Contribution of Sc doping to the growth and adhesion of alumina scale on AlCoCrFeNi high-entropy alloy

doi:10.1016/j.scriptamat.2024.116272

IMR OpenIR

	Contribution of Sc doping to the growth and adhesion of alumina scale on AlCoCrFeNi high-entropy alloy
	Ren, Hao 1; Chen, Dezhi 1; Gao, Xuefeng 2; Liu, Tong 1; Qin, Gang 3; Chen, Ruirun 1; Wu, Shiping 1; Guo, Jingjie 1; Fu, Hengzhi 1
通讯作者	Chen, Dezhi(chendezhi383@163.com) ; Chen, Ruirun(ruirunchen@hit.edu.cn)
	2024-11-01
发表期刊	SCRIPTA MATERIALIA
ISSN	1359-6462
卷号	252 页码:6
摘要	Equimolar AlCoCrFeNi high-entropy alloy (HEA) often experiences serious oxidation degradation despite its superior mechanical properties at elevated temperatures. Herein, we reveal that minor Sc addition can enhance the oxidation resistance of AlCoCrFeNi HEA at 1100 degrees C, and the microstructure and oxidation properties for (AlCoCrFeNi)100_xScx HEAs (Sc-0, Sc-0.1, Sc-0.5 and Sc-1) are evaluated. Except for the original A2 + B2 phases, the Laves phase is found with increasing Sc addition. Moderate Sc addition is beneficial for interface adhesion by lowering the driving force for scale spallation and enhancing the interface toughness, and excessive Sc addition, however, results in serious internal oxidation due to the generation of Sc2O3 stringers as the high diffusivity paths for inward O ions. It is also proved that enhancing the interface toughness is more beneficial to improve the oxidation resistance compared to reducing scale growth rate. Our results can offer guidance for designing advanced alloys with excellent oxidation resistance.
关键词	High entropy alloy Oxidation Sc doping Interface adhesion
资助者	National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Heilongjiang Postdoctoral Fund ; Interdisciplinary Research Foundation of HIT ; National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology
DOI	10.1016/j.scriptamat.2024.116272
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52425401] ; National Natural Science Foundation of China[51825401] ; China Postdoctoral Science Foundation[2023TQ0099] ; Heilongjiang Postdoctoral Fund[LBH-Z23132] ; Interdisciplinary Research Foundation of HIT ; National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology[6142909230101]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001269466000001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/188318
专题	中国科学院金属研究所
通讯作者	Chen, Dezhi; Chen, Ruirun
作者单位	1.Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Univ Hong Kong, Dept Mech Engn, Hong Kong 999077, Peoples R China
推荐引用方式 GB/T 7714	Ren, Hao,Chen, Dezhi,Gao, Xuefeng,et al. Contribution of Sc doping to the growth and adhesion of alumina scale on AlCoCrFeNi high-entropy alloy[J]. SCRIPTA MATERIALIA,2024,252:6.
APA	Ren, Hao.,Chen, Dezhi.,Gao, Xuefeng.,Liu, Tong.,Qin, Gang.,...&Fu, Hengzhi.(2024).Contribution of Sc doping to the growth and adhesion of alumina scale on AlCoCrFeNi high-entropy alloy.SCRIPTA MATERIALIA,252,6.
MLA	Ren, Hao,et al."Contribution of Sc doping to the growth and adhesion of alumina scale on AlCoCrFeNi high-entropy alloy".SCRIPTA MATERIALIA 252(2024):6.