The present study examines the bending behavior of coarse and fine-grained AZ31 magnesium alloy. The corresponding deformation mechanisms are ascertained via tensile, compression, and bending tests in combination with digital image correlation and electron backscatter diffraction. It is shown that grain refinement from 60 μm to 3 μm significantly improves tensile ductility, while forming limits in compression and bending show no obvious effect of grain size. Analysis of the microstructure revealed a high density of twin bands in the compression zones of the bent samples. Interestingly, the fine-grained material experienced failure in the compression zone. The fracture strain in bending appears limited by the material ductility in both tension and compression. The outcome of this study is that in magnesium alloys grain refinement may not always be an effective method for the improvement of ductility, particularly when bending of the type considered here is dominant.
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F. Zarandi and S. Yue, Magnesium Sheet; Challenges and Opportunities (INTECH Open Access Publisher, 2011).
S. R. Agnew, 2—Deformation mechanisms of magnesium alloys, Advances in Wrought Magnesium Alloys, (2012), pp 63–104.
G.T. Halmos, Roll Forming Handbook (Boca Raton: CRC Press, 2005).
J. Hu, Z. Marciniak, and J. Duncan, Mechanics of Sheet Metal Forming (Amsterdam: Elsevier Science, 2002).
J. Datsko and C.T. Yang, J. Eng. Ind. 82, 309 (1960).
M. R. Barnett, 6—Forming of magnesium and its alloys, in Fundamentals of Magnesium Alloy Metallurgy, (2013), pp. 197–231.
I. Aslam, B. Li, Z. McClelland, S.J. Horstemeyer, Q. Ma, P.T. Wang, and M.F. Horstemeyer, J. Mater. Sci. Eng. A 590, 168 (2014).
A. Ben-Artzy, L. G. Hector Jr and P. E. Krajewski, in Proceedings of the Magnesium Technology (2010), pp. 69–75.
W. Wang, W. Zhang, W. Chen, G. Cui, and E. Wang, J. Alloys Compd. 737, 505 (2018).
S.A. Habib, J.T. Lloyd, C.S. Meredith, A.S. Khan, and S.E. Schoenfeld, Int. J. Plast 122, 285 (2019).
L. Jin, J. Dong, J. Sun, and A.A. Luo, Int. J. Plast 72, 218 (2015).
J. Singh, M.-S. Kim, and S.-H. Choi, Int. J. Plast 117, 33 (2019).
S. J. H. B. Li, A.L. Oppedal, P.T. Wang, M.F. Horstemeyer, TMS 2013, Annual Meeting and Exhibition, Supplemental Proceedings, 142nd.
L. Jin, J. Dong, A. Luo, R. Mishra, A. Sachdev, and W. Wu, J. Mater. Sci. 47, 3801 (2012).
C. Bruni, A. Forcellese, F. Gabrielli, and M. Simoncini, J. Mater. Process. Technol. 177, 373 (2006).
L. Wang, G. Huang, H. Zhang, Y. Wang, and L. Yin, J. Mater. Process. Technol. 213, 844 (2013).
M. Habibnejad-Korayem, M.K. Jain, and R.K. Mishra, J. Mater. Sci. Eng. A 648, 371 (2015).
M. Habibnejad-korayem, M.K. Jain, and R.K. Mishra, J. Mater. Sci. Eng. A 619, 378 (2014).
J. Bohlen, P. Dobroň, J. Swiostek, D. Letzig, F. Chmelík, P. Lukáč, and K.U. Kainer, J. Mater. Sci. Eng. A 462, 302 (2007).
H. Yu, Y. Xin, M. Wang, and Q. Liu, J. Mater. Sci. Technol. 34, 248 (2018).
D.L. Atwell, M.R. Barnett, and W.B. Hutchinson, J. Mater. Sci. Eng. A 549, 1 (2012).
A. Jain, O. Duygulu, D.W. Brown, C.N. Tomé, and S.R. Agnew, J. Mater. Sci. Eng. 486, 545 (2008).
N. Stanford and M.R. Barnett, J. Alloys Compd. 466, 182 (2008).
W. Yuan, S.K. Panigrahi, J.Q. Su, and R.S. Mishra, Scr. Mater. 65, 994 (2011).
H. Yu, C. Li, Y. Xin, A. Chapuis, X. Huang, and Q. Liu, Acta Mater. 128, 313 (2017).
L. Guo, Z. Chen, and L. Gao, J. Mater. Sci. Eng. A 528, 443 (2011).
C.M. Cepeda-Jiménez, J.M. Molina-Aldareguia, and M.T. Pérez-Prado, Acta Mater. 84, 443 (2015).
J.A. del Valle, F. Carreño, and O.A. Ruano, Acta Mater. 54, 4247 (2006).
D. Liu, Z. Liu, and E. Wang, J. Mater. Sci. Eng. A 612, 208 (2014).
Q. Miao, L.-X. Hu, H.-F. Sun, and E.-D. Wang, Trans. Nonferrous Met. Soc. China 19, 326 (2009).
S.H.M. Azghandi, M. Weiss, B.D. Arhatari, and M.R. Barnett, J. Alloys Compd. (2019). https://doi.org/10.1016/j.jallcom.2019.152618.
L. Balogh, S.R. Niezgoda, A.K. Kanjarla, D.W. Brown, B. Clausen, W. Liu, and C.N. Tomé, Acta Mater. 61, 3612 (2013).
P. Chen, F. Wang, J. Ombogo, and B. Li, J. Mater. Sci. Eng. A 739, 173 (2019).
M.R. Barnett, J. Mater. Sci. Eng. A 464, 8 (2007).
J. Koike, Metall. Mater. Trans. A 36, 1689 (2005).
Financial support from a Deakin International Postgraduate Scholarship is gratefully acknowledged. The authors also acknowledge support from the Deakin Advanced Characterization Facility. S.H.M.A. thanks Prof. Bevis Hutchinson for productive discussions.
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Azghandi, S.H.M., Weiss, M. & Barnett, M.R. The Effect of Grain Size on the Bend Forming Limits in AZ31 Mg Alloy. JOM 72, 2586–2596 (2020). https://doi.org/10.1007/s11837-020-04073-z