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Extraordinary creep relaxation time in a La-based metallic glass
Zhang M(张猛); Chen Y(陈艳); Wei D; Dai LH(戴兰宏)
2018-02-01
发表期刊JOURNAL OF MATERIALS SCIENCE
卷号53期号:4页码:2956-2964
ISSN0022-2461
摘要The structural relaxation times of metallic glasses (MGs) are generally believed to decrease with increasing flow rate, also known as shear thinning. In this work, an extraordinary loading rate-independent creep relaxation time, in contrast to the decreasing Maxwell relaxation time with increasing loading rate, is observed for a La-based MG with pronounced Johari-Goldstein relaxation under nanoindentation. The Johari-Goldstein relaxation in the flow of MGs is suggested to be a form of local Newtonian flow and may be not crucial in shear thinning, whereas the main alpha relaxation is proposed to predominate in the shear thinning of MGs, based on the disparity between the creep relaxation time and the Maxwell relaxation time. These results improve the current understandings on the structural relaxation and its role in the shear thinning and plastic deformation of MGs.
DOI10.1007/s10853-017-1725-y
URL查看原文
收录类别SCI ; EI
语种英语
WOS记录号WOS:000416544500054
关键词[WOS]JOHARI-GOLDSTEIN RELAXATION ; SHEAR TRANSFORMATION ZONE ; NANOINDENTATION CREEP ; INDENTATION CREEP ; ROOM-TEMPERATURE ; BEHAVIOR ; DEFORMATION ; FLOW ; TRANSITION ; LIQUID
WOS研究方向Materials Science, Multidisciplinary
WOS类目Materials Science
项目资助者National Nature and Science Foundation of China [11472287, 11572324] ; Key Research Program of Frontier Sciences [QYZDJSSW-JSC011] ; Chinese Academy of Sciences [XDB22040302, XDB22040303] ; State Key Laboratory of Nonlinear Mechanics [LNM201718]
论文分区二类
力学所作者排名1
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文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77881
专题非线性力学国家重点实验室
作者单位1.[Zhang, M.] Jinan Univ, Inst Adv Wear & Corros Resistant & Funct Mat, Guangzhou 510632, Guangdong, Peoples R China
2.[Zhang, M.
3.Chen, Y.
4.Wei, D.
5.Dai, L. H.] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
6.[Chen, Y.
7.Wei, D.
8.Dai, L. H.] Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
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Zhang M,Chen Y,Wei D,et al. Extraordinary creep relaxation time in a La-based metallic glass[J]. JOURNAL OF MATERIALS SCIENCE,2018,53(4):2956-2964.
APA 张猛,陈艳,Wei D,&戴兰宏.(2018).Extraordinary creep relaxation time in a La-based metallic glass.JOURNAL OF MATERIALS SCIENCE,53(4),2956-2964.
MLA 张猛,et al."Extraordinary creep relaxation time in a La-based metallic glass".JOURNAL OF MATERIALS SCIENCE 53.4(2018):2956-2964.
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