Divergent strain acceleration effects in metallic glasses

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• 作者：Z. Lu^a ; X.N. Yang^b ; B.A. Sun^c ; Y.Z. Li^a ; K. Chen^b ; W.H. Wang^a ; H.Y. Bai^a ; ^{hybai@iphy.ac.cn}
• 关键词：Bulk metallic glass ; Relaxation ; Anelastic behavior ; Strain rate sensitivity ; Temperature-strain equivalence
• 刊名：Scripta Materialia
• 出版年：2017
• 出版时间：15 March 2017
• 年：2017
• 卷：130
• 期：Complete
• 页码：229-233
• 全文大小：883 K
• 卷排序：130

文摘

Relaxation is a key feature in glassy physics, and the strain-induced effects on relaxations in metallic glasses are of practical significance, yet still unclear. Through a contrastive combination of dynamical mechanical spectroscopy and linear-heating stress relaxation methods, we find that strain effectively facilitates the relaxation dynamics with divergent modulation behaviors in a wide temperature range for metallic glasses. Two loading modes are coupled with linear-heating, and we experimentally confirm the “temperature-strain equivalence”. Our results benefit for better understanding the unique effect of strain on relaxation and for providing guidance on applications of metallic glasses with improved performances at different temperatures.