English

首 页 | EX4组简介 | 研究队伍 | 人才培养 | 研究方向 | 研究成果 | 实验设备 | 新闻通知 | 联系我们

 
 

成果分类
·2017
·2016
·2015
·科普
·2014
·2013
·2012
·2011
·2010
·2009
·2008
·2007
·2006
·2005
·2004
·2003
·2002
·2001
·2000
·1999
·1998
·课件下载
·2010Sino-German Workshop
 
 

当前位置: [首页] - [研究成果] - [2016] - Wang B, Shang B S, Gao X Q, et al. Understanding Atomic-Scale Features of Low Temperature-Relaxation Dynamics in Metallic Glasses[J]. The Journal of Physical Chemistry Letters, 2016, 7(23): 4945-4950.
资料名称:Wang B, Shang B S, Gao X Q, et al. Understanding Atomic-Scale Features of Low Temperature-Relaxation Dynamics in Metallic Glasses[J]. The Journal of Physical Chemistry Letters, 2016, 7(23): 4945-4950. [点击下载]
资料大小:1 KB
所属分类:2016
资料简介:
Being a key feature of a glassy state, low temperature relaxation has important implications on the mechanical behavior of glasses; however, the mechanism of low temperature relaxation is still an open issue, which has been debated for decades. By systematically investigating the influences of cooling rate and pressure on low temperature relaxation in the Zr50Cu50 metallic glasses, it is found that even though pressure does induce pronounced local structural change, the low temperature-relaxation behavior of the metallic glass is affected mainly by cooling rate, not by pressure. According to the atomic displacement and connection mode analysis, we further demonstrate that the low temperature relaxation is dominated by the dispersion degree of fast dynamic atoms rather than the most probable atomic nonaffine displacement. Our finding provides the direct atomic-level evidence that the intrinsic heterogeneity is the key factor that determines the low temperature relaxation behavior of the metallic glasses.
 
 
 
·中国科学院物理研究所 ·中国科学院 ·中国科学院研究生院 ·中国科协 ·科技部 ·环球商务网

版权所有: © 中国科学院物理研究所EX4组 中国科学院物理研究所EX4组

电话: 8610-82649880 邮件:dingdawei@aphy.iphy.ac.cn