| Title |
Development of Textures and Microstructures during Compression in a Hot-Extruded AZ31 Mg Alloy |
| Authors |
정병조(Byung Jo Jung); 이명재(Myung Jae Lee); 박용범(Yong Bum Park) |
| DOI |
https://doi.org/10.3365/KJMM.2010.48.04.305 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
Mg alloy; EBSD; texture; twinning; extrusion |
| Abstract |
The development of textures and microstructures during plastic deformation in a hot-extruded AZ 31 Mg alloy was investigated using a compression test with such parameters as deformation temperature, strain rate. It was observed from true stress-strain curves that twinning involves changes of the flow stresses. In the early stages of deformation at temperatures lower than 200℃, the occurrence of twins resulted in a decrease of the work-hardening rate, which increased drastically at a true strain of -0.05. The evolution of the deformation textures were assessed with the aid of EBSD analyses in terms of the competition between twinning and slip activity. (Received November 26, 2009) |