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NIR/TME-responsive release of zoledronic acid-loaded LDHs on ZE21C magnesium alloy with multi-therapy for osteosarcoma 载唑来膦酸LDHs在ZE21C镁合金上的NIR/ tme响应释放与骨肉瘤的多重治疗
IF 17.6 1区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING Pub Date : 2026-01-16 DOI: 10.1016/j.jma.2025.101975
Dong Li, Tong Zhang, Shaosheng Jia, Jianan Yu, Rongbang Sun, Bin Yin, Liguo Wang, Lingchuang Bai, Lan Chen, Shaokang Guan
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引用次数: 0
Synergistic improvement of corrosion-strength of Mg-Zn-Ca-Sn dilute alloys by adjusting the Sn/Ca atomic ratio 通过调整Sn/Ca原子比协同提高Mg-Zn-Ca-Sn稀合金的腐蚀强度
IF 17.6 1区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING Pub Date : 2026-01-03 DOI: 10.1016/j.jma.2025.10.003
Yun Feng, Muhammad Abubaker Khan, Han Wang, Didi Zhao, Shang Dai, Jingyuan Li
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引用次数: 0
Overcoming geometric embrittlement in Mg–Li foils through grain refinement and grain-boundary–mediated deformation 通过晶粒细化和晶界介导变形克服镁锂箔的几何脆化
IF 17.6 1区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING Pub Date : 2025-12-16 DOI: 10.1016/j.jma.2025.11.013
Hee-Tae Jeong, Woo Jin Kim
Ultrathin metallic foils deform under plane-stress conditions, where the absence of through-thickness constraint and a low thickness-to-grain-size ratio (t/d) promote early necking and severely limit uniform elongation. Here, we demonstrate that high-ratio differential speed rolling (HRDSR) mitigates these geometric limitations in Mg–10Li alloy foils by refining grains to the nearly ultrafine regime, thereby increasing t/d and activating grain-boundary–mediated deformation. Foils 100 μm thick with grain sizes of 1.1 μm (t/d ≈ 91) exhibit elongations exceeding 30 % at 10−5 s−1, whereas coarse-grained counterparts (29.4 μm, t/d ≈ 3.4) of the same thickness fail abruptly with < 1 % uniform strain under identical conditions. Micro-pattern formability tests confirm homogeneous deformation and high surface fidelity in ultrafine-grained foils, in sharp contrast to severe strain localization and pattern collapse in coarse-grained samples. Strain-rate jump tests on the ultrafine-grained foils reveal an elevated strain-rate sensitivity (m ≈ 0.23) and low activation volumes (15–30 b3) at low strain-rates, suggesting that deformation is governed by a combined contribution of grain boundary sliding (GBS) and dislocation climb creep (DCC). A unified constitutive framework captures the transition from DCC at moderate strain-rates to GBS at low rates. The present findings demonstrate that refining Mg–Li alloys to a quasi-ultrafine-grained regime effectively overcomes the intrinsic ductility limitations imposed by plane-stress geometry, thereby enabling their practical application in flexible electronics, bioresorbable implants, and lightweight energy-storage systems.
