郁天其,闫宏,陈荣石

• 1:沈阳理工大学材料科学与工程学院
• 2:中国科学院金属研究所师昌绪先进材料创新中心
• 3:山东科技大学材料科学与工程学院

摘要(Abstract)：

为研究EV31镁合金的热变形行为，采用Gleeble 3800型热模拟试验机对其在不同温度与应变速率下进行热压缩试验，计算得到了EV31镁合金的热变形激活能，构建了其流变应力本构方程和热加工图，并通过扫描电镜(SEM)及电子背散射衍射(EBSD)技术分析其热变形过程中的组织演变。结果表明：当真应变为0.4时，EV31镁合金适宜的热加工区间是变形温度为390～500℃及应变速率为0.01～0.1 s~(-1)的区域内。在500℃下压缩时，合金的动态再结晶比400℃更加充分，能得到晶粒细小、织构较弱的显微组织。

关键词(KeyWords)： EV31镁合金;热变形;热加工图;动态再结晶

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52271107,51601193,51701218);; 山东省自然科学基金(ZR2021ME241);; 辽宁省自然科学基金(2020-MS-004)

作者(Author): 郁天其,闫宏,陈荣石

DOI: 10.13289/j.issn.1009-6264.2022-0459

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