提高6082-T6铝合金扁棒材力学性能的试验研究

Experimental study on enhancement of mechanical properties of 6082-T6 aluminum alloy flat bar

针对6082-T6铝合金扁棒材力学性能较低不能满足用户使用要求,开展了调整其化学成分和生产工艺参数的试验研究。制定了内控的各元素含量范围;生产工艺中控制：铸锭均匀化温度565℃-575℃,保温8 h,出炉后强风＋水雾联合冷却;挤压系数11.4;淬火温度540℃,时效温度（175±5）℃,保温10 h。生产出了力学性能较高的符合用户要求的扁棒材。

The machanical properties of 6082-T6 aluminum alloy bar are low and go not accord with the demands of customers,so its chemical composition and production technology have to be adjusted.The element content limit has been drawn up as the internal standard of the producer.Ther production processes are decided as folows：homogenization temperature of the bar is 565℃-575℃ and 8 h holding,the are cooling plus water mist are used when the bars are put out of the furnace;extrusion coefficient is 11.4;the quenching temperature is 540℃;the ageing temperature is（175±5）℃ with 10 h holding.By this way the quality flat bar has been produced and its mechanical properties conform to the requirement of customers.