超薄金属箔在平面应力条件下变形,其中缺乏通厚约束和较低的厚度与晶粒尺寸比(t/d)促进了早期颈缩,严重限制了均匀伸长。在这里,我们证明了高比差速轧制(HRDSR)通过将晶粒细化到接近超细的状态来减轻Mg-10Li合金箔的这些几何限制,从而增加了t/d并激活了晶界介导的变形。100 μm厚、晶粒尺寸为1.1 μm (t/d≈91)的箔片在10−5 s−1时的伸长率超过30%,而相同厚度的粗晶箔片(29.4 μm, t/d≈3.4)在相同的条件下,在<; 1 %的均匀应变下突然失效。微观图案成形性测试证实了超细晶箔的均匀变形和高表面保真度,与粗晶样品的严重应变局部化和图案坍塌形成鲜明对比。对超细晶箔的应变速率跳变试验表明,在低应变速率下,超细晶箔具有较高的应变速率敏感性(m≈0.23)和较低的激活体积(15-30 b3),表明变形是由晶界滑动(GBS)和位错爬升蠕变(DCC)共同作用的结果。统一的本构框架捕获了从中等应变率的DCC到低应变率的GBS的过渡。目前的研究结果表明,将Mg-Li合金细化到准超细晶态有效地克服了平面应力几何形状所施加的固有延展性限制,从而使其在柔性电子、生物可吸收植入物和轻质储能系统中的实际应用成为可能。
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引用次数: 0
Interactions between a migrating {101¯1} twin boundary and a 〈 c 〉 or 〈 c + a 〉 dislocation in magnesium 迁移{101¯1}孪晶界与镁中< c >或< c + >位错的相互作用
IF 17.6 1区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING Pub Date : 2025-12-13 DOI: 10.1016/j.jma.2025.11.015
Y. Yue, H.Y. Song, Jian Wang, J.F. Nie
We conducted molecular dynamics simulations to study the interactions between a migrating <span><span style=""></span><span data-mathml='<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow is="true"><mo is="true">{</mo><mrow is="true"><mn is="true">10</mn><mover accent="true" is="true"><mn is="true">1</mn><mo is="true">&#xAF;</mo></mover><mn is="true">1</mn></mrow><mo is="true">}</mo></mrow></math>' role="presentation" style="font-size: 90%; display: inline-block; position: relative;" tabindex="0"><svg aria-hidden="true" focusable="false" height="2.779ex" role="img" style="vertical-align: -0.812ex;" viewbox="0 -846.5 3073 1196.3" width="7.137ex" xmlns:xlink="http://www.w3.org/1999/xlink"><g fill="currentColor" stroke="currentColor" stroke-width="0" transform="matrix(1 0 0 -1 0 0)"><g is="true"><use is="true" xlink:href="#MJMAIN-7B"></use><g is="true" transform="translate(500,0)"><g is="true"><use xlink:href="#MJMAIN-31"></use><use x="500" xlink:href="#MJMAIN-30" y="0"></use></g><g is="true" transform="translate(1001,0)"><g is="true" transform="translate(35,0)"><use xlink:href="#MJMAIN-31"></use></g><g is="true" transform="translate(0,198)"><use x="-70" xlink:href="#MJMAIN-AF" y="0"></use><use x="70" xlink:href="#MJMAIN-AF" y="0"></use></g></g><g is="true" transform="translate(1571,0)"><use xlink:href="#MJMAIN-31"></use></g></g><use is="true" x="2572" xlink:href="#MJMAIN-7D" y="0"></use></g></g></svg><span role="presentation"><math xmlns="http://www.w3.org/1998/Math/MathML"><mrow is="true"><mo is="true">{</mo><mrow is="true"><mn is="true">10</mn><mover accent="true" is="true"><mn is="true">1</mn><mo is="true">¯</mo></mover><mn is="true">1</mn></mrow><mo is="true">}</mo></mrow></math></span></span><script type="math/mml"><math><mrow is="true"><mo is="true">{</mo><mrow is="true"><mn is="true">10</mn><mover accent="true" is="true"><mn is="true">1</mn><mo is="true">¯</mo></mover><mn is="true">1</mn></mrow><mo is="true">}</mo></mrow></math></script></span> twin boundary (TB) and prismatic 〈 <em>c</em> 〉 and 〈 <em>c</em> <em>+</em> <em>a</em> 〉 dislocations in magnesium. In the simulations, the 〈 <em>c</em> <em>+</em> <em>a</em> 〉 dislocation comprises 〈 <em>c</em> 〉 edge and 〈 <em>a</em> 〉 screw components. Both of these 〈 <em>c</em> 〉 and 〈 <em>c</em> <em>+</em> <em>a</em> 〉 dislocations are observed to exhibit a dissociated core comprising two partial dislocations. Upon interaction with a <span><span style=""></span><span data-mathml='<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow is="true"><mo is="true">(</mo><mrow is="true"><mn is="true">10</mn><mover accent="true" is="true"><mn is="true">1</mn><mo is="true">&#xAF;</mo></mover><mn is="true">1</mn></mrow><mo is="true">)</mo></mrow></math>' role=
我们通过分子动力学模拟研究了迁移{101¯1}{101¯1}孪晶界(TB)与镁中棱柱形< c >和< c + a >位错之间的相互作用。在模拟中,< c + a >位错由< c >边和< a >螺杆组成。这两种< c >和< c + a >位错都被观察到表现出由两个部分位错组成的解离核心。在与(101¯1)(101¯1)TB相互作用时,这些部分固定TB并驻留在金字塔-基底(PyB)或基底-金字塔(BPy)孪生界面上。结果发现,在(101¯1)(101¯1)孪晶内部,其中一个偏位转变为基底< a >位错,另一个偏位转变为孪晶内部的Frank偏位错,并与TB上的单原子层高度断裂相连接。基底< a >位错有其延伸的核心,由两个肖克利部分位错包围。模拟结果表明,当90°Shockley位错靠近TB时,完整的< a >位错容易分离。相反,当30°Shockley靠近TB时,< a >与TB连接,并与TB同步迁移。观察到,< a >与(101¯1)(101¯1)TB的连接导致了包含I2故障的结构,其一端通过30°Shockley部分位错与TB上的两原子层高度断开连接。进一步研究表明,当连接I2的剪切方向指向TB时,这种双原子层高断裂的立管面平行于PyB界面,而当连接I2的剪切方向远离TB时,其立管面平行于BPy界面。
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引用次数: 0
Harnessing the power of α-Mg: Unveiling the matrix phase’s role in Mg alloys from structure to function 利用α-Mg的力量:揭示基体相在镁合金中从结构到功能的作用
IF 17.6 1区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING Pub Date : 2025-12-13 DOI: 10.1016/j.jma.2025.11.008
Xun Chen, Yuan Yuan, Xiwei Zhou, Tao Chen, Aitao Tang, Xianhua Chen, Jun Tan, Nele Moelans, Jürgen Eckert, Fusheng Pan
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引用次数: 0
The influence of RE elements on the performance of laser welded joints of magnesium alloys: A review 稀土元素对镁合金激光焊接接头性能的影响
IF 17.6 1区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING Pub Date : 2025-12-12 DOI: 10.1016/j.jma.2025.11.009
Lingxiao Wang, Xiaoya Chen, Quanan Li, Zheng Wu, Yuefei Dai, Zeyu Zheng, Kang Yao
Among existing lightweight metals, magnesium (Mg) alloys have garnered significant attention due to their exceptional specific strength. However, their laser welding applications face challenges from porosity, cracking, and grain coarsening defects. Rare earth (RE) elements, leveraging their unique strengthening effects, offer a promising solution for refining weld microstructures and suppressing welding defects. Nevertheless, a systematic review of RE-enhanced mechanisms and defect suppression strategies remains lacking. This paper systematically reviews recent research advancements in Mg alloy laser welding, with a focused elucidation of the governing effects of welding parameters on weld performance, and the core mechanistic roles of RE elements in the welded joint. Furthermore, we discuss key challenges and future directions in process optimization, service performance enhancement, and industrial scalability of RE-modified Mg alloy welding. The findings aim to provide theoretical foundations for designing high-performance welded Mg-RE structures and advance lightweight manufacturing technologies in aerospace, electric vehicles, and other cutting-edge industries.
