On the critical thickness for non-localized to localized plastic flow transition in metallic glasses: A molecular dynamics study

On the critical thickness for non-localized to localized plastic flow transition in metallic glasses: A molecular dynamics study
复制标题

关于金属玻璃中非局部塑性流动转变为局部塑性流动转变的临界厚度:分子动力学研究

DOI:
10.1016/j.scriptamat.2015.12.012
复制
发表时间:
2016-03
期刊:
影响因子:
6
通讯作者:
Jiang J. Z.
Jiang J. Z.
中科院分区:
材料科学1区
文献类型:
--
作者:
Zhong C.;Zhang H.;Cao Q. P.;Wang X. D.;Zhang D. X.;Ramamurty U.;Jiang J. Z.

文献摘要

参考文献

被引文献

相似文献

采用分子动力学模拟方法研究了CuxZr100-x(x= 20、40、50、64和80 at)的拉伸行为随试样厚度的变化规律。%)金属玻璃(MG)薄膜,特别关注临界厚度,tc,在此以下会发生非局部塑性流动。模拟结果表明,虽然所有合金都发生了转变,但这对成分很敏感。我们通过假设在塑性变形开始时储存在样品中的应变能必须足以形成剪切带来使其合理化。发现其组分依赖性与原子级塑性变形事件的平均活化能有关。
Molecular dynamics simulations were employed to investigate the specimen thickness-dependent tensile behavior of a series of CuxZr100-x(x= 20, 40, 50, 64 and 80 at.%) metallic glass (MG) films, with a particular focus on the critical thickness,tc, below which non-localized plastic flow takes place. The simulation results reveal that while the transition occurs in all the alloys examined,tcis sensitive to the composition. We rationalizetcby postulating that the strain energy stored in the sample at the onset of plastic deformation has to be sufficient for the formation of shear bands. The composition-dependence oftcwas found to correlate with the average activation energy of the atomic level plastic deformation events.
DOI: 10.1016/0001-6160(79)90055-5
发表时间: 1979-01-01
期刊: ACTA METALLURGICA
影响因子: --
作者:
ARGON, AS
通讯作者: ARGON, AS
DOI: 10.1002/adma.201002148
发表时间: 2011-01-25
期刊: ADVANCED MATERIALS
影响因子: 29.4
作者:
Kumar, Golden;Desai, Amish;Schroers, Jan
通讯作者: Schroers, Jan
DOI: 10.1103/physrevb.83.180201
发表时间: 2011-05-04
期刊: PHYSICAL REVIEW B
影响因子: 3.7
作者:
Chen, Chang Qiang;Pei, Yu Tao;De Hosson, Jeff Th M.
通讯作者: De Hosson, Jeff Th M.
金属合金中与尺寸相关的非局部变形
DOI: 10.1016/j.scriptamat.2015.01.015
发表时间: 2015-05
期刊: SCRIPTA MATERIALIA
影响因子: 6
作者:
Zhong C.;Zhang H.;Cao Q. P.;Wang X. D.;Zhang D. X.;Jiang J. Z.
通讯作者: Jiang J. Z.
DOI: 10.1006/jcph.1995.1039
发表时间: 1995-03-01
影响因子: 4.1
作者:
PLIMPTON, S
通讯作者: PLIMPTON, S