Enhancement of Mechanical Properties by Cold-Rolling of Al6061. (2018)

• Record Type: Journal Article
• Authors: Mishra, Vagish D.; Rao, Balkrishna C.; Murthy, H.
• Is Part Of: Materials today. Volume 5:Number 2(2018)Part 2
• Page Start: 8263
• Page End: 8270
• Publication Date: 2018
• Subjects: Al6061 -- Cold-rolling -- Artificial peak-ageing -- Severe plastic deformation -- mechanical properties; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2017.11.517
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: In the present effort, enhancement of mechanical properties of Aluminium alloy, Al6061, due to cold-rolling is compared with that due to peak-ageing. Heat treatable Al6061 was cold-rolled with different pre-rolling conditions. Since different peak-ageing conditions are given in literature, a systematic study was conducted to determine the peak-ageing conditions for the procured aluminium alloy. Micro-Vickers hardness tests as well as uniaxial tensile tests were conducted to evaluate the mechanical properties. Cold-rolling to higher thickness reductions resulted in a significant improvement in hardness and tensile strength as compared to peak-aged samples. Artificial peak-ageing before cold-rolling did not have a significant effect on the properties after cold-rolling. Enhancement of properties was comparable to the more complex severe plastic deformation process of cryo-rolling followed by warm-rolling. Cold-rolling could be used as a simpler and effective method to enhance mechanical properties of Al6061. No significant difference was found in the tensile strength between rolling and transverse directions.