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Significant structural relaxation in a Mo-O binary amorphous alloy
Duan, F. H.; Pan, J.; Lin, Y.; Li, Y.
2019-06-15
Source PublicationJOURNAL OF NON-CRYSTALLINE SOLIDS
ISSN0022-3093
Volume514Pages:10-14
AbstractWe 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%.
KeywordAmorphous alloys Relaxation Nanoindentation Structural ordering Equivalent cooling rate
Indexed BySCI
Language英语
WOS IDWOS:000469890200002
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80995
Collection中国科学院金属研究所
Recommended Citation
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.
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