Deformation behavior during tension in a Mg alloy containing 25% LPSO with different extrusion ratios monitored by neutron diffraction

Harjo, S.   ; Aizawa, Kazuya  ; Gong, W.   ; Kawasaki, Takuro   ; Yamasaki, Michiaki*; Kawamura, Yoshihito*

The MgZnY alloy, a magnesium alloy with a duplex microstructure consisting of an phase (Mg) and a long period stacking ordered phase (LPSO) of approximately 25 vol.%, showed high strength and high ductility after hot extrusion at 623 K. To understand tensile deformation behavior of each phase and effect of kinks to the strength of the alloy, we have performed in situ neutron diffraction measurements during tensile tests of the alloys in an as-cast condition and after extruded at 623 K with different extrusion ratios.