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

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Superplastic Deformation Behavior of a Zn-Al Alloy Fabricated by ECAP

ECAP 가공한 Zn-Al 합금의 초소성 변형특성

  • Jung, J.Y. (Dept. of Metal and Materials Engineering, Kangnung-Wonju National University) ;
  • Kim, K.J. (Dept. of Metal and Materials Engineering, Kangnung-Wonju National University) ;
  • Na, G.H. (Dept. of Metal and Materials Engineering, Kangnung-Wonju National University) ;
  • Ha, T.K. (Dept. of Metal and Materials Engineering, Kangnung-Wonju National University)
  • 정재용 (강릉대학교 금속재료공학과) ;
  • 김근준 (강릉대학교 금속재료공학과) ;
  • 나길환 (강릉대학교 금속재료공학과) ;
  • 하태권 (강릉대학교 금속재료공학과)
  • Published : 2009.05.07
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Abstract

Superplastic deformation behavior and texture evolution after equal channel angular pressing (ECAP) of Zn-0.3Al alloy were investigated in this study. ECAP was conducted at temperatures from $40^{\circ}C$ to $160^{\circ}C$ on the plate type specimens of 5 mm thickness and 20 mm width. The specimens obtained by ECAP showed typical texture with basal poles tilted away from the ND toward ED. A series of compression and tensile tests was carried out at temperatures from RT to $200^{\circ}C$ under the strain rate from 0.03 to 10/s. After ECAP of the Zn-Al alloy, elongation was dramatically increased up to 1000% at above $60^{\circ}C$. The effects of ECAP on the texture and anisotropy in the superplastic deformation bebavior were found to be negligible.

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