その場中性子回折によるAZ31 Mg合金の圧縮変形に伴う双晶及び滑りの挙動

Roles of twinning and slip in AZ31 magnesium alloy studied by in situ neutron diffraction during compression

Gong, W.; 相澤 一也  ; Harjo, S.   ; 川崎 卓郎   ; 岩橋 孝明; 神山 崇*

Gong, W.; Aizawa, Kazuya; Harjo, S.; Kawasaki, Takuro; Iwahashi, Takaaki; Kamiyama, Takashi*

Activation of twinning in combined with basal slip has been considered to improve the mechanical properties of magnesium alloys. However, the quantitative estimation of twinning and slip properties are still uncompleted due to the limitation of experimental methods. Recently the convolutional multiple whole profile procedure has been utilized to determine twin frequencies as well as dislocation densities and crystallite size from the neutron diffraction profiles. In this present work, the compression behavior of a commercial AZ31 magnesium alloy was investigated by in situ neutron diffraction at TAKUMI, beam-line19 in J-PARC. The lattice strain, twinning fraction, twin frequencies and dislocation densities obtained by the analyzing of diffraction profiles were used to discuss the possible roles of twinning and slip in mechanical properties of magnesium alloys.