中國有色金屬學報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 20 No. 3 March 2010 |
YANG Ming-bo(楊明波)3, ZHANG Jun-ping(張鈞萍)2
（1. National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China;
2. College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;
3. College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400050, China;）
Abstract:A new serve plastic deformation (SPD) including initial forward extrusion and subsequent shearing process (ES) was proposed. The influence of the ES forming on the grain refinement of the microstructure was researched. The components of ES forming die were manufactured and installed to Gleeble1500D thermo-mechanical simulator. The microstructure observations were carried out on the as-extruded rods (as-received) and ES formed rods. From the simulation results, ES forming can increase the cumulative strain enormously and the volume fraction of dynamic recrystallization. From the physical modeling results, the microstructures can be refined.
Key words: magnesium alloy; serve plastic deformation; dynamic recrystallization; microstructures refinement
