Formability of 5083 Al Alloy Hemi-Spherical Shells Using Hot Deep Drawing Process

摘要

5083 is highly resistant to attack by both seawater and industrial chemical environments and is being used for fabrication pressure vessels. Most of pressure vessels have spherical domes. The current work was interested to explore the formability of hemi-spherical shells from 5083 Al alloy using hot deep drawing process. The major process variables, which would control the stress induced during the drawing of hemi-spherical cups, were temperature and strain rate. The damage factor was influenced by the coefficient of friction. Except local burnishing lower-middle portion of the side walls, the formability of hemi-spherical cups has been found excellent.