用Gleeble-1500型热模拟试验机对2E12铝合金进行了等温热压缩试验, 对热变形后的显微组织进行了透射电镜和场发射扫描电镜观察, 研究了2E12合金在不同条件下热变形过程中的动态软化机制及其显微组织演化规律。结果表明: 在变形温度不高于400 ℃时, 合金的主要动态软化机制为动态回复; 而当变形温度不低于450 ℃时, 其主要的动态软化机制为连续动态再结晶, 亚晶扭转合并为动态再结晶的主要形核机制, 且沿原始晶界优先形核。
所属栏目
国家重点基础研究发展规划项目(2005CB623705); 国家自然科学基金资助项目(50871123)
收稿日期
2010/9/222011/6/2
作者单位
黄裕金:中南大学材料科学与工程学院, 长沙 410083
陈志国:中南大学材料科学与工程学院, 长沙 410083
备注
黄裕金(1985-),男, 江西上饶人, 硕士研究生。
引用该论文:
HUANG Yu-jin,CHEN Zhi-guo.Dynamic Softening Mechanism of 2E12 Aluminum Alloy during Hot Deformation[J].Materials for mechancial engineering,2011,35(10):22～27
黄裕金,陈志国.2E12铝合金热变形过程中的动态软化机制[J].机械工程材料,2011,35(10):22～27
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