[G] Mechanical Properties of Materials and Sturucture

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)

[171] 530 MPa-class ultra-high yield strength LPSO-type magnesium cast-extruded alloys that surpasses extra-super-duralumin

○Yoshihito Kawamura¹, Zhonghao Qiu¹, Sｈinichi Inoue¹ (1. KUmamoto University)

Keywords:

high strength,kink strengthening,LPSO,extrusion,structural material

Cast-extruded LPSO-type Mg-3.0Ni-3.5Y-0.15Zr (at.%) alloy exhibited an elongation of 5.7% and an extremely high yield strength of 536 MPa. The α-Mg phase in this alloy has an MF structure, and it is believed that the high yield strength was achieved because both the LPSO phase and the α-Mg phase were kink-strengthened.