A direct comparison between climb and glide dislocation velocities in an icosahedral Al-Pd-Mn quasicrystal |
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| Authors: | F Mompiou † D Caillard |
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| Institution: | 1. Division of Engineering Mechanics , Jiangsu University , Zhenjiang, Jiangsu 212013, P. R. China chens@ujs.edu.cn;3. Division of Engineering Mechanics , Jiangsu University , Zhenjiang, Jiangsu 212013, P. R. China |
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| Abstract: | The formation and evolution of a dislocation dipole has been recorded during an in-situ heating experiment in a transmission electron microscope (TEM) at 740°C. The formation took place by pure climb in parallel planes but no subsequent annihilation was observed. Since annihilation was only possible by glide, this situation indicates that glide in two-fold planes is a considerably more difficult process than climb, at least at high temperature. |
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