Microstructural evolution and mechanical properties in Cu48Zr48Al4 bulk metallic glass composites induced by He+ ion irradiation

doi:10.1016/j.nimb.2018.05.003

	Microstructural evolution and mechanical properties in Cu48Zr48Al4 bulk metallic glass composites induced by He+ ion irradiation
	Wei YH ; Zhang K(张坤); Wei BC(魏炳忱); Zhao ZQ ; Yuan JM ; Wei BC(魏炳忱)
刊名	Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
	2018-05
卷号	428 页码:17-23
关键词	Ion irradiatIonmetallic Glass Compositesmartensitic transformatIonnanoindentatIon
ISSN号	0168-583X
DOI	10.1016/j.nimb.2018.05.003
英文摘要	The irradiation-induced phase transformation and mechanical property stability of the Cu48Zr48Al4 bulk metallic glass composites (BMGCs) were investigated. An obvious structural transformation occurred from the B2-CuZr phase to the B19′-CuZr and the B33-CuZr phases following irradiation, when the dose increased from 2.5 × 1017 ions/cm2 to 1.0 × 1018 ions/cm2. This change was accompanied by the changes of the maximum displacement per atomic (DPA) increasing from 21.5 dpa to 86 dpa. The mean surface roughness increased as the incident dose increased. The local exfoliation occurred at the maximal dose. The changes of mechanical properties were characterized via nanoindentation. The hardness and Young's modulus in the amorphous regions decreased as the dose increased. In contrast, the crystalline regions presented a distinct hardening effect, due to the appearance of the martensitic phases. The macroscopic hardness of the BMGCs obtained by the Vickers indentation instrument was basically unchanged after irradiation. The results suggested that these materials maintained a stable performance, because of the combined effects of hardening and softening. This study could aid the design of novel materials that are subjected to irradiation circumstance.
分类号	二类
语种	英语
WOS记录号	WOS:000440619000003
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/73155]
专题	力学研究所_国家微重力实验室
通讯作者	Wei BC(魏炳忱)
作者单位	1.Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China 2.School of Engineering Science, University of Chinese Academy of Sciences, Beijing 101408, China
推荐引用方式 GB/T 7714	Wei YH,Zhang K,Wei BC,et al. Microstructural evolution and mechanical properties in Cu48Zr48Al4 bulk metallic glass composites induced by He+ ion irradiation[J]. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms,2018,428:17-23.
APA	Wei YH,Zhang K,Wei BC,Zhao ZQ,Yuan JM,&Wei BC.(2018).Microstructural evolution and mechanical properties in Cu48Zr48Al4 bulk metallic glass composites induced by He+ ion irradiation.Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms,428,17-23.
MLA	Wei YH,et al."Microstructural evolution and mechanical properties in Cu48Zr48Al4 bulk metallic glass composites induced by He+ ion irradiation".Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 428(2018):17-23.