HRTEM analysis of nanocrystallization during umaxial compression of a bulk metallic glass at room temperature

doi:10.1016/j.ultramic.2003.08.013

IMR OpenIR

	HRTEM analysis of nanocrystallization during umaxial compression of a bulk metallic glass at room temperature
	Deng, YF ; He, LL ; Zhang, QS ; Zhang, HF ; Ye, HQ
通讯作者	Ye, HQ()
	2004
发表期刊	ULTRAMICROSCOPY
ISSN	0304-3991
卷号	98 期号:2-4 页码:201-208
摘要	Nanocrystallization during deformation of metallic glass at room temperature has significant implications to understand its deformation mechanism. We present here direct high-resolution transmission electron microscopy (HRTEM) observations of nanocrystallization in a Zr(55)AI(10)Ni(5)Cu(30) bulk metallic glass (BMG) fractured by uniaxial compression at room temperature. The formed nanocrystallites are Zr2Cu, with the average diameter of less than 10 nm, and are distributed within the round-like regions of localized plastic deformation. We also show direct evidence of atomic neighbor distance increases associated with the shrinkage and broadening of diffused ring pattern from local deformed areas, which may enhance atomic mobility so that nanocrystallization occurred. Our results demonstrate that the origin of the room-temperature deformation of BMG can be attributed to the local atomic spacing increases induced by localization of plastic flow under uniaxial compression test. (C) 2003 Elsevier B.V. All rights reserved.
关键词	high-resolution transmission electron microscopy bulk metallic glass plastic deformation nanocrystallization
DOI	10.1016/j.ultramic.2003.08.013
收录类别	SCI
语种	英语
WOS研究方向	Microscopy
WOS类目	Microscopy
WOS记录号	WOS:000220821900014
出版者	ELSEVIER SCIENCE BV
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/81085
通讯作者	Ye, HQ
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Shenyang Normal Univ, Dept Phys, Shenyang 110034, Peoples R China
推荐引用方式 GB/T 7714	Deng, YF,He, LL,Zhang, QS,et al. HRTEM analysis of nanocrystallization during umaxial compression of a bulk metallic glass at room temperature[J]. ULTRAMICROSCOPY,2004,98(2-4):201-208.
APA	Deng, YF,He, LL,Zhang, QS,Zhang, HF,&Ye, HQ.(2004).HRTEM analysis of nanocrystallization during umaxial compression of a bulk metallic glass at room temperature.ULTRAMICROSCOPY,98(2-4),201-208.
MLA	Deng, YF,et al."HRTEM analysis of nanocrystallization during umaxial compression of a bulk metallic glass at room temperature".ULTRAMICROSCOPY 98.2-4(2004):201-208.