(中南大学 材料科学与工程学院，长沙 410083)
摘 要: 综述了铝锂合金研发历程及成分设计的发展阶段，重点阐述了Al-Cu-Li系铝锂合金中主合金化元素Cu、Li含量对时效析出相类型、力学性能及耐腐蚀性能的影响规律及影响机理，详细论述了微合金化元素Zr、Mn、Mg、Ag、Zn、稀土和In等对Al-Cu-Li系铝锂合金力学性能、耐腐蚀性能及微观组织包括再结晶、时效析出相类型与分布密度的影响。结合笔者课题组研究结果，提出了高强铝锂合金及耐腐蚀铝锂合金两种类型铝锂合金的成分设计思路。
关键字: 铝锂合金；合金化；微合金化；力学性能；腐蚀；微观组织
（School of Materials Science and Engineering, Central South University, Changsha 410083, China）
Abstract:The research process of Al-Li alloys and their composition design development stages are summarized. The influence and corresponding mechanism of contents of main alloying elements Cu and Li on the aging precipitate types, mechanical properties and corrosion resistance of Al-Cu-Li series alloys are emphatically expounded. The effects of micro-alloying elements Zr, Mn, Mg, Ag, Zn, Rare earth (RE) and Indium (In) on the mechanical properties, corrosion resistance and micro-structures, such as recrystallization, type and population density of aging precipitates, are discussed in detail. Based on the reported literatures and the research results of our research group, the composition design ideas of two kinds of Al-Li alloys, high strength Al-Li alloys and corrosion resistant Al-Li alloys, are proposed.
Key words: Al-Li alloy; alloying; micro-alloying; mechanical property; corrosion; microstructure
