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On the spherical nanoindentation creep of metallic glassy thin films at room temperature
Zhang TH(张泰华); Ye JH; Feng YH(冯义辉); Ma Y; Ma, Y (reprint author), Zhejiang Univ Technol, Coll Mech Engn, Inst Micro Nanomech Testing Technol & Applicat, Hangzhou 310014, Zhejiang, Peoples R China.
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
2017-02-08
Volume685Pages:294-299
ISSN0921-5093
AbstractMetallic glassy thin films with eight kind of compositions were successfully prepared on Si substrate by magnetron sputtering. The room-temperature creep tests were performed at plastic regions for each sample relying on spherical nanoindetation. The creep deformations were studied by recording the total creep displacement and strain after 2000 s holding. More pronounced creep deformation was observed in the sample with lower glass transition temperature (T-g). Strain rate sensitivity (SRS) was then calculated from the steady-state creep and exhibited a negative correlation with increasing T-g. It is suggested that creep mechanism of the nano-sized metallic glass was T-g-dependent according to the demarcation of SRS values. Based on the obtained SRS shear transformation zone (STZ) size in each sample could be estimated. The results indicated that an STZ involves about 25-60 atoms for the employed eight samples and is strongly tied to T-g. The characteristic of STZ size in metallic glassy thin films was discussed in terms of applied method and deformation modes.
KeywordNanoindentation Creep Metallic Glassy Film Strain Rate Sensitivity Shear Transformation Zone
DOI10.1016/j.msea.2017.01.018
Indexed BySCI ; EI
Language英语
WOS IDWOS:000394190400034
WOS KeywordSHEAR TRANSFORMATION ZONE ; INDENTATION CREEP ; PLASTIC-FLOW ; DEFORMATION ; BEHAVIOR ; SIZE ; ALLOYS ; VOLUME
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China(11502235 ; 11672356)
DepartmentLNM实验平台
Classification一类
Ranking3
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60589
Collection非线性力学国家重点实验室
Corresponding AuthorMa, Y (reprint author), Zhejiang Univ Technol, Coll Mech Engn, Inst Micro Nanomech Testing Technol & Applicat, Hangzhou 310014, Zhejiang, Peoples R China.
Recommended Citation
GB/T 7714
Zhang TH,Ye JH,Feng YH,et al. On the spherical nanoindentation creep of metallic glassy thin films at room temperature[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2017,685:294-299.
APA 张泰华,Ye JH,冯义辉,Ma Y,&Ma, Y .(2017).On the spherical nanoindentation creep of metallic glassy thin films at room temperature.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,685,294-299.
MLA 张泰华,et al."On the spherical nanoindentation creep of metallic glassy thin films at room temperature".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 685(2017):294-299.
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