Dislocation slip induced tensile plasticity and improved work-hardening capability of high-entropy metallic glass composite

doi:10.1016/j.intermet.2021.107407

CORC > 金属研究所 > 中国科学院金属研究所

	Dislocation slip induced tensile plasticity and improved work-hardening capability of high-entropy metallic glass composite
	Liu, Minglei 1,2; Li, Wei 2,3; Lin, Shifeng 1,2; Fu, Huameng 2,3; Li, Hong 2,3; Wang, Aimin 2,3; Lin, Xiaoping 1; Zhang, Haifeng 2,3; Zhu, Zhengwang 2,3
刊名	INTERMETALLICS
	2022-02-01
卷号	141 页码:8
关键词	High-entropy metallic glass Composite Tensile properties High-entropy alloy Dislocation slip
ISSN号	0966-9795
DOI	10.1016/j.intermet.2021.107407
通讯作者	Zhu, Zhengwang(zwzhu@imr.ac.cn)
英文摘要	The high-entropy metallic glasses (HEMGs), combining the characteristics of high-entropy alloys (HEAs) and metallic glasses (MGs), have recently appeared and become the research focus, due to their good glass-forming ability and high strength. However, the application of HEMGs as structural material is restricted owing to the limited tensile plasticity and absence of dislocation-dominated deformation mechanism. To resolve this pressing issue, a stable beta-phase HEMG composite (beta-type HEMGC) Ti20Zr20Hf20Nb16Co5Be19 composed of the bcc refractory HEA (RHEA) dendrites and the HEMG matrix was fabricated. Ti20Zr20Hf20Nb16Co5Be19 not only exhibits good tensile ductility, but also has the improved work-hardening capability under room temperature tension. Essentially, the dislocation-dominated deformation mechanism plays a significant role in achieving the excellent combination of good tensile plasticity and improved work-hardening capability of the stable p-type HEMGC. The tensile ductility of Ti20Zr20Hf20Nb16Co5Be19 is attributed to the dislocation-slip mechanism induced by highstable HEA dendrites, and the dislocation pile-up phenomenon has a great influence on the improved workhardening capability of composite. The present results provide an indepth understanding of the deformation behavior of stable beta-type HEMGCs, and a reference for how to improve the strength-ductility combination of HEMG-matrix composites.
资助项目	National Natural Science Foundation of China[52074257] ; National Natural Science Foundation of China[51790484] ; Chinese Academy of Sciences[ZDBS-LY-JSC023] ; Liao Ning Revitalization Talents Program[XLYC1802078] ; Liao Ning Revitalization Talents Program[XLYC1807062] ; [19-9-2-1-wz]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000720752800003
资助机构	National Natural Science Foundation of China ; Chinese Academy of Sciences ; Liao Ning Revitalization Talents Program
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/167368]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhu, Zhengwang
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liu, Minglei,Li, Wei,Lin, Shifeng,et al. Dislocation slip induced tensile plasticity and improved work-hardening capability of high-entropy metallic glass composite[J]. INTERMETALLICS,2022,141:8.
APA	Liu, Minglei.,Li, Wei.,Lin, Shifeng.,Fu, Huameng.,Li, Hong.,...&Zhu, Zhengwang.(2022).Dislocation slip induced tensile plasticity and improved work-hardening capability of high-entropy metallic glass composite.INTERMETALLICS,141,8.
MLA	Liu, Minglei,et al."Dislocation slip induced tensile plasticity and improved work-hardening capability of high-entropy metallic glass composite".INTERMETALLICS 141(2022):8.