两种铝合金的点焊组织模拟与试验分析

Resistance spot welding microstructure proportion simulation and experiment analysis on two aluminium alloys

AA5754和AA6082是两种具有不同强化机制的铝合金材料,在电阻点焊加热过程中,两种铝合金材料的组织会发生不同类型的转变.通过采用不同的计算模型,使用有限元软件对两种铝合金点焊后不同焊接组织的分布进行了模拟和预测.通过焊接试验研究,对两种铝合金的点焊组织的形态和分布进行了观察.结果表明,所采用的两种计算模型可以有效的预测和反映出两种铝合金点焊组织变化过程中的一些现象.仿真结果和试验结果都显示出两种铝合金的点焊组织有着明显不同的特征.

AA5754 and AA6082 aluminium alloy are two kinds of aluminius alloys with different strengthen modes. In the processing of the resistance spot welding, the microstructure of the two aluminium alloys changes in different types. By two different numerical models, the microsturcture proportion in the nuggets of the two aluminium alloys was simulated and pridicted. Conpared with the experimental results, the two simulation models are effective to predict some important phenomenas in terms of the phase transforma...