ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Warm hydroformability and mechanical properties of pre- and post- heat treated Al6061tubes were investigated in this study. For the investigation, as-extruded, fully annealed and T6-treated Al 6061 seamless tubes were prepared. To evaluate the hydroformability, uni-axial tensiletest and free bulge test were performed at room temperature and 200ÓC. Also mechanical propertiesof hydroformed part at various pre- and post-heat treatments were evaluated by tensile test. Thetensile test specimens were obtained from hexagonal shaped tube hydroformed at 200ÓC formingtemperature. As a result, hydroformability of fully annealed tube is 25% higher than that ofextruded tube. The tensile strength and elongation were more than 330MPa and 12%, respectively,when hydroformed part was T6 treated after warm hydroforming. However, hydroformed part usingT6 pre treated tube represents low elongation, 8%. Therefore, the T6 treatment after hydroformingfor as-extruded tube is proved to be the most cost-effective among various processing conditions
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.29-30.87.pdf
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