氢促进局部塑性变形理论的发展趋势

张倩茹, 孙擎擎

Hydrogen Enhanced Localized Plasticity: A Critical Review

ZHANG Qianru, SUN Qingqing

图1 氢促进位错运动的原位电镜观察[22]与氢气团弹性屏蔽效应[16]

Fig.1 In-situ electron microscopy observation of hydrogen-enhanced dislocation motion[22] and elastic shielding of hydrogen atmosphere[16]: (a-f) images showing the dislocation pile-up at different hydrogen pressure (0、35、50、70、90、95 Torr) in 310S stainless steel, (g) after introducing H2, dislocation pile-up of 310S stainless steel moves from the black lines to the white lines, (h) the elastic force between dislocations of Nb varies with the dislocation spacing in the presence and absence of hydrogen