biocompatibility. On the whole, a uniform corrosion mode was achieved with a 16-fold reduction in corrosion rate, from 1.83 mm/year in bi-phased ones to 0.11 mm/year in single-phased ones. This work provides a feasible approach to fabricate single-phased alloys containing alloying elements with no or limited solid solubility, pursuing better corrosion and biocompatibility performances.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"153 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145771327","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 : 2025-12-17DOI: 10.1016/j.jmst.2025.12.018
Xuan Li, Yixuan Shi, Chengcong Huang, Shangyan Zhao, Yuzhi Wu, Yifan Song, Zhao Yang, Yiyang Sun, Ruiyang Cui, Yongheng Ren, Ping Li, Holger Jahr, Jun Cheng, Yageng Li, Luning Wang
Zinc (Zn), an essential trace element in the human body, holds significant promise as a biodegradable material for orthopedic implants due to its suitable degradation rate and excellent biocompatibility. However, conventional manufacturing methods face challenges in producing implants with complex geometries, and laser powder bed fusion (LPBF) of pure Zn suffers from issues such as volatility of the liquid phase and high residual stresses. This study presents the first exploration of binder jet (BJ) additive manufacturing for the fabrication of pure Zn scaffolds. Green parts were formed via inkjet deposition onto a powder bed and subsequently densified through curing, debinding, and sintering. The resulting BJ Zn specimens exhibited promising mechanical properties, a rapid in vitro degradation rate, and good cytocompatibility. Specifically, the scaffolds achieved a densification of 75.23%, compressive strength of 43.09 MPa, and Young’s modulus of 2146.23 MPa-values that closely approximate the mechanical characteristics of cancellous bone. Additionally, the BJ Zn specimen exhibited a significantly higher degradation rate than the LPBF Zn specimen, while cytocompatibility tests using 10% diluted extracts revealed excellent biocompatibility. Furthermore, we demonstrated the feasibility of BJ for fabricating customized Zn implants tailored for bone defect repair, including orthopedic screws, bone plates, and porous scaffolds, highlighting its suitability for patient-specific bone defect repair. Collectively, these findings represent a significant advancement in the development of BJ additive manufacturing for biodegradable Zn implants and demonstrate the strong potential of Zn-based scaffolds for applications in bone tissue engineering.
{"title":"Binder jet additive manufacturing of pure Zn scaffold","authors":"Xuan Li, Yixuan Shi, Chengcong Huang, Shangyan Zhao, Yuzhi Wu, Yifan Song, Zhao Yang, Yiyang Sun, Ruiyang Cui, Yongheng Ren, Ping Li, Holger Jahr, Jun Cheng, Yageng Li, Luning Wang","doi":"10.1016/j.jmst.2025.12.018","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.12.018","url":null,"abstract":"Zinc (Zn), an essential trace element in the human body, holds significant promise as a biodegradable material for orthopedic implants due to its suitable degradation rate and excellent biocompatibility. However, conventional manufacturing methods face challenges in producing implants with complex geometries, and laser powder bed fusion (LPBF) of pure Zn suffers from issues such as volatility of the liquid phase and high residual stresses. This study presents the first exploration of binder jet (BJ) additive manufacturing for the fabrication of pure Zn scaffolds. Green parts were formed via inkjet deposition onto a powder bed and subsequently densified through curing, debinding, and sintering. The resulting BJ Zn specimens exhibited promising mechanical properties, a rapid <em>in vitro</em> degradation rate, and good cytocompatibility. Specifically, the scaffolds achieved a densification of 75.23%, compressive strength of 43.09 MPa, and Young’s modulus of 2146.23 MPa-values that closely approximate the mechanical characteristics of cancellous bone. Additionally, the BJ Zn specimen exhibited a significantly higher degradation rate than the LPBF Zn specimen, while cytocompatibility tests using 10% diluted extracts revealed excellent biocompatibility. Furthermore, we demonstrated the feasibility of BJ for fabricating customized Zn implants tailored for bone defect repair, including orthopedic screws, bone plates, and porous scaffolds, highlighting its suitability for patient-specific bone defect repair. Collectively, these findings represent a significant advancement in the development of BJ additive manufacturing for biodegradable Zn implants and demonstrate the strong potential of Zn-based scaffolds for applications in bone tissue engineering.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"591 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145771366","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}
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