押出比の異なるLPSO-Mg合金の圧縮変形中のその場中性子回折測定

In situ neutron diffraction during compression of LPSO-Mg alloy with different extrusion ratio

Harjo, S.   ; 相澤 一也  ; 川崎 卓郎   ; Gong, W.   ; 山崎 倫昭*; 河村 能人*

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

MgZnY alloy is a magnesium alloy consisting an Mg phase as the matrix and a Long-Period Stacking Ordered (LPSO) phase with the volume fraction of about 25%. In situ neutron diffractions during compression at room temperature of MgZnY alloys in as-casted condition and hot-extruded conditions with the extrusion ratios of 5.0, 7.5 and 12.5 were conducted to elucidate the deformation mechanism after hot-extrusion. The evolutions of integrated intensities of diffraction peaks, lattice strains of individual constituent phases measured from neutron diffraction were plotted with the applied stress and strain, and twinning in Mg and kinking in LPSO phase were discussed.