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在不同速率与压下量下热轧制备5052/AZ31/5052镁铝复合板。并选取在各速率下的最大压下量的复合板进行200℃×1 h退火,以消除残余应力。分析了不同轧制参数下镁铝复合板的结合状况,观察了组元板及层界面处的微观组织,阐明了织构与微观组织之间的关系。结果表明:随轧制速率与压下量的提高,复合板的结合程度提高,晶粒尺寸细化,塑性下降。镁层(c+a)锥面滑移系被大量激活,织构强度降低,再结晶程度增加。退火后,镁铝层界面处没有出现中间层化合物的。
Hot Rolling 5052 / AZ31 / 5052 Magnesium Aluminum Composite Panels at Different Rates and Depressions. And select the maximum reduction at each rate of the composite plate 200 ℃ × 1 h annealing to eliminate residual stress. The bonding status of Mg-Al composite plates under different rolling parameters was analyzed. The microstructure at the interface of the component plates and layers was observed, and the relationship between the microstructure and microstructure was clarified. The results show that with the increase of rolling rate and reduction, the bonding degree of the composite plate increases, the grain size is refined and the plasticity decreases. The (c + a) taper slip system is activated in a large amount, the texture strength decreases and the degree of recrystallization increases. After annealing, there is no interlayer compound at the Mg-Al layer interface.