Transactions of Materials Processing (소성∙가공)

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

DOI QR Code

Superplastic Deformation Behavior of ECA dressed 7010 Al Alloy

ECAP가공된 7010 Al 합금의 초소성 변형 특성

  • 김지식 (상주대학교 신소재공학과)
  • Published : 2002.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

The grain size of 7010 Al alloy was refined to submicrometer level by using equal channel angular pressing (ECAP) and additional warm rolling. The mechanisms of grain refinement in ECAP process were fragmentation of coarse grain to ultra fine subgrains after a few passes and continuous recrystallization of the subgrains with the increase o( passes. Because of ultrafine grain size, essentially low temperature and high strain rate superplasticity was observed after ECAP process and warm rolling to form a sheet metal. The maximum elongation of 700% was obtained for an ECA pressed specimen after IS passes without warm rolling at $450^{\circ}C$ with strain rate of 5x$10^{-3}$/sec.

Keywords

References

  1. Metals and Materials International v.7 no.5 Developing SPD methods for processing bulk nanostructured materials with enhanced properties R. Z. Valiev https://doi.org/10.1007/BF03027081
  2. Acta Materialia v.45 no.11 An investigation of microstructural evolution during equal channel angular pressing Y. Iwahashi;Z. Horita;M. Nemoto;T. G. Langdon https://doi.org/10.1016/S1359-6454(97)00100-6
  3. Acta Materialia v.49 no.1 Microstructure of two-phase Al-1.7Cu alloy deformed by equal-channel angular pressing M. Murayama;Z. Horita;K. Hono https://doi.org/10.1016/S1359-6454(00)00308-6
  4. Metallurgical and Materials Transactions A v.33 no.3 Structural evolution of a etrip-cast Al alloy sheet processed by continuous equal-channel angular pressing J. C. Lee;H. K. Seok;J. Y. Suh;J. H. Han;Y. H. Chung https://doi.org/10.1007/s11661-002-0128-z
  5. 대한금속재료학회지 v.39 no.2 ECAP 강가공에 의한 5083 Al 합금의 결정립 미세화 이정국;신동혁(외)
  6. Acta Materialia v.50 no.3 Influence of scandium and zirconium on grain stability and superplastic ductilities in ultrafine-grained Al-Mg alloys S. Lee;A. Utsunomiya;H. Akamatsu;K. Neishi;M. Furukawa;Z. Horita;T. G. Langdon https://doi.org/10.1016/S1359-6454(01)00368-8
  7. Materials Science and Engineering v.A300 no.1-2 Improving the mechanical properties of magnesium and a magnesium alloy through severe plastic deformation A. Yamashita;Z. Horita;T. G. Langdon
  8. Acta Materialia v.49 no.18 Influence of magnesium on grain refinement and ductility in a dilute Al-Sc alloy M.Furukawa;A.Utsunomiya;K.Matsubara;Z.Horita;T.G.Langdon https://doi.org/10.1016/S1359-6454(01)00262-2
  9. Scripta Materialia v.45 no.8 Effect of aging treatment on heavily deformed microstructure of a 6061 aluminum alloy after equal channel angular pressing J. K. Kim;H. G. Jeong;S. I. Hong;Y. S. Kim;W. J. Kim https://doi.org/10.1016/S1359-6462(01)01109-5
  10. Journal of Materials Processing Technology v.117 no.3 Improvement of mechanical properties for Al alloys using equal-channel angular pressing Z. Horita;T. Fujinami;M. Nemoto;T. G. Langdon https://doi.org/10.1016/S0924-0136(01)00783-X
  11. Materials Science and Engineering v.A319-321 Cyclic response of fine grain 5056 Al-Mg alloy processed by equal-channel angular pressing V. Patlan;K. Higashi;K. Kitagawa;A.Vinogradov;M. Kawazoe
  12. Nanostructured Materials v.11 no.7 Fatigue properties of 5056 Al-Mg alloy produced by equal-channel angular pressing A. Vinogradovl;S. Nagasaki;V. Patlan;K. Kitagawa;M. Kawazoe https://doi.org/10.1016/S0965-9773(99)00392-X
  13. Materials Science and Engineering A v.A300 no.1-2 Overview of fatigue properties of fine grain 5056 Al-Mg alloy processed by equal-channel angular pressing V. Patlan;A. Vinogradov;K. Higashi;K. Kitagawa
  14. Materials Science and Engineering A v.A297 no.1-2 Optimizing the procedure of equal-channel angular pressing for maximum superplasticity S. Komura;M. Furukawa;Z. Horita;M. Nemoto;T. G. Langdon
  15. Scripta Materialia v.44 no.5 Influence of rolling on the superplastic behavior of an Al-Mg-Sc alloy after ECAP H. Akamatsu;T. Fujinami;Z. Horita;T. G. Langdon https://doi.org/10.1016/S1359-6462(00)00666-7
  16. J. of Mat. Sci. v.20 Effect of superplastic deformation on the grain size and tensile properties of 7010 alloy sheet A. J. Shakesheff;P. G. Partridge https://doi.org/10.1007/BF00556070
  17. Acta Materialia v.44 no.4 Origin of cube texture during hot rolling of commercial Al-Mn-Mg alloys O. Daaland;E. Nes https://doi.org/10.1016/1359-6454(95)00289-8
  18. Acta Materialia v.44 no.4 Recrystallization texture development in commercial Al-Mn-Mg alloys O. Daaland;E. Nes https://doi.org/10.1016/1359-6454(95)00290-1
  19. Mater.Trans. JIM v.33 Effect of grain boundary characters on grain boundary sliding during superplastic deformation T. Haruna;T. Shibayanagi;S. Hori;N. Furushiro https://doi.org/10.2320/matertrans1989.33.374