Al－Li合金淬火组织中的蜷线位错

Helical Dislocation in a Quenched Al-Li Alloy

用透射电镜观察了Ａｌ－Ｌｉ合金淬火组织的位错形态，对已提出的蜷线位错的形成机制进行了评述，并对所研究Ａｌ－Ｌｉ合金中蜷线位错的形成进行了分析．研究结果表明，Ａｌ－Ｌｉ合金中的蜷线位错主要是由受钉扎的位错和弯曲的位错在过饱和空位的作用下攀移形成的．

Helix dislocation in a quenched Al-Li alloy was observed using TEM,with its mechanism proposed in previous works discussed and the formation of belieal dislocations in the studied Al-li alloy was analyzed.The results show that the belieal dislocations were formed by climb of the pinned dislocations andcurved dislocations, caused by the existance of the super-saturated vacancies.