A nanocrystalline AlCoCuNi medium-entropy alloy with high thermal stability via entropy and boundary engineering

doi:10.1016/j.msea.2020.138925

	A nanocrystalline AlCoCuNi medium-entropy alloy with high thermal stability via entropy and boundary engineering
	Deng, H. W.1,2; Xie, Z. M.1; Wang, M. M.1,2; Chen, Y.1,2; Liu, R.1; Yang, J. F.1; Zhang, T.3; Wang, X. P.1; Fang, Q. F.1; Liu, C. S.1
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2020-02-13
卷号	774
关键词	AlCoCuNi Medium-entropy alloy Dual-phase nanocrystalline Thermal stability
ISSN号	0921-5093
DOI	10.1016/j.msea.2020.138925
通讯作者	Xie, Z. M.(zmxie@issp.ac.cn) ; Zhang, T.(zhangtao@issp.ac.cn)
英文摘要	A promising strategy involving the synergetic effects of the high-entropy engineering and interface architectures has been proposed to realize the thermal stability of nanocrystalline alloys. A bulk dual-phase nanocrystalline (DPNC-) AlCoCuNi medium-entropy alloy was prepared by mechanical alloying (MA) and spark plasma sintering (SPS) process. These DPNC structures include Cu-rich and AlCoNi-rich nanocrystallines (NCs) with an average grain size of 46 nm. This DPNC-AlCoCuNi material could maintain the nanostructures as well as a high hardness of about 580 HV even after annealing at 900 degrees C for 50 h. The extremely high thermal stability has been attributed to the extensive thermal-stabled low-energy phase boundaries, low-angle grain boundaries, the high-entropy and sluggish diffusion effects.
资助项目	National Natural Science Foundation of China[51771184] ; National Natural Science Foundation of China[11735015] ; National Natural Science Foundation of China[11575241] ; National Natural Science Foundation of China[51801203] ; National Natural Science Foundation of China[11674319] ; Natural Science Foundation of Anhui Province[1808085QE132] ; Open Project of State Key Laboratory of Environment friendly Energy Materials[18KFHG02]
WOS关键词	MECHANICAL-PROPERTIES ; STABILIZATION ; MICROSTRUCTURE ; TEMPERATURE ; PROPERTY ; ELEMENTS
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000514747200008
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Anhui Province ; Open Project of State Key Laboratory of Environment friendly Energy Materials
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/103851]
专题	中国科学院合肥物质科学研究院
通讯作者	Xie, Z. M.; Zhang, T.
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China 3.Guang Zhou Univ, Sch Phys & Elect Engn, Guangzhou, Guangdong, Peoples R China 4.Southwest Univ Sci & Technol, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Deng, H. W.,Xie, Z. M.,Wang, M. M.,et al. A nanocrystalline AlCoCuNi medium-entropy alloy with high thermal stability via entropy and boundary engineering[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,774.
APA	Deng, H. W..,Xie, Z. M..,Wang, M. M..,Chen, Y..,Liu, R..,...&Xiong, Y..(2020).A nanocrystalline AlCoCuNi medium-entropy alloy with high thermal stability via entropy and boundary engineering.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,774.
MLA	Deng, H. W.,et al."A nanocrystalline AlCoCuNi medium-entropy alloy with high thermal stability via entropy and boundary engineering".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 774(2020).