Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Characterization of superplastic material SPF8090 AI-Li with the variation of the strain rate and the temperature

변형률속도와 온도에 따른 SPF8090 Al-Li 초소성 재료의 물성 특성

  • 이기석 (한국과학기술원 기계공학과) ;
  • 허훈 (한국과학기술원 기계공학과)
  • Published : 1997.10.01
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Abstract

A superplastic material, aluminum-lithium alloy 8090, was examined with uniaxial tensile tests to investigate its thermomechanical behavior. The tests were carried out at the strain rate ranging from $2X10^4 to 1X10^2$ and at the temperature from 48$0^{\circ}C$ to 54$0^{\circ}C$. The experiments produced force-dis-placement curves which were converted to stress-strain curves. From the curves, the optimum conditions of superplastic forming were obtained by deteriming the strain rate sensitivety, the optimum strain rate, and the strength coefficient for various forming temperatures.

Keywords

References

  1. J. Inst. Met. v.54 The viscous properties of extruded eutectic alloys of lead-tin and bismuththn C.E. Pearson
  2. Metall. Trans. A. v.13A The Rate Controlling Deformation Mechanisms in Superplasticity-A Critical Assessment A. Arieli;A. K. Mukherjee
  3. Mater. Sci. Eng. v.A208 Geometrical aspects of superplastic flow M.G. Zelin;A.K. Mukherjee
  4. Metall. Trans. A. v.13A Influences of Material Parameters and Microstructure on Superplastic Forming A.K. Ghosh;C.H. Hamilton
  5. Scr. Metall. et Mater. v.25 Effect of Two-Stage Strain-Rate Test on the Superplastic Behavior of an Al-Li-Cu-Mg-Zr Alloy-Mechanical Behavior Q. Liu;J. Yang;M. Yao
  6. Scr. Metall. et Mater. v.25 Effect of Two-Stage Strain-Rate Test on the Superplastic Behavior of an Al-Li-Cu-Mg-Zr Alloy-Microstructural characterization Q. Liu;J. Yang;M. Yao
  7. Scr. Metall. et Mater v.25 The Characteristics of Cavitation During Super-plastic DEformation of a Warm-Rolled Al-Li-Cu-Mg-Zr Alloy Q, Liu;x. Huang;J. Yang;M. Yao
  8. Scr. Metall. et Mater. v.25 Superplastic Properties of an Al-2.4Mg-1.8Li-0.5Sc Alloy E.L. Bradley, Ill;R.A. Emigh;J.W. Morris
  9. Mater. Sci. Eng. v.A212 Superplastic deformation mechanisms of Particulate reinforced aluminum matrix composites B.Q. Han;K.C. Chan
  10. Comput. Meths. Appl. Mech. Engrg v.46 A primer on superplasticity in natural formulation J.H. Argyris;J. St. Doltsinis
  11. Commun, appl. numer. methods v.5 A pressure cycle control algorithm for superplastic forming J. Bonet;A.H.S. Wargadipura;R.D. Wood
  12. Int. J. Numer. Methods Engng v.30 Numerical simulation of the superplastic forminf of thin sheet components using the finite element method J. Bonet;R.D. Wood;A.H.S. Wargadipura
  13. Int. J. Non-Linear Mechanics v.26 no.5 Development of a pressure prediction method for superplastic forming process S.C. Rama;N. Chandra
  14. Mater. Sci. Eng. v.84 A mechanical analysis of the superplastic free bulging of metal sheet Y. Q. Song;J. Zhao
  15. 서울대학교 대학원 공학석사학위논문 8090 Al-Li 합금의 초소성 변형특성 오관영