在现有的轻质金属中,镁(Mg)合金因其特殊的比强度而备受关注。然而,它们的激光焊接应用面临着气孔、开裂和晶粒粗化缺陷的挑战。稀土元素利用其独特的强化效应,为改善焊缝组织和抑制焊接缺陷提供了一种很有前景的解决方案。然而,对re增强机制和缺陷抑制策略的系统综述仍然缺乏。本文系统综述了近年来镁合金激光焊接的研究进展,重点阐述了焊接参数对焊缝性能的影响,以及稀土元素在焊接接头中的核心机理作用。此外,我们还讨论了稀土改性镁合金焊接在工艺优化、服务性能提高和工业可扩展性方面面临的主要挑战和未来发展方向。研究结果旨在为设计高性能焊接Mg-RE结构和推进航空航天、电动汽车和其他尖端行业的轻量化制造技术提供理论基础。
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引用次数: 0
Atomic-scale modeling of defects in magnesium and its alloys: A review 镁及其合金中缺陷的原子尺度模拟研究进展
IF 17.6 1区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING Pub Date : 2025-12-11 DOI: 10.1016/j.jma.2025.11.014
Zhuocheng Xie, Julien Guénolé, Hexin Wang, Joé Petrazoller, Fatim-Zahra Mouhib, Antoine Guitton, Thiebaud Richeton, Stéphane Berbenni, Talal Al-Samman
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引用次数: 0
Orientation dependence of extremely high strength in Mg-Li-Zn single crystals Mg-Li-Zn单晶中极高强度的取向依赖性
IF 17.6 1区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING Pub Date : 2025-12-11 DOI: 10.1016/j.jma.2025.11.012
Koji Hagihara, Shuhei Ohsawa, Toko Tokunaga, Muhammadsanim Tsunekawa
{"title":"Orientation dependence of extremely high strength in Mg-Li-Zn single crystals","authors":"Koji Hagihara, Shuhei Ohsawa, Toko Tokunaga, Muhammadsanim Tsunekawa","doi":"10.1016/j.jma.2025.11.012","DOIUrl":"https://doi.org/10.1016/j.jma.2025.11.012","url":null,"abstract":"","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"9 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145730807","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}
引用次数: 0
Multifunctional hydrophobic/superhydrophobic protective coatings for magnesium alloys: A review on material design, protection mechanisms, and engineering applications 镁合金多功能疏水/超疏水防护涂层:材料设计、防护机理及工程应用综述
IF 17.6 1区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING Pub Date : 2025-12-11 DOI: 10.1016/j.jma.2025.11.006
Qing Xiang, Jingxiong Zeng, Bo Qiao
{"title":"Multifunctional hydrophobic/superhydrophobic protective coatings for magnesium alloys: A review on material design, protection mechanisms, and engineering applications","authors":"Qing Xiang, Jingxiong Zeng, Bo Qiao","doi":"10.1016/j.jma.2025.11.006","DOIUrl":"https://doi.org/10.1016/j.jma.2025.11.006","url":null,"abstract":"","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"227 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145730806","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}
引用次数: 0
Enhancement of unique heat treatment process on microstructure and mechanical properties of thixomolded complex lightweight AZ91D magnesium alloy laptop shell with ultra-thin wall thickness 独特热处理工艺对触模复合轻量化AZ91D镁合金超薄壁厚笔记本电脑外壳组织和力学性能的增强
IF 17.6 1区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING Pub Date : 2025-12-09 DOI: 10.1016/j.jma.2025.11.016
Jingbo Cui, Jufu Jiang, Ying Wang, Jinze Zhang, Jian Dong, Xiaodong Zhang, Lingbo Kong, Weirong Li, Chunhua Li
In this research, thixomolding was conducted to thixoform complex AZ91D magnesium alloy laptop shell with ultra-thin wall thickness of 0.6 mm and lightweight of 192 g. Subsequently, unique heat treatment process (i.e., low temperature and short time solution and artificial aging) was proposed to achieve collaborative enhancement of strength and ductility. Thixomolding process guaranteed exceptional surface quality, preeminent dimensional accuracy, dense microstructure, excellent grain refinement and adequate filling of laptop shell due to high pressure and sub-rapid solidification. The optimal parameter including 380 °C-0.5 h solution and 180 °C-4 h aging was obtained via single variable experiments. Consequently, the distinguished mechanical properties of 351 MPa (ultimate tensile strength), 201 MPa (yield strength) and 7.2 % (elongation) were achieved, realizing comprehensive improvement of 24.0 %, 8.6 % and 157 %, respectively, compared to without heat treatment. In thixomolding process, the second phases caused mixed fracture dominated by brittle fracture. With optimal solution treatment, the second phases dissolved and realized completely ductile fracture. After aging treatment, the nano precipitates were dispersed uniformly in the α-Mg matrix and transformed into mixed fracture dominated by ductile fracture. Nanoscale phases of β-Mg17Al12, Mg16Al12Zn and Al8Mn5 dispersed precipitation within the matrix after unique heat treatment, cooperated with dislocations and twins to jointly strengthen the laptop shell. The calculated contributions of precipitate phases strengthening, grain refining strengthening, dislocation strengthening, and texture strengthening were 41.3 %, 34.4 %, 16.3 % and 8.0 %, respectively. This paper provided new alternative for ultra-thin-walled lightweight magnesium alloy products, achieving the breakthrough for AZ91D alloy in mechanical properties.
