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A Study on Deformation Behaviors of Al 6061, 7075 Tube at Different Heat Treatments for Warm Hydroforming  

Yi, Hyae-Kyung (Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University)
Moon, Young Hoon (Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University)
Publication Information
Journal of the Korean Society for Heat Treatment / v.20, no.1, 2007 , pp. 1-10 More about this Journal
Abstract
The deformation behaviors of full annealed and T6 treated 6061, 7075 aluminum tubes are investigated at various temperature performing uniaxial tensile test. Full annealed Al 6061 and Al7075 tubes, and T6 treated Al7075 tube don't show sharp local necking with an elongation of 50% at $300^{\circ}C$. So it is expected that influenced by elevated tempterature. At $300^{\circ}C$ and strain rate of 0.001/s, many micro-cracks are observed in T6 treated Al 6061 tube, which is believed to be responsible for the decrease of total elongation.
Keywords
Warm hydroforming; Elevated temperature uniaxial tensile test; Al 6061; Al 7075;
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