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High-temperature deformation behavior and processing maps of a novel AlNbTi3VZr1.5 refractory high entropy alloy

Yu, Zhenxiang1,2,3; Xie, Bijun1,3; Zhu, Zhengwang3; Xu, Bin1,3; Sun, Mingyue1,3
Corresponding AuthorSun, Mingyue(mysun@imr.ac.cn)
2022-08-15
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume912Pages:11
AbstractHigh-temperature deformation behaviors of a nonequiatomic novel AlNbTi3VZr1.5 refractory high entropy alloy were studied. Hot compression tests were carried out at different temperatures ranging from 1100 to 1250 celcius and various strain rates from 0.001 to 1 s(-1). The true stress-true strain curves indicated obvious sharp drops in the flow stress after reaching peak stress. This may be caused by either dislocation unlocking from a substitutional solute atmosphere or destroying short-range ordered structures. Flow stress analysis was investigated by introducing the Arrhenius constitutive relation. The apparent activation energy (Q) for high-temperature deformation was calculated to be 228.1 kJ/mol. The processing maps show that the best processing window was determined at 1200-1250 ?degrees C and 10-0.75 to 1 s(-1). Detailed microstructure evolution characterization with EBSD analysis shows that the occurrence of discontinuous dynamic recrystallization along grain boundaries is the main softening mechanism of the AlNbTi3VZr1.5 RHEA during the hot compression deformation. The size and volume percentage of dynamically recrystallized grains increase as the Z parameter decreases. (C)& nbsp;2022 Published by Elsevier B.V.
KeywordRefractory high entropy alloy High-temperature deformation Stress-strain analysis Dynamic recrystallization Hot processing maps Weight
Funding OrganizationNational Key Research and Development Program ; National Natural Science Foundation of China ; Postdoctoral Science Foundation of China ; National Science and Technology Major Project of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; LingChuang Research Project of China National Nuclear Corporation ; Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association, CAS
DOI10.1016/j.jallcom.2022.165220
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program[2018YFA0702900] ; National Natural Science Foundation of China[52101061] ; National Natural Science Foundation of China[51774265] ; Postdoctoral Science Foundation of China[2020M681004] ; National Science and Technology Major Project of China[2019ZX06004010] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04000000] ; LingChuang Research Project of China National Nuclear Corporation ; Program of CAS Interdisciplinary Innovation Team ; Youth Innovation Promotion Association, CAS
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000799769400003
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/174186
Collection中国科学院金属研究所
Corresponding AuthorSun, Mingyue
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, Hefei 230026, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Yu, Zhenxiang,Xie, Bijun,Zhu, Zhengwang,et al.

High-temperature deformation behavior and processing maps of a novel AlNbTi3VZr1.5 refractory high entropy alloy

[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,912:11.
APA Yu, Zhenxiang,Xie, Bijun,Zhu, Zhengwang,Xu, Bin,&Sun, Mingyue.(2022).

High-temperature deformation behavior and processing maps of a novel AlNbTi3VZr1.5 refractory high entropy alloy

.JOURNAL OF ALLOYS AND COMPOUNDS,912,11.
MLA Yu, Zhenxiang,et al."

High-temperature deformation behavior and processing maps of a novel AlNbTi3VZr1.5 refractory high entropy alloy

".JOURNAL OF ALLOYS AND COMPOUNDS 912(2022):11.
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