Research on deformation mechanism of AZ31 magnesium alloy during uniaxial compression

The effects of the non-basal slip and twinning modes on the mechanical behaviour and texture evolution of as-extruded AZ31 alloys during uniaxial compression at room temperature have been investigated by experiments and Visco-Plastic Self Consistent (VPSC) modelling. The results show that the activation of pyramidal slip and {10-11} contraction twinning (CT) can reduce the strain hardening rate in the later stage of compression. And the prismatic slip has a significant effect on the strain hardening rate, the activation of {10-12} extension twinning (ET) can significantly reduce the strain hardening rate and the compressive yield strength. Increased activity of the {10-11} CT causes the pole density transfer to the normal direction (ND) in the {0002} pole figure.

Automated summary

The effects of non-basal slip and twinning modes on the mechanical behavior and texture evolution of AZ31 alloys during room temperature compression were investigated. Experimental and VPSC modeling results showed that pyramidal slip and {10-11} contraction twinning reduced the strain hardening rate in the later stage of compression. Prismatic slip had a significant effect on the strain hardening rate, while {10-12} extension twinning significantly reduced the strain hardening rate and compressive yield strength. Increased activity of {10-11} contraction twinning caused pole density transfer to the normal direction in the {0002} pole figure.