(合肥工业大学 材料科学与工程学院，合肥 230009)
摘 要: Al-Cu合金因其具有低密度、良好的强度和成型工艺性等优点，广泛应用于汽车、船舶、航空航天和建筑等领域。随着现代工业的不断发展，对铝合金强韧化、高温性能等方面提出更高的要求。通过添加合金元素，在铝合金中析出稳定的耐高温强化相，通过控制凝固过程、固溶和时效等热处理措施增强弥散强化作用，从而使基体得到稳定，使晶界得到强化。此外，考虑到大规模生产的成本，降低耐热铝合金的制备成本是十分必要的。本文以 Al-Cu 系耐热铝合金为中心，从微量元素的作用和热处理工艺两方面综述该系铝合金的研究进展，并提出了 Al-Cu 系耐热铝合金的发展方向。
关键字: 耐热铝合金；Al-Cu系合金；热处理；合金元素
（School of Materials Science and Engineering, Hefei University of Technology, Hefei 23009, China）
Abstract:Al-Cu alloy is widely used in automobile, shipbuilding, construction, aerospace and other fields because of its low density, good strength and forming process. With the continuous development of new technologies, higher requirements were put forward for aluminum alloys’ toughness and high-temperature performance. By adding alloying elements, a stable high temperature resistant strengthening phase is precipitated in the aluminum alloy, and the dispersion strengthening effect is enhanced by controlling the solidification process and heat treatment measures, so that the matrix is stabilized and the grain boundary is strengthened. In addition, considering the cost of large-scale production, it is necessary to reduce the production cost of heat-resistant aluminum alloys. This article focuses on the Al-Cu series heat-resistant aluminum alloys, discusses the research progress of this series of aluminum alloys from the effects of trace elements and heat treatment processes, and proposes the development direction of Al-Cu series heat-resistant aluminum alloys.
Key words: heat-resistant aluminum alloys; Al-Cu alloys; heat treatment; alloy elements
