研究了MGH754合金在二次再结晶过程中的组织和结构变化．结果表明，合金在热挤压状态具有细小的等轴晶组织，织构微弱，有利于进行形变加工；二次再结晶后，组织为粗大的柱状晶，且出现强烈的织构随着退火时间延长，｛110｝<001>和｛100｝<001>织构含量明显增加，而｛110｝<111>，｛110｝<113>和｛112｝<111>等织构的含量减少．合金棒材的纵向主要为<001>取向．
Microstructure and texture changes during secondary recrystallization of MGH754 alloy were studied. The results show that the as-extruded alloy has a fine equiaxed grain structure and weak texture. After secondary recrystallization annealing, coarse elon-gated grain structure parallel to the extrution dircction and strong texture components existed. The content of { 110} <001 > and { 100} <001> texture components increased, while {110} <111>, {110} <112> and { 112} <111> texture components decreased with the in-creasing of annealing time. The longitudinal direction of MGH754 bar is mainly <001> orientation.
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