通过对3004铝合金进行系列温度拉伸试验,研究了其应力-应变关系曲线上出现锯齿屈服的现象,并结合动态应变时效机制对其进行了分析.试验结果表明:在3004铝合金发生DSA的温区内,低温区出现的正常的PLC效应是由于合金中Mg原子与位错交互作用造成的;而在高温区,随着大量沉淀相的析出,出现了反常的PLC效应.
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