The semi-solid compression deformation behavior of the AZ91D alloy with non-dendritic
structure, which was obtained under the semi-solid isothermal treatment condition of 570°C×60min,
was studied by means of Gleeble-1500 thermal-mechanical simulator. When the compression strain
was lower than 0.7, along with the compression strain increasing, the compression stress firstly
increased rapidly, then decreased rapidly, and finally kept a constant stress level gradually. Under the
condition of different deformation temperatures and deformation rates, the maximum compression
stress was obtained simultaneously when the compression strain value was 0.025 approximatively.
Furthermore, when the deformation rate kept a constant, the compression stress decreased along with
the deformation temperature increasing, and when the deformation temperature kept a constant, the
compression stress increased along with the deformation rate increasing.
Effect of compression deformation on the distortion energy and semi-solid microstructure of Mg-6Al-0.9Gd alloys