Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Superplastic Deformation Behavior of a Zn-0.3Wt%Al Alloy Fabricated by ECAP

ECAP 가공한 Zn-0.3Wt%Al 합금의 초소성 변형 특성

  • 하태권 (강릉원주대학교 금속재료공학과) ;
  • 정재용 (강릉원주대학교 금속재료공학과) ;
  • 김근준 (강릉원주대학교 금속재료공학과) ;
  • 나길환 (강릉원주대학교 금속재료공학과)
  • Published : 2009.10.01
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Abstract

Superplastic deformation behavior and texture evolution after equal channel angular pressing (ECAP) of Zn-0.3Wt%Al alloy were investigated in this study. ECAP was conducted at temperatures from $60^{\circ}C$ 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, which is called shear texture. Tensile tests were carried out at $100^{\circ}C$ for ECAPed specimens under the strain rate of 0.0002/s. After ECAP of the Zn-0.3Wt%Al alloy, elongation was dramatically increased up to 500% at $100^{\circ}C$. The effect of ECAP on the anisotropy in the superplastic deformation behavior was negligible.

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References

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