Phase stability and compressive properties of low-density (Zr50Ti35Nb15)(100-x)Al-x high entropy alloys

doi:10.1016/j.intermet.2022.107622

CORC > 金属研究所 > 中国科学院金属研究所

	Phase stability and compressive properties of low-density (Zr50Ti35Nb15)(100-x)Al-x high entropy alloys
	Gao, K.3; Wang, J. Z.1,2; Meng, Y. H.1,2; Li, Y.2; Zhang, Y.3
刊名	INTERMETALLICS
	2022-09-01
卷号	148 页码:11
关键词	High entropy alloys Phase stability B2 structure Compressive properties
ISSN号	0966-9795
DOI	10.1016/j.intermet.2022.107622
通讯作者	Li, Y.(liyi@imr.ac.cn) ; Zhang, Y.(drzhangy@ustb.edu.cn)
英文摘要	In the present study, phase stability and compressive mechanical properties of the (Zr50Ti35Nb15)(100-x)Al-x (x = 0 to 30 at.%) high-entropy alloys were investigated. It was found that the crystalline structure of cast alloys changed from the initial disordered body-centered cubic (BCC) structure to an ordered body-centered cubic (B2) structure as the Al concentration was increased. Their microstructure and phase evolution after long-term annealing up to 1000 h at temperature ranging from 900 degrees C to 1100 degrees C were analyzed. Annealing has no obvious influence on the matrix phase of Zr50Ti35Nb15, which keeps BCC structure during all the annealing processes. For the alloys (Zr50Ti35Nb15)(80)Al-20 and (Zr50Ti35Nb15)(70)Al-30 with higher Al content, secondary phase (Al3Zr5) precipitates after annealing at 900 degrees C. With the increasing annealing temperature to 1000 degrees C or 1100 degrees C, there is a tendency that the amount of the Al3Zr5 phase decreases slightly, indicating that Al3Zr5 phase is unstable at high temperature. Accompanied by the phase change, there were also corresponding variations in compressive properties. The secondary phase precipitated in the (Zr50Ti35Nb15)(80)Al-20 and (Zr50Ti35Nb15)(70)Al-30 decreases the compressive plasticity, but has little influence on the yield strength. Meanwhile, the compressive properties of as-cast (Zr50Ti35Nb15)(90)Al-10 and (Zr50Ti35Nb15)(85)Al-15 were also tested to investigate the effect of Al content on the yield strength. Our findings provide a new insight in developing low-density high entropy alloys containing Al.
资助项目	National Key Research and Development Program of China[2017YFB0702003] ; National Natural Science Foundation of China[51871217] ; Guangdong Basic and Applied Basic Reuter Foundation[2019B1515120020] ; State Key Laboratory for Advanced Metals and Materials in the University of Science and Technology Beijing[2020Z-08] ; Funds for Creative Research Groups of China[51921001]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000833330900002
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Guangdong Basic and Applied Basic Reuter Foundation ; State Key Laboratory for Advanced Metals and Materials in the University of Science and Technology Beijing ; Funds for Creative Research Groups of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174641]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, Y.; Zhang, Y.
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 160016, Peoples R China 3.Univ Sci & Technol Beijing Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Gao, K.,Wang, J. Z.,Meng, Y. H.,et al. Phase stability and compressive properties of low-density (Zr50Ti35Nb15)(100-x)Al-x high entropy alloys[J]. INTERMETALLICS,2022,148:11.
APA	Gao, K.,Wang, J. Z.,Meng, Y. H.,Li, Y.,&Zhang, Y..(2022).Phase stability and compressive properties of low-density (Zr50Ti35Nb15)(100-x)Al-x high entropy alloys.INTERMETALLICS,148,11.
MLA	Gao, K.,et al."Phase stability and compressive properties of low-density (Zr50Ti35Nb15)(100-x)Al-x high entropy alloys".INTERMETALLICS 148(2022):11.