中國有色金屬學報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 30 No. 10 October 2020 |
（1. School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China;
2. Shaanxi Provincial Engineering Research Center for Magnesium Alloys, Xi’an University of Technology, Xi’an 710048, China）
Abstract:Compression tests were performed on the Mg-6Zn-0.5Ce (wt.%) alloy using a Gleeble-1500 thermo- mechanical simulator testing system at temperatures of 250, 300, 350 °C and strain rates of 0.001, 0.01, 0.1 s-1. The microstructure and texture evolution of the Mg-6Zn-0.5Ce alloy during hot compression were investigated by optical microscopy (OM) and electron backscattered diffraction (EBSD). The results showed that Zener-Hollomon parameters obtained from the deformation processes had a significant effect on the dynamic recrystallization and texture of the Mg-6Zn-0.5Ce alloy. The fraction of undynamically recrystallized (unDRXed) regions increased, and the dynamically recrystallized (DRXed) grain size decreased with increasing the Zener-Hollomon parameters. The texture intensity of the DRXed regions was weaker compared with that in the unDRXed regions, which resulted in a sharper texture intensity in the samples deformed with higher Zener-Hollomon parameters. The increase in recrystallized texture intensity was related to preferred grain growth.
Key words: Mg-Zn-Ce alloy; hot deformation; texture evolution; dynamic recrystallization
