Phase Decomposition and Elevated Temperature Mechanical Properties of Zr-Ti-Nb-Ta-Sn Complex Concentrated Alloy Annealed at Intermediate Temperatures

doi:10.1007/s11661-022-06774-3

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	Phase Decomposition and Elevated Temperature Mechanical Properties of Zr-Ti-Nb-Ta-Sn Complex Concentrated Alloy Annealed at Intermediate Temperatures
	Zhou, Yongkang 1,2,3; Zeng, Shuai 1,2,3; Zhu, Yuhui 1,2,3; Zhao, Bowen 1,2,3; Li, Huan 1,2,3; Zhang, Hongwei 1,3; Zhang, Haifeng 1,3; Zhu, Zhengwang 1,3
刊名	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
	2022-08-26
页码	12
ISSN号	1073-5623
DOI	10.1007/s11661-022-06774-3
通讯作者	Zhu, Zhengwang(zwzhu@imr.ac.cn)
英文摘要	Refractory complex concentrated alloys (RCCAs) have attracted much attention due to their unique design concept and mechanical properties at elevated temperatures. The researchers found that the RCCAs are thermally metastable and could decompose in certain temperature ranges. At present, the phase stability of these alloy systems is not completely clear. In this work, the phase stability of single-phase body-centered cubic (BCC) Zr46Ti13Nb26Ta10.5Sn4.5 alloy annealing between 600 degrees C and 1000 degrees C was evaluated, and the effects of phase decomposition on high-temperature mechanical properties were studied. Annealing at 1000 degrees C, it is unstable and forms a second-phase precipitate with BCC structure (termed as BCC2). After annealing at 600 degrees C to 800 degrees C, a new Zr-Sn-rich hexagonal-closed-packed (HCP) phase was formed. At high temperatures (1000 degrees C to 1200 degrees C), the "fishbone"-shaped GB precipitates can hinder the sliding of GBs and the intragranular precipitates hinder dislocation movement causing a significant increase in strength. These results indicate that the high-temperature mechanical properties of RCCAs can be improved by optimizing the microstructure by tuning the phase stability, which sheds light on designing new RCCAs with high performance.
资助项目	National key research and development program[2018YFB0703402] ; National Natural Science Foundation of China[52074257] ; Chinese Academy of Sciences[ZDBS-LYJSC023]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000844930000001
资助机构	National key research and development program ; National Natural Science Foundation of China ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/175022]
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, CAS 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, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Yongkang,Zeng, Shuai,Zhu, Yuhui,et al. Phase Decomposition and Elevated Temperature Mechanical Properties of Zr-Ti-Nb-Ta-Sn Complex Concentrated Alloy Annealed at Intermediate Temperatures[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2022:12.
APA	Zhou, Yongkang.,Zeng, Shuai.,Zhu, Yuhui.,Zhao, Bowen.,Li, Huan.,...&Zhu, Zhengwang.(2022).Phase Decomposition and Elevated Temperature Mechanical Properties of Zr-Ti-Nb-Ta-Sn Complex Concentrated Alloy Annealed at Intermediate Temperatures.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,12.
MLA	Zhou, Yongkang,et al."Phase Decomposition and Elevated Temperature Mechanical Properties of Zr-Ti-Nb-Ta-Sn Complex Concentrated Alloy Annealed at Intermediate Temperatures".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE (2022):12.