WE43镁合金的均质化处理及本构模型建立
Homogenization treatment and establishment of constitutive model for WE43 magnesium alloy
段兴旺 1贾悦 1陈迎庆 1车鑫1
作者信息
- 1. 太原科技大学材料科学与工程学院,山西太原 030024
- 折叠
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.
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.
关键词
WE43镁合金/均质化/热压缩/本构模型Key words
WE43 magnesium alloy/homogenization/hot compression/constitutive model引用本文复制引用
基金项目
山西省基础研究计划(202103021223298)
山西省基础研究计划(202203021211191)
出版年
2024
NETL
NSTL
万方数据