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Aluminum alloys of various series are used extensively in the auto and aviation sectors because of their low weight to strength ratio. In the current article, one of the hard-to-form aluminum alloys, i.e., AA2014-T6 investigated for its formability and microstructural changes in incremental forming at room and elevated temperature of 250 O C. The mechanical properties and formability of the material are evaluated using uniaxial tensile test and Varying Wall Angle Cone Frustums (VWACF), respectively. A novel experimental setup is designed with an induction coil to heat the sheet at elevated temperatures for incremental forming. As-received sheets formed at room and elevated temperature of 250 O C, showed less improvement in material formability due to less number of slip planes. Thus, the samples are solutionized at 480 O C for 3 hours followed by aging at 180 O C for 8 hours. However, much improvement was not observed in room temperature formability, even though the ductility was improved significantly. But, forming at an elevated temperature of 250 O C, the formability was enhanced by 956% compared to the as-received material. The formability of the material is correlated with the microstructural modification after solution treatment at room and elevated temperatures.

Heat treatment and temperature effects on formability of AA2014-T6 in incremental forming