[P] P124~P138

[P133] Effect of pre-extrusion heat-treatment on microstructure evolution and mechanical properties of extruded Mg-Al-Y alloys

*ShengXiong Tang¹, Soya Nishimoto^1,2, Koji Hagihara³, Tsuyoshi Mayama¹, Michiaki Yamasaki^1,2 (1. Kumamoto Univ., 2. MRC, Kumamoto Univ., 3. Nagoya Inst. of Tech.)

Keywords:

Mg-Al-Y,extrusion,cluster-arranged layers (CAL),anisotropic mechanical property induced ductility (AMID),mechanical properties

we attempted to control the degree of CAL dispersion by controlling the pre-extrusion heat treatment and to form a bimodal structure that exhibits the AMID mechanism by extrusion processes.