[G] Magnesium and Its Alloys

1:30 PM - 1:45 PM JST(4:30 AM - 4:45 AM UTC)

[120] Deformation mechanism of bimodal microstructure in kink-strengthened Mg-Al-Y alloy

○Zhexuan Lei¹, Han Chen¹, Daisuke Egusa¹, Tsuyoshi Mayama², Eiji Abe¹ (1. UTokyo, 2. Kumamoto Univ.)

Keywords:

Mg alloy,LPSO,bimodal,kink,micropillar

Extruded Mg-Al-Y shows an unconventional LPSO-bimodal structure: hard layered LPSO CG avoid typical softening, UFG provides high strength and good strain hardening, enabling high strength and good plasticity. Deformation mechanisms are probed via macro/micro mechanical tests and electron microscopy.