为表征2124铝合金的蠕变时效行为,在不同温度和应力状态下进行了一系列蠕变时效实验,并对时效过程中试样的微观组织与力学性能进行了观测.基于实验结果并结合对蠕变机制与时效强化的考虑,建立了适用于2124铝合金的蠕变时效的统一本构模型.模型不仅将宏观的本构关系、力学性能以及微观结构紧密联系起来,而且能够适用于不同的时效温度和应力状态.最后应用模型预测了另一温度下不同应力状态的蠕变应变曲线,与实验结果吻合很好.
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