Publisher： Trans Tech Publications
E-ISSN： 1662-8985|2015|1096|319-324
ISSN： 1022-6680
Source： Advanced Materials Research, Vol.2015, Iss.1096, 2015-05, pp. : 319-324
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Abstract
Automobile wheel of A356 alloy was cast by low pressure casting process. The effect of heat treatment process on microstructures and mechanical properties of A356 alloy cast was discussed. The results indicated that optimal parameters of heat treatment process for A356 alloy included solution temperature of 535°Cand holding time of 4.5hours, aging temperature of 145°Cand holding time of 4hours. Ultimate strength of A356 is 270MPa and elongation rate is 10%. Meanwhile, the microstructure has been apparently improved. The eutectic silicon particle became more spheroidal and distributed uniformly in matrix.
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