[P] P106~P129 Structural Materials

[P121] Mechanical property evaluation of worked grains in the αMg and LPSOphases of bimodally grained Mg-Y-Zn alloy extrusions

○Rintaro Mizuguchi¹, Soya Nishimoto¹, Yoji Mine¹, Koji Hagihara², Michiaki Yamasaki¹ (1. Kumamoto Univ., 2. Nagoya Inst. of Technol.)

Keywords:

Magnesium alloys,micro-tensile test,long-period stacking ordered strucure

Mg–Y–Zn alloys with a long-period stacking ordered (LPSO) phase exhibit excellent strength and ductility after extrusion. Micro-tensile tests clarified factors affecting mechanical properties of α-Mg and LPSO worked-grain regions. Results showed that initial dislocation density influences mechanical properties of both regions.