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A design of Zr-rich body-centered cubic structured refractory complex concentrated alloy with outstanding tensile strength and ductility

文献类型：期刊论文

作者Zhou, Yongkang1,2,3; Zeng, Shuai2,3; Li, Huan1,2; Zhang, Hongwei1,2; Zhang, Haifeng1,2; Zhu, Zhengwang1,2
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2023-05-25
卷号874页码:8
关键词Refractory complex concentrated alloy Annealing Phase decomposition Mechanical properties
ISSN号0921-5093
DOI10.1016/j.msea.2023.145091
通讯作者Zhu, Zhengwang(zwzhu@imr.ac.cn)
英文摘要Refractory complex concentrated alloys (RCCAs) have recently attracted much attention due to their superior properties. However, the lack of room temperature ductility and strain-hardening ability has become a major challenge to be addressed. In this work, a novel metastable Zr-rich RCCA of Zr45Ti15Nb30Ta10 (at.%) was designed and studied. The phase stability of the novel RCCA was investigated by annealing at 600, 800 and 1000 degrees C, and its influence on the mechanical properties was revealed by tensile testing. The as-cast samples show a dendritic body-center-cubic (BCC) microstructure with one crystalline lattice constant, which displayed a yield strength of 901 MPa and an elongation of 13.4%. When annealing at 600 and 800 degrees C, the Zr-rich BCC1 phase and Nb-Ta-rich BCC2 phase were identified to form. The samples annealed at 600 degrees C showed a yield strength of 913 MPa and an elongation of 10.4% but an enhanced strain hardening capacity with an average strain hardening exponent of similar to 0.88. This is attributed to the precipitated second phase hindering the movement of dislocations. The present work sheds light on developing novel RCCAs with high strength, high ductility, and considerable strain-hardening ability.
资助项目National Natural Science Foundation of China[52074257] ; Chinese Academy of Sciences[ZDBS-LY- JSC023]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001026017100001
出版者ELSEVIER SCIENCE SA
资助机构National Natural Science Foundation of China ; Chinese Academy of Sciences
源URL[http://ir.imr.ac.cn/handle/321006/178714]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhu, Zhengwang
作者单位1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Yongkang,Zeng, Shuai,Li, Huan,et al. A design of Zr-rich body-centered cubic structured refractory complex concentrated alloy with outstanding tensile strength and ductility[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,874:8.
APA Zhou, Yongkang,Zeng, Shuai,Li, Huan,Zhang, Hongwei,Zhang, Haifeng,&Zhu, Zhengwang.(2023).A design of Zr-rich body-centered cubic structured refractory complex concentrated alloy with outstanding tensile strength and ductility.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,874,8.
MLA Zhou, Yongkang,et al."A design of Zr-rich body-centered cubic structured refractory complex concentrated alloy with outstanding tensile strength and ductility".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 874(2023):8.

入库方式： OAI收割

来源：金属研究所

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