Abstract
The effect of different contents of Ti on mechanical properties in A356 alloy was researched in this study. The results reveal that the variation is not following the law that the more the content of Ti is, the better the tensile strength and hardness would be in the range of 0% to 7.5% Ti. However, the mechanical properties undergo improving first as the content of Ti is less than 0.3% and then reducing with the addition of Ti. Based on the different contents of Ti, the tensile fracture surfaces are studied to verify the effect of different contents of Ti, It is concluded that the variations of tensile fracture surfaces are in accordance with those of mechanical properties.
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