Phase stability and microstructures of high entropy alloys ion   irradiated to high doses

doi:10.1016/j.jnucmat.2016.08.017

CORC > 北京大学 > 工学院

	Phase stability and microstructures of high entropy alloys ion irradiated to high doses
	Xia, Songqin ; Gao, Michael C. ; Yang, Tengfei ; Liaw, Peter K. ; Zhang, Yong
刊名	JOURNAL OF NUCLEAR MATERIALS
	2016
关键词	INDUCED STRUCTURAL-CHANGE HF-NB ALLOY MULTICOMPONENT ALLOYS MATERIALS CHALLENGES ELECTRON-IRRADIATION ATOMISTIC SIMULATIONS MECHANICAL-PROPERTIES STAINLESS-STEEL NUCLEAR-ENERGY AL ADDITION
DOI	10.1016/j.jnucmat.2016.08.017
英文摘要	The microstructures of AlxCoCrFeNi (x = 0.1, 0.75 and 1.5 in molar ratio) high entropy alloys (HEAs) irradiated at room temperature with 3 MeV Au ions at the highest fluence of 105, 91, and 81 displacement per atom, respectively, were studied. Transmission electron microscopy (TEM) and high-resolution TEM (HRTEM) analyses show that the initial microstructures and phase composition of all three alloys are retained after ion irradiation and no phase decomposition is observed. Furthermore, it is demonstrated that the disordered face-centered cubic (FCC) and disordered body-centered cubic (BCC) phases show much less defect cluster formation and structural damage than the NiAl-type ordered B-2 phase. This effect is explained by higher entropy of mixing, higher defect formation/migration energies, substantially lower thermal conductivity, and higher atomic level stress in the disordered phases. (c) 2016 Elsevier B.V. All rights reserved.; National Science Foundation of China [51471025]; 111 Project [B07003]; Cross-Cutting Technologies Program of National Energy Technology Laboratory under the RES [DE-FE-0004000]; US National Science Foundation [CMMI-1100080]; US Army Research Office [W911NF-13-1-0438]; SCI(E); EI; ARTICLE; drzhangy@ustb.edu.cn; 100-108; 480
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/450008]
专题	工学院
推荐引用方式 GB/T 7714	Xia, Songqin,Gao, Michael C.,Yang, Tengfei,et al. Phase stability and microstructures of high entropy alloys ion irradiated to high doses[J]. JOURNAL OF NUCLEAR MATERIALS,2016.
APA	Xia, Songqin,Gao, Michael C.,Yang, Tengfei,Liaw, Peter K.,&Zhang, Yong.(2016).Phase stability and microstructures of high entropy alloys ion irradiated to high doses.JOURNAL OF NUCLEAR MATERIALS.
MLA	Xia, Songqin,et al."Phase stability and microstructures of high entropy alloys ion irradiated to high doses".JOURNAL OF NUCLEAR MATERIALS (2016).