한국소성가공학회:학술대회논문집 (Proceedings of the Korean Society for Technology of Plasticity Conference)

한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
권호 표지

변형률속도와 온도에 따른 SPF8090 Al-Li 초소성재료의 물성치 평가

Characterization of superplastic material SPF8090 Al-Li for the strain-rate and the temperature

  • 이기석 (한국과학기술원 기계공학과) ;
  • 허훈 (한국과학기술원 기계공학과)
  • Lee, Ki-Seok (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Huh, Hoon (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
  • 발행 : 1997.03.01
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초록

A superlastic material, aluminum - lithium alloy 8090, were examined with uniaxial tensile test to investigate its thermomechanical behavior. The tests were carried out at the strain-rates ranging from 2${\times}$10-4 to 1${\times}$10-2 and at the temperatures from 48 0$^{\circ}C$ to 540$^{\circ}C$. The experiments produced force-displacement curves which converted to stress-strain curves. From the curves, several important superplastic factor such as strain-rate sensitivity, optimum strain-rate and strength coefficient were obtained.

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