THE INFLUENCE OF THE ECAP TEMPERATURE ON THE MICROSTRUCTURE AND THE MECHANICAL PROPERTIES OF THE AM60 MAGNESIUM ALLOY

摘要

The influence of the equal channel angular pressing (ECAP) temperature (150-350℃) on the microstructure of the magnesium alloy AM60 was investigated using transmission electron microscopy methods. It was demonstrated that the variation of the ECAP temperature resulted in significant changes of the grain size and the volume fraction of precipitates. Enhanced mechanical properties have been found and are discussed in terms of the grain size, the thermal stability of the precipitates and the actual concentration of solute in the matrix.