Optimization method and preparation method of solid solution process of cerium-containing aluminum alloy

The invention discloses an optimization method and a preparation method of a solid solution process of a cerium-containing aluminum alloy, and belongs to the technical field of aluminum alloy heat treatment processes, the cerium-containing aluminum alloy comprises the following components in percentage by mass: 6%-9% of Cu, 0.75%-1.5% of Ce, 0.5%-1.2% of Mn, 0.05%-0.17% of Sc, 0%-0.34% of Zr, and the balance of Al and inevitable impurities, the solid solution process is optimized through the hardness change of the aluminum alloy, the high-temperature mechanical property of the aluminum alloy is improved, the tensile strength of the aluminum alloy can reach 202 MPa, and the long-term service capacity of the cast heat-resistant aluminum alloy at the high temperature is remarkably improved. 本发明公开了一种含铈铝合金的固溶工艺的优化方法及制备方法，属于铝合金热处理工艺技术领域，该含铈铝合金，按质量百分比计，包括Cu 6％～9％，Ce 0.75％～1.5％，Mn 0.5％～1.2％，Sc 0.05％～0.17％，Zr 0％～0.34％，余量为Al和不可避免的杂质，本发明通过铝合金的硬度变化对其固溶工艺进行优化，提高了该铝合金的高温力学性能，其抗拉强度可达202MPa，显著地提高了铸造耐热铝合金在高温下的长期服役能力。