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Deformation Behavior and Strengthening Mechanisms of an Additively Manufactured High-Entropy Alloy with Hierarchical Heterostructures

文献类型：期刊论文

作者Bai YJ(白云建)1,5,6; Li YD(李亚东)1,2; Liu YZ(刘一哲)1,2; Yang C(杨成)1,3; Wang YJ(王云江)1,3; Zhang, Kun1,2,4; Wei BC(魏炳忱)1,2,4
刊名INTERNATIONAL JOURNAL OF PLASTICITY
出版日期2025-06-01
卷号189页码:18
关键词Additive manufacturing High-entropy alloys Strengthening mechanism Heterostructures Stress-induced martensitic transformation
ISSN号0749-6419
DOI10.1016/j.ijplas.2025.104347
通讯作者Bai, Yunjian(baiyunjian@sdu.edu.cn) ; Zhang, Kun(zhangkun@imech.ac.cn) ; Wei, Bingchen(weibc@imech.ac.cn)
英文摘要Additive manufacturing (AM) of high-entropy alloys (HEAs) typically results in the formation of unique microstructures and deformation mechanisms, sparking widespread research interest. This study delves into the deformation behavior and strengthening mechanisms of an AMed HEA with hierarchical heterostructures. The results show that the alloy consists of the FCC matrix, coherent L12 precipitates, incoherent L21 precipitates with lens-shaped inclusions, and chemical cells. The distribution of the L21 phase and the lens-shaped inclusions are unique phenomena, mainly attributed to local chemical fluctuations during the AM process. The FCC matrix primarily contributes to plastic deformation, with L12 precipitates enhancing strength through ordered strengthening, and L21 precipitates providing strengthening via Orowan bypassing mechanism. Additionally, dislocation strengthening also contributes to the overall strength. Notably, the lensshaped structures within the L21 phase undergo a stress-induced martensitic transformation during deformation, attributed to their inherent metastability, favorable microstructural locations and grain orientations. These findings deepen the understanding of the microstructures and deformation mechanisms of AMed HEAs, offering valuable insights for the design and optimization of high-performance HEAs in the future.
分类号一类
WOS关键词MICROSTRUCTURAL EVOLUTION ; DUCTILITY ; STRESS
资助项目National Natural Science Foundation of China[12272392] ; National Natural Science Foundation of China[11790292] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040303] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2022020]
WOS研究方向Engineering ; Materials Science ; Mechanics
语种英语
WOS记录号WOS:001483123300001
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
其他责任者白云建，Zhang, Kun，魏炳忱
源URL[http://dspace.imech.ac.cn/handle/311007/101187]  
专题力学研究所_国家微重力实验室
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, Key Lab Micrograv, Natl Micrograv Lab, Beijing 100190, Peoples R China;
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
4.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
5.Shandong Univ, Sch Mech Engn, Key Lab High Efficiency & Clean Mech Manufacture, Minist Educ, Jinan 250061, Peoples R China;
6.Shandong Univ, Natl Demonstrat Ctr Expt Mech Engn Educ, Jinan 250061, Peoples R China;
推荐引用方式
GB/T 7714		 Bai YJ,Li YD,Liu YZ,et al. Deformation Behavior and Strengthening Mechanisms of an Additively Manufactured High-Entropy Alloy with Hierarchical Heterostructures[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2025,189:18.
APA 白云建.,李亚东.,刘一哲.,杨成.,王云江.,...&魏炳忱.(2025).Deformation Behavior and Strengthening Mechanisms of an Additively Manufactured High-Entropy Alloy with Hierarchical Heterostructures.INTERNATIONAL JOURNAL OF PLASTICITY,189,18.
MLA 白云建,et al."Deformation Behavior and Strengthening Mechanisms of an Additively Manufactured High-Entropy Alloy with Hierarchical Heterostructures".INTERNATIONAL JOURNAL OF PLASTICITY 189(2025):18.

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来源：力学研究所

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