Optimizing the Strength and Ductility of Al-6061 Alloy by Various Post-Rolling Ageing Treatments 2014-28-0022
The effect of different cold- rolling and cryo-rolling routes on the strength and ductility of Al-6061 alloy was thoroughly investigated. Rolling decreased the grain size and increased the strength according to the Hall-Petch relationship. However subjecting the samples to ageing at different temperatures and for different time period increased the strength and improved the ductility. The ductility was improved due to the rearrangement and even decrease in dislocation density due to recovery and recrystallization during ageing while the strength was maintained due to ageing. Evolution of microstructure was investigated by optical microscopy, scanning electron microscopy. Preliminary hardness measurements coupled with tensile tests indicate the improvement of both yield strength and ductility. The disparity in ultimate tensile strength, yield strength and the elongation to failure with different ageing temperatures and for different time period is determined and discussed.
Citation: Mishra, S., Priyadarshi, P., Kulkarni, K., Gurao, N. et al., "Optimizing the Strength and Ductility of Al-6061 Alloy by Various Post-Rolling Ageing Treatments," SAE Technical Paper 2014-28-0022, 2014, https://doi.org/10.4271/2014-28-0022. Download Citation
Sumeet Mishra, Piyush Priyadarshi, Kaustubh Kulkarni, N. P. Gurao, Prasad Phale, Suhail Mulla
Indian Institute of Technology, The Automotive Research Association of India
International Conference on Automotive Materials & Manufacturing 2014