弹性交互作用下直刃型位错的稳态构型及其滑移稳定性

从各向同性连续介质中直线位错之间的弹性交互作用能出发，推导具有任意Ｂｕｒｇｅｒｓ矢量夹角的两平行直刃型位错之间弹性交互作用的滑移力攀移力表达式。指出两平行直刃型位错的弹性交互作用存在三个滑移平衡位置：ｕ１＝１，ｕ２＝－１，ｕ３＝ｔｇφ，并确定了三滑移平衡位置成为滑移稳定平衡位置的条件，还得到滑移，攀移共同运动情况下两平行直刃型位错在弹性交互作用下的稳态构型，分别讨论了紧束缚，弱束缚情况下位滑移的稳

STABLE CONFIGURATIONS AND GLIDING STABILITYOF TWO PARALLEL STRAIGHT EDGE DISLOCATIONSUNDER ELASTIC INTERACTION

Based on the elastic interaction energy between straight dislocations in the isotropicsolid, the formulae described gliding and climbing forces produced by the elastic interaction between twoparallel straight edge dislocations with any angle between Burgers vectors have been obtained. The elasticinteraction has three gliding equilibrium positions: u1=1, u2=-1, u3=tg , and their stable conditionswere also determined. The stable dislocation configurations under gliding and climbing movements wereobtained. The stabilities of the dislocation gliding for strong bind and weak bind were discussed.