Remarkably high fracture toughness of HfNbTaTiZr refractory high-entropy alloy

doi:10.1016/j.jmst.2022.01.017

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	Remarkably high fracture toughness of HfNbTaTiZr refractory high-entropy alloy
	Fan, X. J.1,2; Qu, R. T.2; Zhang, Z. F.1,2
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2022-10-01
卷号	123 页码:70-77
关键词	High-entropy alloys BCC structure Fracture toughness J-integral
ISSN号	1005-0302
DOI	10.1016/j.jmst.2022.01.017
通讯作者	Qu, R. T.(rtqu@nwpu.edu.cn)
英文摘要	High-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.
资助项目	National Natural Science Foundation of China[51771205] ; LiaoNing Revitalization Talents Program[XLYC1808027]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000788134200008
资助机构	National Natural Science Foundation of China ; LiaoNing Revitalization Talents Program
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/172587]
专题	金属研究所_中国科学院金属研究所
通讯作者	Qu, R. T.
作者单位	1.Univ Sci & Technol China, Nano Sci & Technol Inst, Suzhou 215132, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 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.