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从2A12铝合金的成分范围和冷轧板材的退火制度方面研究了提高2A12?O板材塑性的工艺,还研究了T42状态板材的淬火工艺,确定了最佳的热处理工艺参数.“,”The processes for increasing plasticities of 2A12-O sheets were studied in composition ranges and annealing systems of cold rolling sheetS. The quenching processes of 2A12-T42 sheets also were studied. The optimal process variables of heat treatment were given.