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Al-Si合金是铝基铸造合金中最重要的一个系列,具有优异的铸造性能和良好的力学性能与物理化学性能,因而占铝件总产量的85%-90%。然而随着能源与环保的要求,目前商用Al-Si合金材料性能渐渐不能满足车辆发动机缸体、缸盖对其组织和综合力学性能越来越高的要求。从亚共晶铝合金遗传性的角度出发,系统地研究热速处理工艺参数中冷却速度对ZL114合金铸态组织、力学性能的影响,以及对第二相形态、尺寸、分布的影响,建立并优化ZL114合金热速处理工艺参数。
Al-Si alloy is the most important series of aluminum-based casting alloys, with excellent casting properties and good mechanical properties and physicochemical properties, which accounts for 85% -90% of the total aluminum production. However, with the requirements of energy and environmental protection, the performance of commercial Al-Si alloy materials can not meet the increasing requirements of the engine cylinder block and the cylinder head on the organization and mechanical properties. From the perspective of hypoeutectic aluminum alloy heredity, the influence of cooling rate on the as-cast microstructure and mechanical properties of ZL114 alloy, as well as the shape, size and distribution of the second phase were systematically studied. Optimization ZL114 alloy thermal processing parameters.