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A novel reactive high-entropy alloy with ultra-strong strain-rate effect

文献类型：期刊论文

作者Zhang WH(张洧菡)2,4; Li T(李统)4; Chen Y(陈艳)1,4; Tan YY(谭园园)4; Wang HY(汪海英)1,4; Dai LH(戴兰宏)1,2,3,4
刊名INTERMETALLICS
出版日期2025-05-01
卷号180页码:8
关键词High-entropy alloys Reactive structure materials Impact behaviour Strain-rate effect
ISSN号0966-9795
DOI10.1016/j.intermet.2025.108689
通讯作者Chen, Yan(chenyan@lnm.imech.ac.cn) ; Dai, Lan-Hong(lhdai@lnm.imech.ac.cn)
英文摘要Reactive structural materials are crucial for energy exploitation and defense applications due to their outstanding energy release characteristics. However, traditional reactive structural materials often struggle to meet the required mechanical properties. In contrast, reactive high-entropy alloys that balance mechanical performance and energy release characteristics show great potential in this field. Here, we designed the active high-entropy alloy Ti50Zr25Hf12.5Nb12.5, at% using a metastable high-entropy alloy design strategy ("d-electron alloy" strategy). The alloy exhibits a single-phase BCC structure both before and after quasi-static tension, but undergoes an impact-induced omega phase transition during dynamic tension, resulting in an unprecedented increase in yield strength from 751 MPa to 1577 MPa (an increase of 110 %). Microstructural characterization revealed that the high-density dislocation walls resulting from the omega phase transition contribute to the significant strain-rate effect of the alloy. Furthermore, direct ballistic tests demonstrated that this novel active high-entropy alloy possesses excellent energy release characteristics (similar to 0.27 MPa assessed via Vented Chamber Calorimetry in 996 m/s direct ballistic test). This work sheds new light on designing reactive high entropy alloy with high dynamic strength may provide a mean to develop a wide range of advanced reactive structural materials.
分类号二类/Q1
WOS关键词SIGMA-PHASE FORMATION ; BETA-TITANIUM ALLOY ; ENERGETIC CHARACTERISTICS ; OMEGA-PHASE ; CRITERION ; ALUMINUM ; BEHAVIOR ; MICROSTRUCTURE ; COMBUSTION ; TRANSITION
资助项目NSFC[12432019] ; NSFC[U2141204] ; NSFC[11972346] ; NSFC[12102433] ; NSFC[U2241285] ; NSFC Basic Science Center Program[11988102] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-2-3] ; National Key Research and Development Program of China[2022YFC3320504-02] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB0620301] ; Postdoctoral Fellowship Program of CPSF[BX20240387]
WOS研究方向Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001424006100001
资助机构NSFC ; NSFC Basic Science Center Program ; Key Research Program of the Chinese Academy of Sciences ; National Key Research and Development Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Postdoctoral Fellowship Program of CPSF
其他责任者陈艳 ; 戴兰宏
源URL[http://dspace.imech.ac.cn/handle/311007/100125]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China
2.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China;
3.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China;
4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Zhang WH,Li T,Chen Y,et al. A novel reactive high-entropy alloy with ultra-strong strain-rate effect[J]. INTERMETALLICS,2025,180:8.
APA 张洧菡,李统,陈艳,谭园园,汪海英,&戴兰宏.(2025).A novel reactive high-entropy alloy with ultra-strong strain-rate effect.INTERMETALLICS,180,8.
MLA 张洧菡,et al."A novel reactive high-entropy alloy with ultra-strong strain-rate effect".INTERMETALLICS 180(2025):8.

入库方式： OAI收割

来源：力学研究所

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