Effect of extrusion temperature on superplasticity of PM-WE54

The effect of the extrusion temperature on the microstructure and mechanical behaviour of the powder metallurgy WE54 alloy has been investigated between 300 and 400 °C. After extrusion, the microstructure consists of magnesium grains and Mg14YNd2 particles located at grain boundaries. The alloy exhibits superplastic behaviour at high strain rates, attaining elongations to failure around 500%.