Experimental And Finite Element Studies of Stretch Forming Process for AA2014 Alloy At Elevated Temperature

Abstract

Sheet metal forming operations play a crucial role in the manufacturing process of various products. However, the challenge of plastic instability, which often leads to defective products, continues to persist in this field. It is important to consider various parameters, such as the Forming Limit Diagram (FLD), to overcome this issue during manufacturing. The Aluminium Alloy (AA2014) has been employed in this study to investigate its formability under different temperatures (room temperature, 150 °C, and 300 °C) at the strain rate of 0.1mm/s. The results of the study were obtained by performing stretch forming by utilizing the Nakajima test. The results showed the limiting strains of the material improved with an increase in temperature, and the findings were analyzed through fractography studies performed with a Scanning electron microscope, and simulations were done using LS-dyna software. This study provides valuable insights into the formability of AA 2014 sheets at elevated temperatures and will aid in the development of more efficient and effective sheet metal forming operations.