Effects of orientation and pre-deformation on velocity profiles of dislocation avalanches in gold microcrystals
Effects of orientation and pre-deformation on velocity profiles of dislocation avalanches in gold microcrystals
复制标题
取向和预变形对金微晶位错雪崩速度分布的影响
DOI:
10.1140/epjb/e2018-90586-5
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Maaß, Robert
中科院分区:
文献类型:
--
作者:
Sparks, Gregory;Maaß, Robert
AbstractWe report on the spatiotemporal dynamics of dislocation avalanches (crystallographic slip) in gold microcrystals with different orientations and also different initial dislocation densities. It is found that the size-integrated averaged velocity profiles have both orientation-dependent and initial-microstructure-dependent peak velocities and velocity decays. With increasing symmetry and apparent strain-hardening rate, the peak velocities decrease and the velocity of the average shape profile decays more slowly with time. These experimental results indicate the material-specific nature of collective dislocation rearrangements that underlie slip events with a net magnitude of a few to several hundred Burgers vectors in the studied microcrystals. Furthermore, we point toward sensitivity to filtering details that may significantly affect conclusions when comparing experiment with theory.Graphical abstract
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DOI:
10.1071/ph600316a
发表时间:
1960
期刊:
Australian Journal of Physics
影响因子:
--
作者:
L. Clarebrough;M. Hargreaves
通讯作者:
M. Hargreaves
影响因子:
8.6
作者:
Miguel, MC;Vespignani, A;Zapperi, S
通讯作者:
Zapperi, S
影响因子:
1.8
作者:
Brown, L. M.
通讯作者:
Brown, L. M.
DOI:
10.1016/j.msea.2006.01.169
发表时间:
2007-07-25
影响因子:
6.4
作者:
Chmelik, Frantisek;Klose, Frank B.;Lukac, Pavel
通讯作者:
Lukac, Pavel
影响因子:
9.4
作者:
Maass, R.;Derlet, P. M.
通讯作者:
Derlet, P. M.