Effect of Temperature on the Dynamic Compressive Properties of Magnesium Alloy AZ91D

摘要

Magnesium alloys are getting more and more attraction towards their use in automobiles, planes, protective structures, electronics and supports for being lightweight and yet presenting excellent mechanical prosperities. In all types of vehicles, lightweight and stronger materials are needed to reduce the fuel consumption and toxic emissions. Due to low density, high specific strength and high specific stiffness, magnesium alloys have been in use for variety applications in defense, supports and electronics. In present study, the effect of temperature variation has been investigated for magnesium alloy AZ91D at high strain rates. The temperature is varied in the range from -30℃ to 200℃ at a strain rate of 10~3 s~(-1). Lower stresses and larger strains to peak compressive stresses are observed with increasing temperature. At higher strain rate, the effect of temperature on the alloy's hardening behaviour is less significant.