Effect of Plane Strain on the Microstructure and Texture of AZ31 Sheet with Various Reduction Ratios

Abstract:

In this study, the effect of plane strain on the microstructure and texture of AZ31 sheet was investigated with various reduction ratios. To achieve plane strain, that is, to prevent shear deformation during warm-rolling, AZ31 sheet was capsuled by pure Cu tube. The large strain induced by simple one-pass warm-rolling led to the significant grain refinement and texture randomization. The two-dimensional finite-element method showed that the warm-rolling of AZ31 sheet capsuled by Cu tube imposed a uniform plane strain in the whole sheet thickness. The high reduction ratio caused the dynamic recrystallization during annealing of the rolled sheet.

• Periodical: Materials Science Forum (Volumes 783-786)
• Pages: 396-401
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.783-786.396
• Online since: May 2014
• Authors: Dae Guen Kim*, Hak Young Kim, Young Ok Yoon, Shae K. Kim, Hyun Kyu Lim
• Keywords: AZ31 Sheet, Plane Strain, Texture, Two-Dimensional Finite-Element Method (FEM)

References

[1] G. Cole: Proceedings of 56th Annual Meeting of IMA, June 6-8, 1999, Rome, Italy, (1999).

[2] E. Aghion, B. Bronfin, Magnesium Alloys Development towards the 21st Century, Mat. Sci. Forum 350-351 (2000) 19.

DOI: 10.4028/www.scientific.net/msf.350-351.19

[3] Y. Chino, K. Sassa, A. Kamiya, M. Mabchi, Influence of Rolling Routes on Press Formability of a Rolled AZ31 Mg Alloy Sheet, J. Jpn. Inst. Met. 47 (2006)2555-2560.

DOI: 10.2320/matertrans.47.2555

[4] M. T. Pérez-Prado, J.A. del Valle, J.M. Contreras , O.A. Ruano, Microstructural evolution during large strain hot rolling of an AM60 Mg alloy, Scr. Mater. 50 (2004) 661.

DOI: 10.1016/j.scriptamat.2003.11.014

[5] M. T. Pérez-Prado, J.A. del Valle ,O.A. Ruano, Effect of sheet thickness on the microstructureal evolution of an Mg AZ61 alloy during large strain hot rolling, Scr. Mater. , 50 (2004)667-671.

DOI: 10.1016/j.scriptamat.2003.11.015

[6] H. Watanabe, M. Fukusumi, H. Somekawa, T. Mukai, Texture and mechanical properties of superplastically deformed magnesium alloy rod, Mater. Sci. Eng. A 527 (2010) 6350-6358.

DOI: 10.1016/j.msea.2010.06.053

[7] H.G. Kang, J. K. Kim, M.Y. Huh, O. Engler, A combined textures and FEM study of strain states during roll-cladding of five-ply stainless steel/aluminum composites, Mater. Sci. Eng. A, 452-453 (2007) 347-358.

DOI: 10.1016/j.msea.2006.10.130

[8] M. R. Barnett, A. G. Beer, D. Atwell, and A. Oudin, Influence of grain size on hot working stresses and microstructures in Mg-3Al-1Zn, Scr. Mater. , 51 (2004)19-24.

DOI: 10.1016/j.scriptamat.2004.03.023

[9] R. Cottam, J. Robson, G. Lorimer, B. Davis, Dynamic recrystallization of Mg and Mg-Y alloys: Crystallographic texture development, Mater. Sci. Eng. A 485, (2008)375-382.

DOI: 10.1016/j.msea.2007.08.016

[10] Chang Dong Yim, Young Myoung Seo, Bong Sun You, Effect of the Reduction Ratio Per Pass on the Microstructure of A Hot-Rolled AZ31 Magnesium Alloy Sheet, Met. Mater. Int. 15, (2009)683-688.

DOI: 10.1007/s12540-009-0683-6

[11] J. W. Christian, S. Mahajan, Prog. Mater. Sci. 39 (1995) 1-545.