Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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High Temperature Deformation Behavior of Sc Added Al-7.7wt%Zn-2.0wt%Mg-1.9wt%Cu Alloy

Sc을 첨가한 Al-7.7wt%Zn-2.0wt%Mg-1.9wt%Cu합금의 고온 변형거동

  • Woo, Kee-Do (Division of Advanced Materials Engineering, The Research Center of Advanced Materials Development, Chonbuk National University) ;
  • Ryu, Yong-Seok (Division of Advanced Materials Engineering, The Research Center of Advanced Materials Development, Chonbuk National University) ;
  • Kim, Sug-Won (Division of Advanced Materials Engineering, The Research Center of Advanced Materials Development, Chonbuk National University) ;
  • Deliang Zhang (Department of Materials and Process Engineering, University of Waikato)
  • 우기도 (전북대학교 신소재공학부. 공학연구원 신소재개발 연구센터) ;
  • 유용석 (전북대학교 신소재공학부. 공학연구원 신소재개발 연구센터) ;
  • 김석원 (전북대학교 신소재공학부. 공학연구원 신소재개발 연구센터) ;
  • Published : 2003.12.01
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Abstract

The Al-7.7Zn-2.0Mg-1.9Cu-0.1Zr-0.1Sc alloy exhibited excellent elongation by the new thermomechanical treatment (TMT) process; solution treatment and furnace cooling\longrightarrowhot and cold rolling and then annealing for short time. Tensile test at high temperature from 430 to $500^{\circ}C$ has been performed with various strain rates using for the Al-7.7Zn-2.0Mg-1.9Cu-0.1Zr-0.1Sc alloy obtained by the TMT process. The elongation of the Al-7.7Zn-2.0Mg-1.9Cu-0.1Zr-0.1Sc was 550% tensile tested at $470^{\circ}C$ temperature and 2.2 $\times$ $10^{-3}$ $s^{-1}$ strain rate. The m value of Al-7.7Zn-2.0Mg-1.9Cu-0.1Zr-0.1Sc alloy deformed 85% increased from 0.33 to 0.46 with increasing total elongation. This new TMT process was very simple and easy to make the sheets in the company.

Keywords

References

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