Effect of Nb Content on Microstructure and Mechanical Properties of Mo0.25V0.25Ti1.5Zr0.5Nbx High-Entropy Alloys

doi:10.1007/s40195-022-01399-2

IMR OpenIR

	Effect of Nb Content on Microstructure and Mechanical Properties of Mo0.25V0.25Ti1.5Zr0.5Nbx High-Entropy Alloys
	Zhang, Fengqi 1,2; Xiang, Chao 3; Han, En-Hou 1,3; Zhang, Zijian 1,2
通讯作者	Han, En-Hou(ehhan@imr.ac.cn)
	2022-04-22
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	12
摘要	High-entropy alloys (HEAs) have significant application prospects as promising candidate materials for nuclear industry due to their excellent mechanical properties, corrosion resistance and irradiation resistance. In this work, the Mo0.25V0.25Ti1.5Zr0.5Nbx (x = 0, 0.25, 0.5, 0.75 and 1.0) HEAs were designed and fabricated. The alloys were prepared by vacuum arc melting, and all the ingots were annealed at 1200 degrees C for 24 h. The microstructures, crystal structures, hardness and mechanical properties of Mo0.25V0.25Ti1.5Zr0.5Nbx HEAs were investigated. The as-cast alloys are composed of single BCC phase. Moreover, the single BCC phase is retained after annealing at 1200 degrees C for 24 h. The compressive and microhardness tests show that the strength and hardness of the alloys decrease gradually with the increase of Nb content, while the plasticity increases and the fracture mode of the alloy changes from brittle fracture to ductile fracture, which is mainly owing to the decrease of grain size. The addition of Nb significantly improves the plasticity of the Mo0.25V0.25Ti1.5Zr0.5Nbx alloys. In particular, Nb1.0 alloy can reach 28.32 % strain without fracture, which exhibits promising potential in industrial application.
关键词	High-entropy alloy CALPHAD Microstructure Hardness Mechanical properties
资助者	LingChuang Research Project of China National Nuclear Corporation
DOI	10.1007/s40195-022-01399-2
收录类别	SCI
语种	英语
资助项目	LingChuang Research Project of China National Nuclear Corporation
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000785590200001
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：10[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/321006/172889
专题	中国科学院金属研究所
通讯作者	Han, En-Hou
作者单位	1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Inst Corros Sci & Technol, Guangzhou 510530, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Fengqi,Xiang, Chao,Han, En-Hou,et al. Effect of Nb Content on Microstructure and Mechanical Properties of Mo0.25V0.25Ti1.5Zr0.5Nbx High-Entropy Alloys[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2022:12.
APA	Zhang, Fengqi,Xiang, Chao,Han, En-Hou,&Zhang, Zijian.(2022).Effect of Nb Content on Microstructure and Mechanical Properties of Mo0.25V0.25Ti1.5Zr0.5Nbx High-Entropy Alloys.ACTA METALLURGICA SINICA-ENGLISH LETTERS,12.
MLA	Zhang, Fengqi,et al."Effect of Nb Content on Microstructure and Mechanical Properties of Mo0.25V0.25Ti1.5Zr0.5Nbx High-Entropy Alloys".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2022):12.