Crossover from stochastic activation to cooperative motions of shear transformation zones in metallic glasses

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	Crossover from stochastic activation to cooperative motions of shear transformation zones in metallic glasses
	Jiao, W ; Sun, BA ; Wen, P ; Bai, HY ; Kong, QP ; Wang, WH
刊名	APPLIED PHYSICS LETTERS
	2013
卷号	103 期号:8
ISSN号	0003-6951
通讯作者	Wang, WH (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	We observe that the stress relaxation of metallic glasses below glass transition temperatures presents a universal double power-law decay behavior, indicating that relaxation dynamics transforms from a fast mode to a slow mode. This is attributed to a crossover from the stochastic activation to the self-organized cooperative motion of localized shear transformation zones. The phenomenon is further confirmed via strain recovery experiments and illustrated by a stochastic model. The results demonstrate that the plastic deformation exhibits the hallmarks of critical phenomenon, and offer a picture on the onset of deformation and evolution of relaxations in metallic glasses. (C) 2013 AIP Publishing LLC.
资助信息	NSF of China [51271195, 11274353]
语种	英语
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/56853]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Jiao, W,Sun, BA,Wen, P,et al. Crossover from stochastic activation to cooperative motions of shear transformation zones in metallic glasses[J]. APPLIED PHYSICS LETTERS,2013,103(8).
APA	Jiao, W,Sun, BA,Wen, P,Bai, HY,Kong, QP,&Wang, WH.(2013).Crossover from stochastic activation to cooperative motions of shear transformation zones in metallic glasses.APPLIED PHYSICS LETTERS,103(8).
MLA	Jiao, W,et al."Crossover from stochastic activation to cooperative motions of shear transformation zones in metallic glasses".APPLIED PHYSICS LETTERS 103.8(2013).