(1. 中南大學(xué) 材料科學(xué)與工程教育部重點(diǎn)實(shí)驗(yàn)室，長(zhǎng)沙 410083；
2. 中國(guó)商用飛機(jī)有限公司，上海 200126)
摘 要: 綜述鋁合金時(shí)效過(guò)程中，用近代物理檢測(cè)分析技術(shù)表征和確定的微結(jié)構(gòu)從原子團(tuán)簇、GP區(qū)、亞穩(wěn)相到平衡相的結(jié)構(gòu)、大小及形貌析出序列演變過(guò)程；析出微結(jié)構(gòu)與基體形成的共格、半共格和非共格界面結(jié)構(gòu)；界面上析出第二相；論述通過(guò)空位、位錯(cuò)、外應(yīng)力及應(yīng)變、淬火冷卻速率、多級(jí)時(shí)效及微合金化等手段調(diào)控鋁合金微結(jié)構(gòu)及其演變?cè)恚X合金微結(jié)構(gòu)與性能調(diào)控技術(shù)，鋁合金時(shí)效調(diào)控技術(shù)與理論的發(fā)展；介紹鋁合金時(shí)效與微合金化調(diào)控性能的一些實(shí)例，為改善或提升高強(qiáng)鋁合金性能提供理論與技術(shù)參考。
關(guān)鍵字: 鋁合金；時(shí)效；微結(jié)構(gòu)；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
