研究了固溶温度、固溶时间对真空高压压铸YL113合金缸体组织、性能和表面质量的影响。结果表明:对于YL113铝合金真空压铸件,在固溶时间15 min下固溶温度超过505℃时,以及在固溶温度490℃下固溶处理超过20 min时,压铸件内部组织易产生裂纹,铸件表面会出现鼓泡。对于YL113铝合金真空压铸件,高温短时固溶处理(固溶温度490℃,固溶时间15 min)可显著提高基体的显微硬度,可使基体的显微硬度比铸态下的提高51%,这主要归因于第二相的溶解和共晶Si相的显著粒化。 The effects of solution temperature and solution time on microstructure, properties and surface quality of YL113 alloy cylinder were studied. The results show that for the YL113 aluminum alloy die-casting, the internal structure of die-cast parts is easy to crack when the solution temperature exceeds 505 ℃ for 15 min and the solution treatment at 490 ℃ for more than 20 min, Casting surface will appear bubbling. For YL113 aluminum alloy die-castings, the high-temperature short-time solution treatment (solution temperature of 490 ℃, solution time of 15 min) can significantly increase the microhardness of the matrix, the microhardness of the matrix can be increased by as-cast %, Mainly due to dissolution of the second phase and significant granulation of the eutectic Si phase.