On the spherical nanoindentation creep of metallic glassy thin films at room temperature

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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
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2017-02-08
卷号	685 页码:294-299
关键词	Nanoindentation Creep Metallic glassy film Strain rate sensitivity Shear transformation zone
ISSN号	0921-5093
中文摘要	Metallic 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.
类目[WOS]	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
研究领域[WOS]	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
关键词[WOS]	SHEAR TRANSFORMATION ZONE ; INDENTATION CREEP ; PLASTIC-FLOW ; DEFORMATION ; BEHAVIOR ; SIZE ; ALLOYS ; VOLUME
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000394190400034
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/60589]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 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.(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.