【摘要】 研究了A356合金在不同时效工艺下的力学性能及微观组织。结果表明:A356合金在间断时效工艺(T6/6)下比传统T6处理工艺时的抗拉强度提高11%,硬度提高了12%,断后伸长率提高40%;合金中共晶硅球化、细小且分布更加均匀。更多还原

【Abstract】 Various ageing tempers on mechanical properties and microstructures of A356 alloy were investigated. The experiment results showed as the following: the ultimate tensile strength of A356 alloy in interrupted ageing is increased by about 11% than those in T6 temper, the hardness is improved by 12%, and the extension rate is increased by about 40%; the small and spherical eutectic silicon particles are distributed more evenly.更多还原