(1. 中南大学 材料科学与工程教育部重点实验室，长沙 410083；
2. 中国商用飞机有限公司，上海 200126)
摘 要: 综述铝合金时效过程中，用近代物理检测分析技术表征和确定的微结构从原子团簇、GP区、亚稳相到平衡相的结构、大小及形貌析出序列演变过程；析出微结构与基体形成的共格、半共格和非共格界面结构；界面上析出第二相；论述通过空位、位错、外应力及应变、淬火冷却速率、多级时效及微合金化等手段调控铝合金微结构及其演变原理，铝合金微结构与性能调控技术，铝合金时效调控技术与理论的发展；介绍铝合金时效与微合金化调控性能的一些实例，为改善或提升高强铝合金性能提供理论与技术参考。
关键字: 铝合金；时效；微结构；相界面；性能
（1. School of Materials Science and Engineering, Central South University, Changsha 410083, China
2. Commercial Aircraft Corporation of China, Shanghai 200126, China）
Abstract:The ageing precipitates evolution determined and described with the modern physics test/analysis technology in high strength aluminum alloys was reviewed, which includes microstructure, size, distribution and morphology of clusters of atoms, Guinier-Preston (GP) zones, intermediate metastable precipitates and equilibrium phases, which can form and evolve during ageing due to spontaneous reducing of the system free-energy. The precipitates on the coherent/half-coherent dispersoid interfaces were compared with those on the incoherent interfaces. The microstructures can be adjusted with vacancy, dislocation, stress, strain, quench-cooling rate, multi-ageing and micro-alloying, the microstructure evolution principles were elucidated, and some ageing controlling technologies were shown. Some achievements were demonstrated in the improvement in the ageing and microalloying of high strength aluminum alloys as well.
Key words: aluminum alloy; ageing; microstructure; interface; property
