(合肥工業(yè)大學(xué) 材料科學(xué)與工程學(xué)院，合肥 230009)
摘 要: Al-Cu合金因其具有低密度、良好的強(qiáng)度和成型工藝性等優(yōu)點(diǎn)，廣泛應(yīng)用于汽車、船舶、航空航天和建筑等領(lǐng)域。隨著現(xiàn)代工業(yè)的不斷發(fā)展，對(duì)鋁合金強(qiáng)韌化、高溫性能等方面提出更高的要求。通過添加合金元素，在鋁合金中析出穩(wěn)定的耐高溫強(qiáng)化相，通過控制凝固過程、固溶和時(shí)效等熱處理措施增強(qiáng)彌散強(qiáng)化作用，從而使基體得到穩(wěn)定，使晶界得到強(qiáng)化。此外，考慮到大規(guī)模生產(chǎn)的成本，降低耐熱鋁合金的制備成本是十分必要的。本文以 Al-Cu 系耐熱鋁合金為中心，從微量元素的作用和熱處理工藝兩方面綜述該系鋁合金的研究進(jìn)展，并提出了 Al-Cu 系耐熱鋁合金的發(fā)展方向。
關(guān)鍵字: 耐熱鋁合金；Al-Cu系合金；熱處理；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
