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Tailoring the specific strength of AlNbTiZr high entropy alloys via Si doping

文献类型：期刊论文

作者Shi, Yuquan2,3; Zhang, Yuan2,3; Ding G(丁淦)1; Cai SL(蔡松林)1; Li MC(李明灿)1,2,3
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2025-11-01
卷号946页码:9
关键词Lightweight refractory high-entropy alloys Silicide Specific strength Microstructure Mechanical properties
ISSN号0921-5093
DOI10.1016/j.msea.2025.149076
通讯作者Li, Mingcan(limingcan@xju.edu.cn)
英文摘要Lightweight refractory high-entropy alloys (LRHEAs) have received much attention due to their attractive properties and novel design concept. However, their engineering applications are severely constrained by prominent room-temperature brittleness and insufficient strength. This study systematically investigates the effects of Si alloying on the microstructure evolution and mechanical properties of Al13Nb29Ti29Zr29 LRHEAs. The findings reveal that Si addition induces two distinct effects: on one hand, it promotes the formation of nanoscale Zr5Si3 silicide at grain boundaries; on the other hand, it significantly refines the grain size of the alloys. While the former provides second-phase strengthening at the expense of deteriorating plasticity, the latter simultaneously enhances both strength and plasticity. The synergistic interaction between these two mechanisms enables the alloy to maintain favorable deformability alongside remarkable strength enhancement. Moreover, the addition of Si significantly reduces the density of the alloys, endowing the (Al13Nb29Ti29Zr29)98Si2 alloy with an ultra-high specific strength. The novel alloys developed in this work combine high specific strength, significant plasticity, and extremely low density, which shows desirable applications in high-strength lightweight materials.
分类号一类
WOS关键词MECHANICAL-PROPERTIES ; MICROSTRUCTURE ; PRECIPITATION ; DUCTILE
资助项目National Natural Science Foundation of China[52261028] ; National Natural Science Foundation of China[12562008] ; Tianshan Talent Training Program of Xinjiang Uygur Autonomous Region of China[2024TSYCJU0003] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region of China[2022D01C383]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001570467100002
资助机构National Natural Science Foundation of China ; Tianshan Talent Training Program of Xinjiang Uygur Autonomous Region of China ; Natural Science Foundation of Xinjiang Uygur Autonomous Region of China
其他责任者Li, Mingcan
源URL[http://dspace.imech.ac.cn/handle/311007/103862]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
2.Xinjiang Univ, Sch Mat Sci & Engn, Urumqi 830046, Xinjiang, Peoples R China;
3.Xinjiang Univ, Xinjiang Engn Res Ctr Environm & Funct Mat, Urumqi 830046, Xinjiang, Peoples R China;
推荐引用方式
GB/T 7714		 Shi, Yuquan,Zhang, Yuan,Ding G,et al. Tailoring the specific strength of AlNbTiZr high entropy alloys via Si doping[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2025,946:9.
APA Shi, Yuquan,Zhang, Yuan,丁淦,蔡松林,&李明灿.(2025).Tailoring the specific strength of AlNbTiZr high entropy alloys via Si doping.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,946,9.
MLA Shi, Yuquan,et al."Tailoring the specific strength of AlNbTiZr high entropy alloys via Si doping".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 946(2025):9.

入库方式： OAI收割

来源：力学研究所

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