Mg合金化及固溶处理对ZL201组织和性能的影响

Influence of Different Solution Heat-treatment Processes on the Structures and Properties of Mg Alloyed ZL201

通过力学性能检测和金相显微镜观察,研究了不同固溶处理时间对6种成分Mg合金化ZL201组织和性能的影响。结果表明,在ZL201合金中加入1.5%~1.7%的Mg,可以得到细小且分布较均匀的显微组织,起到较好的强化作用。经过535℃×8 h和535℃×12 h固溶处理后,6种成分合金硬度有稍微降低,535℃×4 h处理后合金固溶强化,且Mg含量为1.7%能获得最好的固溶处理效果,从而为后续热处理工艺的确定及优化提供了参考。

The effect of solid solution treatment time on six kinds of Mg alloyed ZL201 was analyzed by mechanical property test and optical microscope.The results show that the ZL201 alloy with 1.5% to 1.7% of Mg could gain small and more uniform distributed fine microstructures.After 535 ℃ × 8h and 535 ℃ × 12 h solution treatment,the hardness of the six kinds of components was slightly lower,and the alloys got strengthened by solid solution treatment at 535 ℃ × 4 h.The alloy containing 1.7%Mg got the best effect of solution treatment.The result provides the reference for parameter selection and further optimization of heat-treatment process of this alloy.