[P] P106~P129 Structural Materials

[P118] Microstructure and Room-Temperature Mechanical Properties of Mg-Sc-Y Aging Alloys via Two-Phase Microstructural Control

○Koki Otani¹, Daisuke Ando¹, Yuji Sutou^1,2 (1. Tohoku Univ.(Eng.), 2. Tohoku Univ.(AIMR))

Keywords:

Mg-Sc alloy,Lightweight structural material,Microstructural control,Age hardening

To achieve high strength and ductility in Mg alloys, Mg-Sc-Y aging alloys were investigated. Aging behavior and mechanical properties of bcc single-phase and hcp+bcc two-phase alloys were evaluated. The two-phase alloy achieved both high strength and excellent ductility due to hcp precipitation hardening and strain relaxation by retained hcp.