Abstract
Tensile creep experiments were carried on AZ91D magnesium alloy and aluminum silicate short fiber-reinforced AZ91D magnesium matrix composite. The creep threshold stress of AZ91D composite depends on the Al atoms solute atmosphere, the bearing and transferring force of short fiber. Threshold stress decreases with temperature and increases with the short fiber volume fraction and the load transfer coefficient α, but the extent of increase drops with the amount of β-Mg17Al12 precipitation phase. The load transfer coefficient α characterizes the bearing and transferring capabilities of short fibers. As a result, the mathematical model of threshold stress in the magnesium matrix composite has been developed.
Published Version
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