Significant structural relaxation in a Mo-O binary amorphous alloy

doi:10.1016/j.jnoncrysol.2019.03.008

IMR OpenIR

	Significant structural relaxation in a Mo-O binary amorphous alloy
	Duan, F. H.1,2; Pan, J.1; Lin, Y.1,2; Li, Y.1
通讯作者	Pan, J.(jiepan@imr.ac.cn) ; Li, Y.(liyi@imr.ac.cn)
	2019-06-15
发表期刊	JOURNAL OF NON-CRYSTALLINE SOLIDS
ISSN	0022-3093
卷号	514 页码:10-14
摘要	We revealed the significant structural relaxation with unprecedent hardness increment of 120% in an electro-deposited amorphous Mo-O alloy upon annealing, which is much higher than that in the conventional metallic glasses (< 15%). The relaxation kinetics was well described by a stretched exponential function with a Kohlrausch index of 0.51 and relaxation time of 115 s at 623 K. In addition, the significant structural relaxation was also reflected by a much higher creep resistance and smaller strain rate sensitivity after annealing. The significant hardness increment suggested that the as-deposited amorphous alloy has a highly disordered glassy state equivalently obtained by quenching at similar to 10(12)K s(-1). This was consistent with the structural observation that the as-deposited amorphous alloy has a low volume fraction (7%) of icosahedral-like medium range ordered (IMRO) clusters. Upon annealing, significant structural relaxation stemmed from the structural ordering, where the volume fraction of IMRO clusters increased to 19%.
关键词	Amorphous alloys Relaxation Nanoindentation Structural ordering Equivalent cooling rate
资助者	National Natural Science Foundation of China
DOI	10.1016/j.jnoncrysol.2019.03.008
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51871217] ; National Natural Science Foundation of China[51471165]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics ; Materials Science, Multidisciplinary
WOS记录号	WOS:000469890200002
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：3[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/321006/133804
专题	中国科学院金属研究所
通讯作者	Pan, J.; Li, Y.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Duan, F. H.,Pan, J.,Lin, Y.,et al. Significant structural relaxation in a Mo-O binary amorphous alloy[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2019,514:10-14.
APA	Duan, F. H.,Pan, J.,Lin, Y.,&Li, Y..(2019).Significant structural relaxation in a Mo-O binary amorphous alloy.JOURNAL OF NON-CRYSTALLINE SOLIDS,514,10-14.
MLA	Duan, F. H.,et al."Significant structural relaxation in a Mo-O binary amorphous alloy".JOURNAL OF NON-CRYSTALLINE SOLIDS 514(2019):10-14.