During semisolid deformation of aluminium alloy 356, as the deformation strain increases, the deformation stress first increases to reach a peak value, then decreases to a minimum value, after which the stress increases towards the end of thedeformation. The deformation stress increases as the deformation rate increases at the beginning of the dejbrmation. The increase in the stress towards the end of the deformation is larger as the deformation rate decreases. The difference between thefirst peak stress and the minimum stress increases as the deformation rate increases. The stress decreases as the deformation temperature increases. The difference between the first peak stress and the minimum stress decreases as the segregation rateincreases. The increase in the stress towards the end of the deformation is larger as the segregation rate increases. The degree of segregation is the highest at the middle deformation temperature.
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