Cross-slip of twinning dislocations on crossing domain boundaries in ordered Ni3V
作者： G. Vanderschaeve , B. Escaig
DOI: 10.1080/01418618308244314
关键词: Crystal twinning 、 Crystallography 、 Materials science 、 Zigzag 、 Stress concentration 、 Activation energy 、 Domain (ring theory) 、 Partial dislocations 、 Alloy 、 Condensed matter physics 、 Deformation (engineering)
摘要: Abstract Zigzag propagation of deformation microtwins across the domain structure, as observed by electron microscopy in ordered Ni3V alloy, is shown to be due cross-slip partial dislocations via stair-rod mode (Fleischer 1959). Twin bands change direction preserve long-range order inside domains. The peculiarities interaction twinning with boundaries are studied, and an activation energy for such a mechanism evaluated. It that local stress concentration at microtwin tip makes easier.
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