Near-Equiatomic mu Phase in Self-Sharpening Tungsten-Based High-Entropy Alloys

doi:10.3390/met12071130

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Near-Equiatomic mu Phase in Self-Sharpening Tungsten-Based High-Entropy Alloys
	Liu TW(刘天威)1,2; Li T(李统)1,2; Dai LH(戴兰宏)1,2
刊名	METALS
	2022-07-01
卷号	12 期号:7 页码:12
关键词	high-entropy alloys TCP phase mu phase self-sharpening transmission electron microscope
DOI	10.3390/met12071130
通讯作者	Dai, Lan-Hong(lhdai@lnm.imech.ac.cn)
英文摘要	The topologically close-packed (TCP) mu phase is usually known as an undesirable precipitation in highly alloyed Ni-base superalloys and steels. However, the ultrastrong mu phase with micron/nano-scale distribution plays a key role in driving the emergence of self-sharpening in our recently developed WMoFeNi high-entropy alloy (HEA). Herein, a detailed study is carried out to understand the substructure and atomic occupation of the mu phase by scanning electron microscope (SEM) and aberration-corrected transmission electron microscope (ACTEM). The Fe/Ni and W/Mo element pairs are equivalent in the mu phase structure. Moreover, the elements in mu. phase exhibit a near-equiatomic ratio, and the mu phase can grow during annealing at 1150 degrees C. (0001)(mu) and (1 (1) over bar 02)(mu) twins are the main substructures of the mu phase, and their atomic configurations and twinning mechanisms are investigated. The geometrical structural analysis of mu phase possesses a great significance for the design of self-sharpening HEAs.
分类号	二类
资助项目	National Science Foundation of China (NSFC)[51901235] ; National Science Foundation of China (NSFC)[51931005] ; National Science Foundation of China (NSFC)[11790292] ; National Science Foundation of China (NSFC)[11572324] ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; Ye Qisun Science Foundation of National Natural Science Foundation of China[U2141204] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040302] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040303] ; opening project of State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology)[KFJJ18-14M]
WOS关键词	PLANAR DEFECTS ; TCP PHASE ; BEHAVIOR ; DEFORMATION ; MICROSTRUCTURE ; TEMPERATURE ; PARTICLES ; SIZE
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000833327900001
资助机构	National Science Foundation of China (NSFC) ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; Ye Qisun Science Foundation of National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; opening project of State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology)
其他责任者	Dai, Lan-Hong
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/89809]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
推荐引用方式 GB/T 7714	Liu TW,Li T,Dai LH. Near-Equiatomic mu Phase in Self-Sharpening Tungsten-Based High-Entropy Alloys[J]. METALS,2022,12(7):12.
APA	刘天威,李统,&戴兰宏.(2022).Near-Equiatomic mu Phase in Self-Sharpening Tungsten-Based High-Entropy Alloys.METALS,12(7),12.
MLA	刘天威,et al."Near-Equiatomic mu Phase in Self-Sharpening Tungsten-Based High-Entropy Alloys".METALS 12.7(2022):12.