Effect of Cr content on microstructure and properties of Mo0.5VNbTiCrx high-entropy alloys

doi:10.1016/j.jallcom.2019.153352

IMR OpenIR

	Effect of Cr content on microstructure and properties of Mo0.5VNbTiCrx high-entropy alloys
	Xiang, C.1,2; Fu, H. M.3; Zhang, Z. M.1; Han, E-H 1; Zhang, H. F.3; Wang, J. Q.1; Hu, G. D.3,4
通讯作者	Han, E-H(ehhan@imr.ac.cn)
	2020-03-25
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	818 页码:12
摘要	A combination of good mechanical properties, excellent corrosion resistance and superior irradiation resistance made high-entropy alloys (HEAs) as promising nuclear materials. In this work, the Mo0.5VNbTiCrx (x = 0-2.0) HEAs containing elements with low thermal neutron absorption crosssections were designed and prepared. The alloys were produced by vacuum arc melting, followed by hot isostatic pressing at 1200 degrees C and 150 MPa for 2 h and annealing at 1200 degrees C for 72 h. The crystal structure, microstructure, hardness, and mechanical properties of the annealed alloys were investigated. The corrosion resistance in superheated steam was also preliminarily studied. When 0 <= x <= 0.75, the alloys consist of one body-centered cubic (BCC) phase. When 1.0 <= x <= 2.0, the alloys are composed of one BCC phase, one C15 Laves phase, and another face-centered cubic (FCC) phase. The effect of Cr content on the phase formation is discussed. The hardness and yield strength increase substantially with increasing Cr content, which could be attributed to the solid-solution-like strengthening. Moreover, the addition of Cr improves the anti-corrosion properties in superheated steam and the studied alloys exhibit better corrosion resistance than a currently used Zr-4 alloy. The Mo0.5VNbTi and Mo0.5VNbTiCr0.25 alloys exhibit the promising potential to be used as nuclear materials, as they show a good combination of mechanical properties and corrosion resistance. (C) 2019 Elsevier B.V. All rights reserved.
关键词	High-entropy alloy Microstructure Phase composition Hardness Mechanical properties
资助者	Key Program of the Chinese Academy of Sciences
DOI	10.1016/j.jallcom.2019.153352
收录类别	SCI
语种	英语
资助项目	Key Program of the Chinese Academy of Sciences[ZDRW-CN-2017-1]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000506166900040
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：35[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/321006/136379
专题	中国科学院金属研究所
通讯作者	Han, E-H
作者单位	1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Xiang, C.,Fu, H. M.,Zhang, Z. M.,et al. Effect of Cr content on microstructure and properties of Mo0.5VNbTiCrx high-entropy alloys[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2020,818:12.
APA	Xiang, C..,Fu, H. M..,Zhang, Z. M..,Han, E-H.,Zhang, H. F..,...&Hu, G. D..(2020).Effect of Cr content on microstructure and properties of Mo0.5VNbTiCrx high-entropy alloys.JOURNAL OF ALLOYS AND COMPOUNDS,818,12.
MLA	Xiang, C.,et al."Effect of Cr content on microstructure and properties of Mo0.5VNbTiCrx high-entropy alloys".JOURNAL OF ALLOYS AND COMPOUNDS 818(2020):12.