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Effect of Nb Content on Microstructure and Mechanical Properties of Mo0.25V0.25Ti1.5Zr0.5Nbx High-Entropy Alloys
Zhang, Fengqi1,2; Xiang, Chao3; Han, En-Hou1,3; Zhang, Zijian1,2
Corresponding AuthorHan, En-Hou(ehhan@imr.ac.cn)
2022-04-22
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages12
AbstractHigh-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.
KeywordHigh-entropy alloy CALPHAD Microstructure Hardness Mechanical properties
Funding OrganizationLingChuang Research Project of China National Nuclear Corporation
DOI10.1007/s40195-022-01399-2
Indexed BySCI
Language英语
Funding ProjectLingChuang Research Project of China National Nuclear Corporation
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000785590200001
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/172889
Collection中国科学院金属研究所
Corresponding AuthorHan, En-Hou
Affiliation1.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
Recommended Citation
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.
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