Development of processing maps for as-cast ZE41A magnesium alloy

作     者：S. ANBU SELVAN S. RAMANATHAN R . KARTHIKEYAN B. K. RAGHUNATH 

作者机构：Department of Manufacturing Engineering Annamalai University Department of Mechanical Engineering Birla Institute of Technology and Sciences 

出 版 物：《中国有色金属学会会刊：英文版》 (Transactions of Nonferrous Metals Society of China)

年 卷 期：2010年第20卷第1期

页      面：22-27页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：加工图 镁合金 热加工温度 热变形行为 热压缩试验 动态再结晶 应变率 微观结构 

摘      要：The hot deformation behavior of as-cast ZE41A magnesium alloy was studied by employing both processing maps and microstructural observations. To obtain processing map, hot compression tests were performed over a range of strain rates (0.001-1.0 s-1) and temperatures (250-450 ℃). Power dissipation efficiency (η) and instability parameter [ξ (ε)] were evaluated and processing maps were developed for the strain of 0.5. The dynamic recrystallization (DRX) and instable zones were identified and validated through micrographs. The processing maps can be used to select optimum strain rates and temperatures for effective hot working of the material.