Glassy features of crystal plasticity
Glassy features of crystal plasticity
复制标题
晶体可塑性的玻璃特征
DOI:
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复制
发表时间:
2016
期刊:
影响因子:
--
通讯作者:
L. Laurson
中科院分区:
文献类型:
--
作者:
Arttu Lehtinen;G. Costantini;M. Alava;S. Zapperi;L. Laurson
Crystal plasticity occurs by deformation bursts due to the avalanchelike motion of dislocations. Here we perform extensive numerical simulations of a three-dimensional dislocation dynamics model under quasistatic stress-controlled loading. Our results show that avalanches are power-law distributed and display peculiar stress and sample size dependence: The average avalanche size grows exponentially with the applied stress, and the amount of slip increases with the system size. These results suggest that intermittent deformation processes in crystalline materials exhibit an extended critical-like phase in analogy to glassy systems instead of originating from a nonequilibrium phase transition critical point.
DOI:
10.1088/1742-5468/2015/08/p08009
发表时间:
2015-08
期刊:
Journal of Statistical Mechanics: Theory and Experiment
影响因子:
--
作者:
O. Kapetanou;D. Weygand;M. Zaiser
通讯作者:
O. Kapetanou;D. Weygand;M. Zaiser
影响因子:
56.9
作者:
Csikor, Ferenc F.;Motz, Christian;Zapperi, Stefano
通讯作者:
Zapperi, Stefano