By adding different amount of Al- Ti- C and Al- Ti – B in the eutectic Al- Si alloy,study both of which influences on the mechanical property of eutectic Al- Si alloy. Test shows that Al-Ti- C and Al- Ti- B could significantly improve the eutectic Al- Si alloy tensile strength and elongation at the normal temperature and 300℃. When the addition amount reaches 0. 1% by weight of the alloy liquid,the tensile strength and elongation of alloy are both peak value. If continue to increase the addition amount,the ...