Ultrahigh grain boundary strengthening ability of VCoNi medium entropy alloy

doi:10.1016/j.matchar.2023.113419

IMR OpenIR

	Ultrahigh grain boundary strengthening ability of VCoNi medium entropy alloy
	Liu, Guo-Dong 1,2; Luo, Xue-Mei 1; Zou, Ji-Peng 1,2; Zhang, Bin 3; Zhang, Guang-Ping 1
通讯作者	Luo, Xue-Mei(xmluo@imr.ac.cn) ; Zhang, Guang-Ping(gpzhang@imr.ac.cn)
	2023-12-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	206 页码:12
摘要	Tensile tests of VCoNi medium-entropy alloy with different grain sizes were conducted at 77 K, 194 K and 293 K. The results show that the grain boundary strengthening ability characterized by the Hall-Petch slope of the alloy increases with decreasing temperature and is evidently higher than that of FCC pure metals, Cu-Al alloys, and some common FCC high-entropy alloys/medium-entropy alloys at room temperature. A new model correlated to intrinsic stacking fault energy and lattice friction stress is derived to describe the high grain boundary strengthening ability. The high grain boundary strengthening ability and its temperature dependence of the VCoNi medium-entropy alloy are mainly attributed to the high lattice friction stress of the VCoNi alloy. The findings provide a possibility for designing the single-phase FCC medium-entropy alloy with ultra-high yield strength and considerable plasticity.
关键词	Medium-entropy alloy Grain boundary Strengthening ability Lattice friction stress Intrinsic stacking fault energy
资助者	National Natural Science Foundation of China (NSFC) ; Fundamental Research Project of Shenyang National Laboratory for Materials Science
DOI	10.1016/j.matchar.2023.113419
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[52171128] ; Fundamental Research Project of Shenyang National Laboratory for Materials Science[L2019R18]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:001104208400001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：4[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/321006/177232
专题	中国科学院金属研究所
通讯作者	Luo, Xue-Mei; Zhang, Guang-Ping
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Liu, Guo-Dong,Luo, Xue-Mei,Zou, Ji-Peng,et al. Ultrahigh grain boundary strengthening ability of VCoNi medium entropy alloy[J]. MATERIALS CHARACTERIZATION,2023,206:12.
APA	Liu, Guo-Dong,Luo, Xue-Mei,Zou, Ji-Peng,Zhang, Bin,&Zhang, Guang-Ping.(2023).Ultrahigh grain boundary strengthening ability of VCoNi medium entropy alloy.MATERIALS CHARACTERIZATION,206,12.
MLA	Liu, Guo-Dong,et al."Ultrahigh grain boundary strengthening ability of VCoNi medium entropy alloy".MATERIALS CHARACTERIZATION 206(2023):12.