Dislocation density evolution upon plastic deformation of Al-Pd-Mn single, quasicrystals

被引:57
作者
Schall, P
Feuerbacher, M
Bartsch, M
Messerschmidt, U
Urban, K
机构
[1] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany
[2] Max Planck Inst Mikrostrukturphys, D-06120 Halle, Germany
关键词
D O I
10.1080/095008399176607
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Dislocation density studies have been performed on icosahedral Al-Pd-Mn single quasicrystals after plastic deformation and after subsequent heat treatment. The deformation tests were carried out at a constant strain rate of 10(-5) s(-1) at temperatures between 695 and 820 degrees C. The heat treatments were performed at 730 degrees C, corresponding to one of the deformation temperatures. The development of the dislocation density during heat treatment and that during plastic deformation are compared. The experimental data are interpreted using a kinetic equation, which describes the evolution of the dislocation density during deformation. Numerical values for the dislocation multiplication constant and the annihilation rate for icosahedral Al-Pd-Mn are presented.
引用
收藏
页码:785 / 796
页数:12
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