Exceptional strength-ductility synergy in a casting multi-principal element alloy with a hierarchically heterogeneous structure

doi:10.1016/j.mattod.2024.10.009

IMR OpenIR

	Exceptional strength-ductility synergy in a casting multi-principal element alloy with a hierarchically heterogeneous structure
	Gao, Qingwei 1; Kou, Zongde 2; Zhou, Changshan 1; Liu, Xiaoming 1; Zhang, Jiyao 1; Gong, Jianhong 1; Song, Kaikai 1; Hu, Lina 3; Liu, Zengqian 4; Zhang, Zhefeng 4; Eckert, Juergen 5,6; Ritchie, Robert O.7
通讯作者	Song, Kaikai(songkaikai8297@gmail.com) ; Hu, Lina(hulina0614@sdu.edu.cn) ; Liu, Zengqian(zengqianliu@imr.ac.cn)
	2024-12-01
发表期刊	MATERIALS TODAY
ISSN	1369-7021
卷号	81 页码:70-83
摘要	Designing multiscale heterostructures by taking lessons from Nature provides a promising strategy for achieving excellent strength-ductility synergy in metals and alloys. The achievement of this goal usually requires intricate multi-step thermomechanical processing, but this is still a challenge with casting alloys rather than wrought ones. Here, we developed a Cr30Fe30Ni30Al5Ti5 (at.%) casting multi- principal element alloy (MPEA) which exhibits, in the as-cast condition, a hierarchically heterogeneous structure involving precipitates at multiple length scales. Microscale body-centered-cubic (BCC) grains are dispersed throughout a continuous face-centered-cubic (FCC) structural framework. Coherent L12 nanoparticles form in the FCC matrix, while abundant nanoparticles with hierarchical dimensions (i.e., of g, B2, and g/L21 phases) precipitate inside the BCC grains. The synergistic interactions between dislocations and multiscale precipitates which induce massive dislocation networks and stacking faults result in stable strain-hardening behavior, endowing the alloy with an exceptional combination of strength and ductility without the need for homogenization and complex processing. We believe that this represents a breakthrough that surpasses known casting MPEAs and offers implications for developing new high-performance casting alloys.
资助者	Foundation of Shandong Province ; National Key R&D Program of China ; National Natural Science Foundation of China ; Liaoning Outstanding Youth Foundation
DOI	10.1016/j.mattod.2024.10.009
收录类别	SCI
语种	英语
资助项目	Foundation of Shandong Province[ZR2023ME216] ; National Key R&D Program of China[2020YFA0710404] ; National Natural Science Foundation of China[52471152] ; Liaoning Outstanding Youth Foundation[2024JH3/50100015]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:001381338700001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/181147
专题	中国科学院金属研究所
通讯作者	Song, Kaikai; Hu, Lina; Liu, Zengqian
作者单位	1.Shandong Univ, Sch Mech Elect & Informat Engn, Weihai 264209, Peoples R China 2.Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Peoples R China 3.Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 5.Austrian Acad Sci, Erich Schmid Inst Mat Sci, A-8700 Leoben, Austria 6.Univ Leoben, Dept Mat Sci, A-8700 Leoben, Austria 7.Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA
推荐引用方式 GB/T 7714	Gao, Qingwei,Kou, Zongde,Zhou, Changshan,et al. Exceptional strength-ductility synergy in a casting multi-principal element alloy with a hierarchically heterogeneous structure[J]. MATERIALS TODAY,2024,81:70-83.
APA	Gao, Qingwei.,Kou, Zongde.,Zhou, Changshan.,Liu, Xiaoming.,Zhang, Jiyao.,...&Ritchie, Robert O..(2024).Exceptional strength-ductility synergy in a casting multi-principal element alloy with a hierarchically heterogeneous structure.MATERIALS TODAY,81,70-83.
MLA	Gao, Qingwei,et al."Exceptional strength-ductility synergy in a casting multi-principal element alloy with a hierarchically heterogeneous structure".MATERIALS TODAY 81(2024):70-83.