Abstract
Sheet metal forming depends on the key material properties namely strain hardening exponent (n) and planar/normal anisotropy. In this work, a comparative study has been performed between the room temperature and elevated temperature tensile tests of ASS 304 steel samples. Uniaxial tensile tests were conducted on along three directions, along rolling direction (RD) (0° to RD), across (90° to RD) and diagonally (45° to RD) and corresponding numerical values of anisotropy were determined. Tensile tests were performed from room temperature (27 °C) to 300 °C at an interval of 100 °C. Results indicated that yield strength YS of decreased initially and then suddenly increased at 300 °C temperature specimen. The ultimate tensile strength UTS of different temperature specimen values are decreased simultaneously. Elongation (%) and strain hardening exponent values also showed higher values for 300 °C temperature specimen compared to other samples. It was observed that better material forming properties could be obtained around 300 °C deformation temperature wherein lower loads are required to produce sheet metal components.
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