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

Effect of Initial Texture on the Twinning Formation of AZ31 Mg Alloy

AZ31 Mg 합금의 쌍정 형성에 미치는 초기 집합조직의 영향

  • Published : 2007.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, the effects of initial texture on the twinning formation of AZ31 Mg rolled sheet was investigated. Uniaxial compression tests were carried out on samples cut along the normal direction(ND) and roiling direction(RD), respectively, of rolled AZ31 Mg alloy sheet at various temperatures (RT, 200, 250, 300, 350, $400^{\circ}C$) with the fixed strain rate($10^{-2}/s$). The results showed that deformation twining occurred actively only in the RD specimens, which promoted homogeneous deformation as compared to the ND specimens. The effect of temperature on the formation of deformation twins was also investigated, and the slip/twin transition temperature was found to be approximately $250^{\circ}C$.

Keywords

References

  1. S. S. Park, Y. S. Park, N. J. Kim, 2002, Microstructure and properties of strip cast AZ91 Mg alloy, Met. Mater. Int., Vol. 6, pp. 551-554
  2. X. Y. Lou, M. Li, R. K. Boger, S. R. Agnew, R. H. Wagoner, 2007, Hardening evolution of AZ31B Mg sheet, Inter. Journal of Plasticity, Vol. 23, pp. 44-86 https://doi.org/10.1016/j.ijplas.2006.03.005
  3. T. Obara, H. Yoshinaga, S. Morozumi, 1973, [11-22](11-23)slip system in magnesium, Acta Mater. Vol. 21, pp. 845-853 https://doi.org/10.1016/0001-6160(73)90141-7
  4. Y. N. Wang, J. C. Huang, 2007, The role of twinning and untwinning in yielding behavior in hot-extruded Mg-Al-Zn alloy, Acta Mater. Vol. 55, pp. 897-905 https://doi.org/10.1016/j.actamat.2006.09.010
  5. L. Jiang, J. J. Jonas, A. A. Luo, A. K. Sachdev, S. Godet, 2007, Influence of {10-12} extension twinning on the flow behavior of AZ31 Mg alloy, Mater. Sci. Eng. Vol. 445-446, pp. 14-19 https://doi.org/10.1016/j.msea.2006.06.086
  6. Robert E. Reed-Hill, R. Abbaschian: Physical Metallurgy Principles, PWS publishing company, Boston 1991
  7. M. R. Barnett, Z. Keshavarz, A. G. Beer, D. Atwell, 2004, Influence of grain size on the compressive deformation of wrought Mg-3AI-1Zn, Acta Mater. Vol. 52, pp. 5093-5103 https://doi.org/10.1016/j.actamat.2004.07.015