Effect of Isothermal Holding in Solid-Liquid Phase Region on Mg2Si Morphology in Hypereutectic Al-Si In Situ Composite
Mg2Si reinforced hypereutectic Al-Si in-situ composite was prepared and the effects of the isothermal holding temperature and time on Mg2Si in the composite were researched. The results showed that there were the important effects of holding temperature and time in the solid-liquid phase region of the Al-Si alloy on the size and morphology of Mg2Si. The size and morphology of Mg2Si became smaller and round with the rising of the holding temperature and prolonging of the holding time. The suitable technology in the test was obtained, in which when being held at 615°C for 300s, the size of Mg2Si decreased to 20.54μm and the shape factor of Mg2Si reached about 0.67.
Ran Chen, Dongye Sun and Wen-Pei Sung
Z. Liu et al., "Effect of Isothermal Holding in Solid-Liquid Phase Region on Mg2Si Morphology in Hypereutectic Al-Si In Situ Composite", Advanced Materials Research, Vols. 430-432, pp. 711-714, 2012