Gradient cell-structured high-entropy alloy with exceptional strength and ductility

doi:10.1126/science.abj8114

IMR OpenIR

	Gradient cell-structured high-entropy alloy with exceptional strength and ductility
	Pan, Qingsong 1; Zhang, Liangxue 1,2; Feng, Rui 3; Lu, Qiuhong 1; An, Ke 3; Chuang, Andrew Chihpin 4; Poplawsky, Jonathan D.5; Liaw, Peter K.6; Lu, Lei 1
通讯作者	Lu, Lei(llu@imr.ac.cn)
	2021-11-19
发表期刊	SCIENCE
ISSN	0036-8075
卷号	374 期号:6570 页码:984-+
摘要	Similar to conventional materials, most multicomponent high-entropy alloys (HEAs) lose ductility as they gain strength. In this study, we controllably introduced gradient nanoscaled dislocation cell structures in a stable single-phase HEA with face-centered cubic structure, thus resulting in enhanced strength without apparent loss of ductility. Upon application of strain, the sample-level structural gradient induces progressive formation of a high density of tiny stacking faults (SFs) and twins, nucleating from abundant low-angle dislocation cells. Furthermore, the SF-induced plasticity and the resultant refined structures, coupled with intensively accumulated dislocations, contribute to plasticity, increased strength, and work hardening. These findings offer a promising paradigm for tailoring properties with gradient dislocation cells at the nanoscale and advance our fundamental understanding of the intrinsic deformation behavior of HEAs.
DOI	10.1126/science.abj8114
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000720789200034
出版者	AMER ASSOC ADVANCEMENT SCIENCE
引用统计	被引频次：272[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/321006/167531
专题	中国科学院金属研究所
通讯作者	Lu, Lei
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Oak Ridge Natl Lab, Neutron Scattering Div, Oak Ridge, TN 37831 USA 4.Argonne Natl Lab, Adv Photon Source, Lemont, IL 60439 USA 5.Oak Ridge Natl Lab, Ctr Nanophases Mat Sci, Oak Ridge, TN 37831 USA 6.Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA
推荐引用方式 GB/T 7714	Pan, Qingsong,Zhang, Liangxue,Feng, Rui,et al. Gradient cell-structured high-entropy alloy with exceptional strength and ductility[J]. SCIENCE,2021,374(6570):984-+.
APA	Pan, Qingsong.,Zhang, Liangxue.,Feng, Rui.,Lu, Qiuhong.,An, Ke.,...&Lu, Lei.(2021).Gradient cell-structured high-entropy alloy with exceptional strength and ductility.SCIENCE,374(6570),984-+.
MLA	Pan, Qingsong,et al."Gradient cell-structured high-entropy alloy with exceptional strength and ductility".SCIENCE 374.6570(2021):984-+.