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| Effects of cold rolling deformation and baking treatment on microstructure and properties of CTP aluminum plate |
| JIA Guangze1,2, HUANG Yuanchun1,2,3, LIU Yu1,2, XIAO Zhengbing1,2 |
1. State Key Laboratory of High Performance and Complex Manufacturing, Central South University, Changsha 410083, China;
2. Light Alloy Research Institute, Central South University, Changsha 410083, China;
3. School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China |
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Abstract The 1060CTP aluminum plates were treated by different rolling systems and two different baking treatments of 220 ℃×10 min and 280 ℃×5 min. The effects of cold deformation and baking treatment on the microstructure, electrolytic corrosion properties and mechanical properties of CTP aluminum plates were studied through the polarization curves, microhardness, tensile property test, SEM and metallographic observation. The experimental results show that the grain size is larger than that of the first pass, and the larger the first sub-pressure, the finer the grain size. The aluminum plates have small and uniform crystal grains, and the corrosion and mechanical properties are better when the first reduction rate is 58.2%. The aluminum plate base is sensitive to the temperature during the baking process, and the high temperature baking treatment makes the strength of the aluminum base decrease sharply, while the elongation increase correspondingly. After baking at 280 ℃×5 min, the dimple size is more uniform, the depth is deeper, so the plasticity is better, and the resistance to printing is higher.
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Received: 27 July 2017
Published: 11 July 2019
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2018, Vol. 23 
