M Ghosh and S Basu
Indian Institute of Science Engineering and Technology, India
Posters & Accepted Abstracts: J Material Sci Eng
Plane strain compression tests are generally proposed for sheet metals to attain large strains encountered during industrial forming processes. Formability of sheet metal depends both on intrinsic (microstructure, precipitate, constituent particles etc.) and extrinsic (temperature, strain rate etc.) parameters, formability may be improved by increasing temperature. In the present investigation, an effort has been made to record the changes in flow curve due to change in strain rate and temperature through plane strain compression tests for AA6016 in naturally aged condition (T4). Subsequently, the changes in microstructure have been evaluated by gallium enhanced microscopy (GEM) and crystallographic texture by electron back scattered diffraction (EBSD) and X-ray diffraction (XRD). A remarkable change in plastic anisotropy during PSC is observed when the temperature is increased from room to 250�°C. Although textural changes are rarely affected by the temperature change, it can still be concluded that at different temperatures creation of different families of slip systems could be possible.
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