Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Development of Textures and Microstructures during Compression in a Hot-Extruded AZ31 Mg Alloy

고온압출한 AZ 31 마그네슘 합금의 압축변형 중 집합조직과 미세조직의 발달

  • Jung, Byung Jo (Department of Materials Science and Metallurgical Engineering, Sunchon National University) ;
  • Lee, Myung Jae (Department of Materials Science and Metallurgical Engineering, Sunchon National University) ;
  • Park, Yong-Bum (Department of Materials Science and Metallurgical Engineering, Sunchon National University)
  • 정병조 (순천대학교신소재공학과) ;
  • 이명재 (순천대학교신소재공학과) ;
  • 박용범 (순천대학교신소재공학과)
  • Received : 2009.11.26
  • Published : 2010.04.15
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Abstract

The development of textures and microstructures during plastic deformation in a hot-extruded AZ 31 Mg alloy was investigated using a compression test with such parameters as deformation temperature, strain rate. It was observed from true stress-strain curves that twinning involves changes of the flow stresses. In the early stages of deformation at temperatures lower than $200^{\circ}C$, the occurrence of twins resulted in a decrease of the work-hardening rate, which increased drastically at a true strain of -0.05. The evolution of the deformation textures were assessed with the aid of EBSD analyses in terms of the competition between twinning and slip activity.

Keywords

Acknowledgement

Supported by : 지식경제부

References

  1. J. F. Stohr and J. P. Poirier, Philos. Mag. 25, 1313 (1972) https://doi.org/10.1080/14786437208223856
  2. T. Obara, H. Yoshinaga, and S. Morozumi, Acta Mater. 21, 845 (1973) https://doi.org/10.1016/0001-6160(73)90141-7
  3. Barnett, M. R., Davies, C. H. J. and Ma, X. Scripta. Mater. 52, 627 (2005) https://doi.org/10.1016/j.scriptamat.2004.11.022
  4. Jain, A. and Agnew, S. R. Mater. Sci. Eng. A 462, 29 (2007) https://doi.org/10.1016/j.msea.2006.03.160
  5. Wang, Y. N. and Huang, J. C. Acta Mater. 55,897 (2007) https://doi.org/10.1016/j.actamat.2006.09.010
  6. L. Jiang, J. J. Jonas, R. K. Mishra, A. A. Luo, A. K. Sachdev, and S. Godet, Acta Mater. 55, 3899 (2007) https://doi.org/10.1016/j.actamat.2007.03.006
  7. S.-H. Choi, E. J. Shin, and B. S. Seong, Acta Mater. 55, 4181 (2007) https://doi.org/10.1016/j.actamat.2007.03.015
  8. M. R. Barnett, Journal of Light Metals. 1,167 (2001) https://doi.org/10.1016/S1471-5317(01)00010-4
  9. M. R. Barnett, Z. Keshavarz, A. G. Beer, and D. Atwell, Acta Mater. 52, 5093 (2004) https://doi.org/10.1016/j.actamat.2004.07.015
  10. M. D. Nave and M. R. Barnett, Scripta Mater. 51, 881 (2004) https://doi.org/10.1016/j.scriptamat.2004.07.002
  11. R. Gehrmann, M. M. Frommert, and G. Gottstein, Mater. Sci. Eng. A 395, 338 (2005) https://doi.org/10.1016/j.msea.2005.01.002
  12. L. Jiang, J. J. Jonas, A. A. Luo, A. K. Sachdev, and S. Godet, Scripta Mater. 54, 771 (2006) https://doi.org/10.1016/j.scriptamat.2005.11.029
  13. L. Jiang, J. J. Jonas, A. A. Luob, A. K. Sachdev, and S. Godet, Mater. Sci. Eng. A 445-446, 302 (2007) https://doi.org/10.1016/j.msea.2006.09.069
  14. Y. Chino, K. Kimura, and M. Mabuchi, Mater. Sci. Eng. A 486, 481 (2008) https://doi.org/10.1016/j.msea.2007.09.058
  15. S.-H. Choi, J. K. Kim, B. J. Kim, and Y. B. Park, Mater. Sci. Eng. A 488, 458 (2008) https://doi.org/10.1016/j.msea.2007.11.071
  16. W. J. Kim, S. I. Hong, Y. S. Kim, S. H. Min, H. T. Jeong, and J. D. Lee, Acta Mater. 51, 3293 (2003). https://doi.org/10.1016/S1359-6454(03)00161-7
  17. J. A. Del Valle and M. T. Perez-Prado, Mater. Sci. Eng. A 355, 68 (2003) https://doi.org/10.1016/S0921-5093(03)00043-1
  18. D. W. Browna, S. R. Agnew, M. A. M. Bourke, and T. M. Holden, Mater. Sci. Eng. A 399, 1 (2005) https://doi.org/10.1016/j.msea.2005.02.016
  19. S. R. Agnew, P. Mehrotra, T. M. Lillo, G. M. Stoica, and P. K. Liaw, Acta Mater. 53, 3135 (2005) https://doi.org/10.1016/j.actamat.2005.02.019
  20. H. K. Lin, J. C. Huanga, and T. G. Langdon, Mater. Sci. Eng. A 402, 250 (2005) https://doi.org/10.1016/j.msea.2005.04.018
  21. S.-B. Vi, C. H. J. Davies, H.-G. Brokmeier, R. E. Bo1maro, K. U. Kainer, and J. Homeyer, Acta Mater. 54, 549 (2006). https://doi.org/10.1016/j.actamat.2005.09.024
  22. T. Walde and H. Riedel, Mater. Sci. Eng. A 443, 277 (2007) https://doi.org/10.1016/j.msea.2006.09.028
  23. M. R. Barnett, Mater. Sci. Eng. A 464, 1 (2007) https://doi.org/10.1016/j.msea.2006.12.037
  24. M. R. Barnett, Mater. Sci. Eng. A 464, 8 (2007) https://doi.org/10.1016/j.msea.2007.02.109
  25. H. J. bunge, Texture Analysis in Materials Science, p.47 butterworths Pub., London (1982)
  26. T. Laser, Ch. Hartig, M. R. Nurnberg, D. Letzig, and R. Bormann, Acta Mater. 56, 2791 (2008) https://doi.org/10.1016/j.actamat.2008.02.010
  27. N. J. Park, J. H. Hwang, J. S. Roh, J. Kor. Met. & Mater. 47, 1 (2009)
  28. A. Ga1iyev, R. Kaibyshev, and G. Gottstein,Acta Mater. 49, 1199 (2001) https://doi.org/10.1016/S1359-6454(01)00020-9
  29. S.-H. Choi, D. H. Kim, and B. S. Seong, Met. Mater. Int. 15, 239 (2009) https://doi.org/10.1007/s12540-009-0239-9