Effects of Sc addition on microstructure, phase evolution and mechanical properties of Al<sub>0.2</sub>CoCrFeNi high-entropy alloys

doi:10.1016/S1003-6326(23)66368

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	Effects of Sc addition on microstructure, phase evolution and mechanical properties of Al_0.2CoCrFeNi high-entropy alloys
	Sun, Yuan-wei 2; Wang, Zi-yi 2; Zhao, Xiang-jin 2; Liu, Zhong-li 2; Cao, Fu -hua 1
刊名	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
	2023-12-01
卷号	33 期号:12 页码:3756-3769
关键词	high-entropy alloy phase evolution microstructure grain refinement yield strength
ISSN号	1003-6326
DOI	10.1016/S1003-6326(23)66368
通讯作者	Sun, Yuan-wei(sunywytu@163.com) ; Zhao, Xiang-jin(zhaoxjworld@163.com)
英文摘要	l(0.2)CoCrFeNiSc(x) (x=0, 0.1, 0.2 and 0.3, molar fraction) alloys were prepared by arc melting. The effects of Sc addition on the microstructure, phase evolution and mechanical properties of Al0.2CoCrFeNiScx alloys were investigated. The results showed that Sc could refine grain size, change phase type and improve mechanical properties. The grain size of Al0.2CoCrFeNiSc0.3 alloy (8.5 mu m) was reduced by approximately 50.6% compared to that of Al0.2CoCrFeNiSc0.1 alloy (17.2 mu m). The crystal structure evolved from a single FCC phase to a mixed phase including two types of FCC phases and one type of BCC phase. The FCC phase mainly appeared in the regions of (Co, Cr, Fe)- rich dendrites and (Ni, Sc)-rich interdendrites; while the BCC phase was mainly located in the region of (Al, Ni)-rich interdendrites. The yield strength increased from 167 to 717 MPa as the x value in Al0.2CoCrFeNiScx alloy increased from 0 to 0.3, improved by 329.3%, which could be attributed to grain size strengthening, solid solution strengthening and phase evolution.
资助项目	Natural Science Foundation of Shandong Province, China[ZR2021QE136]
WOS关键词	TENSILE PROPERTIES ; WEAR-RESISTANCE ; AL ADDITION ; HALL-PETCH ; SCANDIUM ; FCC ; CORROSION ; BEHAVIOR ; RECRYSTALLIZATION ; STABILITY
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:001175303400001
资助机构	Natural Science Foundation of Shandong Province, China
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94510]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Sun, Yuan-wei; Zhao, Xiang-jin
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.Yantai Univ, Sch Nucl Equipment & Nucl Engn, Yantai 264005, Peoples R China
推荐引用方式 GB/T 7714	Sun, Yuan-wei,Wang, Zi-yi,Zhao, Xiang-jin,et al. Effects of Sc addition on microstructure, phase evolution and mechanical properties of Al_0.2CoCrFeNi high-entropy alloys[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2023,33(12):3756-3769.
APA	Sun, Yuan-wei,Wang, Zi-yi,Zhao, Xiang-jin,Liu, Zhong-li,&Cao, Fu -hua.(2023).Effects of Sc addition on microstructure, phase evolution and mechanical properties of Al_0.2CoCrFeNi high-entropy alloys.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,33(12),3756-3769.
MLA	Sun, Yuan-wei,et al."Effects of Sc addition on microstructure, phase evolution and mechanical properties of Al_0.2CoCrFeNi high-entropy alloys".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 33.12(2023):3756-3769.