Dislocation cross-slip mechanisms in aluminum
Dislocation cross-slip mechanisms in aluminum
复制标题
铝中的位错交叉滑移机制
DOI:
10.1080/14786435.2011.602030
复制
发表时间:
2011-10
影响因子:
1.6
通讯作者:
Lu, Gang
中科院分区:
文献类型:
--
作者:
Jin, Congming;Xiang, Yang;Lu, Gang
We have systematically studied dislocation cross-slip in Al at zero temperature by atomistic simulations, focusing on the dependence of the transition paths and energy barriers on dislocation length and position. We find that for a short dislocation segment, the cross-slip follows the uniform Fleischer (FL) mechanism. For a longer dislocation segment, we have identified two different cross-slip mechanisms depending on the initial and final positions of the dislocation. If the initial and final positions are symmetric relative to the intersection of the primary and cross-slip planes, the dislocation cross-slips via the Friedel–Escaig (FE) mechanism. However, when the initial and final positions are asymmetric, the dislocation cross-slips via a combination of the FL and FE mechanisms. The leading partial folds over to the cross-slip plane first, forming a stair-rod dislocation at the intersection with which the trailing partial then merges via the FL mechanism. Afterwards, constrictions appear asymmetrically and move away from each other to complete the cross-slip via the FE mechanism.
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DOI:
10.1002/pssb.19650090123
发表时间:
1965-12
期刊:
April 1
影响因子:
--
作者:
G. Schottky;A. Seeger;V. Speidel
通讯作者:
G. Schottky;A. Seeger;V. Speidel
影响因子:
3.7
作者:
Torben Rasmussen;Karsten Wedel;T. Leffers;Ole Bøcker
通讯作者:
Torben Rasmussen;Karsten Wedel;T. Leffers;Ole Bøcker
影响因子:
8.6
作者:
C. Woodward;D. Trinkle;Louis G. Hector;D. Olmsted
通讯作者:
C. Woodward;D. Trinkle;Louis G. Hector;D. Olmsted
影响因子:
1.6
作者:
STROH, AN
通讯作者:
STROH, AN
影响因子:
15
作者:
R. Broudy
通讯作者:
R. Broudy