Research on deformation mechanism of AZ31 magnesium alloy during uniaxial compression

Abstract

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.

KEYWORDS:

• As-extruded AZ31 alloys
• mechanical behaviour
• texture evolution
• twinning
• non-basal slip

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by The National Nature Science Foundation of China (52275356), The Graduate Education Innovation Project in Shanxi (2021Y707), The Graduate Education Innovation Project in Shanxi (2021Y668).