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Effects of Sc addition on microstructure, phase evolution and mechanical properties of Al0.2CoCrFeNi high-entropy alloys

文献类型：期刊论文

作者Sun, Yuan-wei2; Wang, Zi-yi2; Zhao, Xiang-jin2; Liu, Zhong-li2; Cao, Fu -hua1; Cao FH(曹富华)
刊名TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
出版日期2023-12-01
卷号33期号:12页码:3756-3769
ISSN号1003-6326
关键词high-entropy alloy phase evolution microstructure grain refinement yield strength
DOI10.1016/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.
WOS关键词TENSILE PROPERTIES ; WEAR-RESISTANCE ; AL ADDITION ; HALL-PETCH ; SCANDIUM ; FCC ; CORROSION ; BEHAVIOR ; RECRYSTALLIZATION ; STABILITY
资助项目Natural Science Foundation of Shandong Province, China[ZR2021QE136]
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
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 Al0.2CoCrFeNi 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,&曹富华.(2023).Effects of Sc addition on microstructure, phase evolution and mechanical properties of Al0.2CoCrFeNi 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 Al0.2CoCrFeNi high-entropy alloys".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 33.12(2023):3756-3769.

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来源：力学研究所

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