基于PID控制和铸造炉温补偿技术的AZ80镁合金组织及性能研究

Study on Microstructure and Properties of AZ80 Magnesium Alloy Based on PID Control and Foundry Furnace Temperature Compensation Technology

分别采用常规熔炼铸造与基于PID控制和炉温补偿技术对AZ80镁合金熔炼铸造进行了试验,并进行了试样显微组织和室温力学性能的测试与分析。结果表明:与常规熔炼铸造相比,基于PID控制和炉温补偿的熔炼技术制备的AZ80镁合金平均晶粒尺寸减小14μm,具有更佳的力学性能,其中抗拉强度增大22 MPa,屈服强度增大24 MPa,断后伸长率基本保持不变。

The melting casting test of AZ80 magnesium alloy was carried out by using conventional smelting casting and based on PID control and furnace temperature compensation respectively,and the microstructure and mechanical properties at room temperature were tested and analyzed.The results show that,compared with those of conventional smelting casting,the average grain size of AZ80 magnesium alloy prepared by experimental melting based on PID control and furnace temperature compensation decreases by 14μm,and better mechanical properties of AZ80 magnesium alloy are obtained,the tensile strength increases by 22 MPa,the yield strength increases by 24 MPa,and the elongation remains basically unchanged.