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Remarkably high fracture toughness of HfNbTaTiZr refractory high-entropy alloy
Fan, X. J.1,2; Qu, R. T.1; Zhang, Z. F.1,2
Corresponding AuthorQu, R. T.(rtqu@nwpu.edu.cn)
2022-10-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume123Pages:70-77
AbstractHigh-entropy alloys (HEAs) with face-centered cubic (FCC) phase such as CoCrFeMnNi or CoCrNi generally exhibit ultra-high fracture toughness but relatively low strength. In contrast, body-centered cubic (BCC) HEAs often display higher strengths, but the few reports on fracture toughness measurement demonstrate low toughness values. Here we show that the BCC HfNbTaTiZr refractory HEA, which possesses a combination of high strength, good tensile ductility and excellent high-temperature properties, also exhibits a remarkably high fracture toughness. By using the "single specimen" compliance method for J-integral measurement according to the ASTM E1820-17 standard, its fracture toughness K-JIC was experimentally determined to be 210 MPa m(1/2), which renders this HEA among the toughest metallic materials. The excellent damage tolerance makes the HEA promising for applications as high-temperature structural materials such as in aerospace field. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordHigh-entropy alloys BCC structure Fracture toughness J-integral
Funding OrganizationNational Natural Science Foundation of China ; LiaoNing Revitalization Talents Program
DOI10.1016/j.jmst.2022.01.017
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51771205] ; LiaoNing Revitalization Talents Program[XLYC1808027]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000788134200008
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/172588
Collection中国科学院金属研究所
Corresponding AuthorQu, R. T.
Affiliation1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Nano Sci & Technol Inst, Suzhou 215132, Peoples R China
Recommended Citation
GB/T 7714
Fan, X. J.,Qu, R. T.,Zhang, Z. F.. Remarkably high fracture toughness of HfNbTaTiZr refractory high-entropy alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,123:70-77.
APA Fan, X. J.,Qu, R. T.,&Zhang, Z. F..(2022).Remarkably high fracture toughness of HfNbTaTiZr refractory high-entropy alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,123,70-77.
MLA Fan, X. J.,et al."Remarkably high fracture toughness of HfNbTaTiZr refractory high-entropy alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 123(2022):70-77.
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