Abstract
Texture evolution in an Mg-Al-Ca alloy at varied levels of alkaline earth solute content and phase fraction of coarse intermetallic particles has been examined. Elevated temperature uniaxial compression tests have been conducted on thixomolded AXJ810 material in three different initial microstructural conditions. These conditions were selected to sample a spectrum of solute content and intermetallic particle phase fraction. Solute content alters the populations of dislocations present after deformation, similar to effects observed in rare earth-containing alloys. The presence of coarse intermetallic particles promotes dynamic recrystallization at lower strains. Additionally, the combination of a fine initial grain size and coarse particles decorating the grain boundaries results in a more diffuse deformation texture by creating large orientation spreads within individual grains, promoting a further weakened recrystallized texture.
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