JAUE2024-063: The Microstructure Evolution of Mg-Ag Alloy During High-Temperature Plane Strain Deformation

Abstract

Magnesium and Mg-Ag system alloys are known to be promising biomaterials, due to high specific strengths and biocompatibility. Because the limited numbers of slip systems were activated in HCP structure at room-temperature, their formability were low. To solve these problems, many research about improvement of room-temperature formability have been studied, but the microstructure development behaviors of Mg-Ag alloys were still limited. Therefore, this study was conducted to investigate the texture development behaviors of Mg-Ag alloy during high-temperature plane strain deformation. The Ag content of Mg-Ag alloy used in this study was 9.0wt%. Hot rolling was performed at a temperature of 673K with reduction ratio of 25%, and these specimens were annealed for 1H at 773K, followed by water quenching in room-temperature. High-temperature plane strain deformation was performed under temperature of 723K, with strain rate 5.0 x 10^-2s^-1 and strain from -0.4 to -1.0. As a result, it showed similar of the AZ61 alloy microstructure and texture, which had been studied previously, it was confirmed that the basal texture became stronger with increasing strains at high-temperature plane strain deformation.