中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 20 No. 1 January 2010 |
（1. Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, 608002, India;
2. Department of Mechanical Engineering, Birla Institute of Technology and Sciences, Dubai）
Abstract: 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 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.
Key words: magnesium alloy; hot deformation; flow stress; processing map; dynamic recrystallization
