Abstract:The modification effect of bismuth (Bi) on in-situ-formed magnesium silicide (Mg 2 Si) reinforced magnesium-aluminium (Mg-Al) alloy is investigated using optical microscope, scanning electron microscope and X-ray diffraction. Processing of the in-situ composite was carried out through a stir casting technique. The size of Mg 2 Si is significantly refined and the optimal modification effect was obtained when the Bi content in the composite is 1.4%. A slight decrease in hardness values and increase in wear resis… Show more
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