【摘要】 为了提高WE43镁合金塑性加工性能，对铸态WE43镁合金试样在不同温度（480、500、520、540℃）和保温时间（4、8、12、16 h）下进行均质化热处理。并采用金相和X射线衍射分析测试技术，分析均质化处理温度和时间对WE43镁合金组织的影响。结果表明，最佳均质化温度为520℃,保温时间为8 h。然后对均质化后的WE43镁合金在热模拟试验机上进行热压缩试验，试验温度为350～475℃,应变速率为0.001～1 s^-1,变形量为60%,获得了WE43镁合金的流变应力-应变曲线，基于流变应力-应变曲线，建立了WE43镁合金的本构模型。更多还原

【Abstract】 To enhance the plastic processing performance of WE43 magnesium alloy, the as-cast specimens were homogenized at temperature ranging from 480 ℃ to 540 ℃ and holding time of 4, 8, 12 and 16 h, respectively. The effects of the homogenizing temperature and time on the microstructure of the WE43 magnesium alloy were investigated by using metallographic and X-ray diffraction analysis testing techniques. The results show that the optimal homogenizing temperature is 520 ℃ and the holding time is 8 h. Then hot compression test was carried out on the homogenized WE43 magnesium alloy by using a thermal simulation testing machine with deformation temperatures of 350-475 ℃, strain rates of 0.001-1 s^-1 and deformation of 60%, the flow stress-strain curves of the tested alloy are obtained, based on which the constitutive model for WE43 magnesium alloy is established.更多还原