Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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A Study on Deformation Behaviors of Al 6061, 7075 Tube at Different Heat Treatments for Warm Hydroforming

온간액압성형공정 적용을 위한 알루미늄 6061, 7075 튜브의 열처리조건에 따른 변형특성연구

  • 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)
  • 이혜경 (부산대학교 정밀정형 및 금형가공연구소-기계공학부) ;
  • 문영훈 (부산대학교 정밀정형 및 금형가공연구소-기계공학부)
  • Received : 2006.09.28
  • Accepted : 2006.11.06
  • Published : 2007.01.30
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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.

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References

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