Abstract
Stir-cast AZ91D magnesium alloy chips were reheated at semi-solid state and press-formed by employing a squeezecasting machine at semi-solid temperature. The structures and tensile properties of the formed specimen were investigated. Stir-cast chips show good fluidity and have little defects because of fine and spherical magnesium solid solution with a large amount of liquid phase. Tensile properties of the semi-solid press-formed specimen are, therefore, improved by the T6 heat treatment. The eutectic microstructure becomes finely by the rapid cooling, resulting in the increased 0.2% proof strength which exceeds the JIS-specified value. But tensile strength and elongation are less than the JIS-specified values. This is caused by oxide layer formed on the slurry surface during stirring.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
