标题:Abnormal sub-T-g enthalpy relaxation in the CuZrAl metallic glasses far from equilibrium
作者:Hu, Lina; Yue, Yuanzheng; Zhang, Chunzhi
作者机构:[Hu, Lina; Yue, Yuanzheng; Zhang, Chunzhi] Shandong Univ, Minist Educ, Key Lab Liquid Struct & Hered Mat, Jinan 250061, Peoples R China.; [Yue, Yuan 更多
通讯作者:Hu, LN
通讯作者地址:[Hu, LN]Shandong Univ, Minist Educ, Key Lab Liquid Struct & Hered Mat, Jinan 250061, Peoples R China.
来源:APPLIED PHYSICS LETTERS
出版年:2011
卷:98
期:8
DOI:10.1063/1.3556659
摘要:The sub-T-g enthalpy relaxation in glasses far from equilibrium (i.e., hyperquenched glasses) is usually manifested as a monotonic increase in both the onset temperature and the extent of enthalpy recovery with increasing the annealing temperature. Here we report an abnormal three-steplike relaxation pattern in hyperquenched Cu45Zr45Al10 and Cu48Zr48Al4 glasses below T-g, i.e., the usual monotonic increase is inverted when the annealing temperature increases to a critical value. This abnormal relaxation pattern could be attributed to the high extent of chemical heterogeneity in the CuZrAl supercooled liquids, and present a thermodynamic evidence for the dynamic fragile-to-strong transition in metallic glass-forming liquids. (C) 2011 American Institute of Physics. [doi:10.1063/1.3556659].
收录类别:SCOPUS;SCIE
WOS核心被引频次:18
Scopus被引频次:19
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-79952075317&doi=10.1063%2f1.3556659&partnerID=40&md5=12acde05f047602f5864e8a86a5f50cf
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