本研究对触形复杂的AZ91D镁合金笔记本电脑外壳进行触形成型,其超薄壁厚为0.6 mm,轻量化为192 g。随后,提出了独特的热处理工艺(即低温短时间固溶和人工时效),实现强度和延性的协同增强。触控成型工艺保证了卓越的表面质量、卓越的尺寸精度、致密的微观结构、优异的晶粒细化和笔记本电脑外壳的充分填充,因为高压和亚快速凝固。通过单变量实验确定了最佳工艺参数为380°C-0.5 h溶液和180°C-4 h时效。结果表明,合金的极限抗拉强度为351 MPa,屈服强度为201 MPa,延伸率为7.2 %,与未热处理相比,综合性能分别提高了24.0 %,8.6 %和157 %。触成形过程中,第二相产生以脆性断裂为主的混合型断裂。通过优化固溶处理,第二相溶化,实现完全韧性断裂。时效处理后,纳米析出相均匀分散在α-Mg基体中,形成以韧性断裂为主的混合型断口。纳米相β-Mg17Al12、Mg16Al12Zn和Al8Mn5经独特热处理后分散析出在基体内,与位错和孪晶共同强化笔记本电脑外壳。析出相强化、晶粒细化强化、位错强化和织构强化的贡献率分别为41.3 %、34.4 %、16.3 %和8.0 %。为超薄壁轻量化镁合金产品提供了新的选择,实现了AZ91D合金在力学性能上的突破。
{"title":"Enhancement of unique heat treatment process on microstructure and mechanical properties of thixomolded complex lightweight AZ91D magnesium alloy laptop shell with ultra-thin wall thickness","authors":"Jingbo Cui, Jufu Jiang, Ying Wang, Jinze Zhang, Jian Dong, Xiaodong Zhang, Lingbo Kong, Weirong Li, Chunhua Li","doi":"10.1016/j.jma.2025.11.016","DOIUrl":"https://doi.org/10.1016/j.jma.2025.11.016","url":null,"abstract":"In this research, thixomolding was conducted to thixoform complex AZ91D magnesium alloy laptop shell with ultra-thin wall thickness of 0.6 mm and lightweight of 192 g. Subsequently, unique heat treatment process (i.e., low temperature and short time solution and artificial aging) was proposed to achieve collaborative enhancement of strength and ductility. Thixomolding process guaranteed exceptional surface quality, preeminent dimensional accuracy, dense microstructure, excellent grain refinement and adequate filling of laptop shell due to high pressure and sub-rapid solidification. The optimal parameter including 380 °C-0.5 h solution and 180 °C-4 h aging was obtained via single variable experiments. Consequently, the distinguished mechanical properties of 351 MPa (ultimate tensile strength), 201 MPa (yield strength) and 7.2 % (elongation) were achieved, realizing comprehensive improvement of 24.0 %, 8.6 % and 157 %, respectively, compared to without heat treatment. In thixomolding process, the second phases caused mixed fracture dominated by brittle fracture. With optimal solution treatment, the second phases dissolved and realized completely ductile fracture. After aging treatment, the nano precipitates were dispersed uniformly in the α-Mg matrix and transformed into mixed fracture dominated by ductile fracture. Nanoscale phases of β-Mg<ce:inf loc=\"post\">17</ce:inf>Al<ce:inf loc=\"post\">12</ce:inf>, Mg<ce:inf loc=\"post\">16</ce:inf>Al<ce:inf loc=\"post\">12</ce:inf>Zn and Al<ce:inf loc=\"post\">8</ce:inf>Mn<ce:inf loc=\"post\">5</ce:inf> dispersed precipitation within the matrix after unique heat treatment, cooperated with dislocations and twins to jointly strengthen the laptop shell. The calculated contributions of precipitate phases strengthening, grain refining strengthening, dislocation strengthening, and texture strengthening were 41.3 %, 34.4 %, 16.3 % and 8.0 %, respectively. This paper provided new alternative for ultra-thin-walled lightweight magnesium alloy products, achieving the breakthrough for AZ91D alloy in mechanical properties.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"15 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145704930","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}
引用次数: 0
期刊
Journal of Magnesium and Alloys
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