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Achieving high ductility in the 1.7 GPa grade CoCrFeMnNi high-entropy alloy at 77 K
Sun, S. J.; Tian, Y. Z.; Lin, H. R.; Yang, H. J.; Dong, X. G.; Wang, Y. H.; Zhang, Z. F.
2019-01-07
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume740Pages:336-341
AbstractCoCrFeMnNi high-entropy alloys (HEAs) with partially recrystallized (PR) structure were fabricated by cold rolling and annealing. The microstructures were characterized and the tensile properties were tested at 77 K and 293 K, respectively. In contrast to the early necking at 293 K, an ultrahigh yield strength of 1692 MPa and a considerable uniform elongation of 10.3% were obtained at 77 K. The notable uniform elongation at 77 K can be attributed to the enhanced strain-hardening capability via introducing multiple deformation mechanisms in the recrystallized grains. This work provides a strategy to design high-strength high-ductility HEM for applications at cryogenic environments.
KeywordHigh-entropy alloy (HEA) Recrystallization Deformation twins Yield strength Elongation
Indexed BySCI
Language英语
WOS IDWOS:000453494500034
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81470
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Sun, S. J.,Tian, Y. Z.,Lin, H. R.,et al. Achieving high ductility in the 1.7 GPa grade CoCrFeMnNi high-entropy alloy at 77 K[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,740:336-341.
APA Sun, S. J..,Tian, Y. Z..,Lin, H. R..,Yang, H. J..,Dong, X. G..,...&Zhang, Z. F..(2019).Achieving high ductility in the 1.7 GPa grade CoCrFeMnNi high-entropy alloy at 77 K.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,740,336-341.
MLA Sun, S. J.,et al."Achieving high ductility in the 1.7 GPa grade CoCrFeMnNi high-entropy alloy at 77 K".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 740(2019):336-341.
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