测试7A55铝合金在常规RRA和连续RRA处理过程中不同状态点的抗拉强度和电导率,并通过TEM观察7A55铝合金在常规RRA处理和连续RRA过程中的微观组织演变.结果表明,7A55铝合金无论采用常规RRA处理还是连续RRA处理,在高温回归过程中,晶内析出大量与基体不共格相(大量η'相和一些η相),同时晶界η相严重粗化并出现无沉淀析出带,电导率有大幅上升.另外,采用连续RRA处理工艺,1级时效后在适当的升温速度下,直接升温至回归温度进行回归处理,可以获得接近第1级时效的强度和38.1%IACS的电导率.
参考文献
| [1] | Cina B .[P].US Patent:3856584,1974. |
| [2] | John Liu .[P].US Patent:5108520,1992. |
| [3] | Rajan K;Wallance W;Beddoes J C .[J].Materials Science,1982,17:2817. |
| [4] | Danh N C;Rajan K;Wallace W .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1983,149(09):1843. |
| [5] | Ungar Lendvai T;Kovacs J .[J].Aluminium,1979,55(10):663. |
| [6] | Tanaka M;Henon C.[J].Materials Science Forum,2006(519-521):345. |
| [7] | Park K;Ardell A J .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1984,15:1531. |
| [8] | Karma M;Araki I;Cui Q .[J].Materials Science and Technology,1994,10:599. |
| [9] | Wallace W;Beddoes J C;Malherbe M C .[J].Canadian Aeronautics and Space Journal,1981,27(03):222. |
| [10] | Islam M U;Wallace W .[J].Metals and Technology,1983,10:386. |
| [11] | Christodoulou L;Flower H M .[J].Acta Metallurgica,1980,28:481. |
| [12] | Guyot P;Cottignies L .[J].Acta Materialia,1996,44:4161. |
| [13] | Starink M J;Li X M .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2003,34:899. |
| [14] | Ning Ailin;Liu Zhiyi .[J].Transactions of Materials and Heat Treatment,2008,4:108. |
| [15] | Dorward R C .[J].Materials Science and Technology,1999,15:1133. |
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