Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-23T02:40:17.287Z Has data issue: false hasContentIssue false
  • English
  • Français

Mechanical behavior and microstructural characteristics of magnesium alloy containing {10-12} twin lamellar structure

Published online by Cambridge University Press:  20 December 2012

Chao Lou ,
Xiyan Zhang ,
Runhong Wang  and
Qing Liu
Chao Lou
Affiliation:
School of Materials Science and Engineering, Chongqing University, Chongqing 400030, China
Xiyan Zhang*
Affiliation:
School of Materials Science and Engineering, Chongqing University, Chongqing 400030, China
Runhong Wang
Affiliation:
School of Materials Science and Engineering, Chongqing University, Chongqing 400030, China
Qing Liu
Affiliation:
School of Materials Science and Engineering, Chongqing University, Chongqing 400030, China
*
a)Address all correspondence to this author. e-mail: kehen888@163.com
Get access

Abstract

A hot-rolled AZ31 Mg alloy sheet was subjected to dynamic plastic deformation parallel to the rolling direction with the aim of introducing {10-12} twins. Subsequent tensile tests were carried out along the predeformed direction and the initial transverse direction (TD). It was found that untwinning led to a significant drop in yield stress when tension is carried out along the predeformed direction. And {10-12} twins and strain caused by twinning were recovered by untwinning. The tensile yield stress increased slightly with prestrain was correlated with the texture hardening caused by untwinning. When tension is carried out along initial TD, {10-12} twinning activity was restrained and slip dominated plastic deformation. The tensile yield stress increased significantly with prestrain was strongly correlated with the hardening contributions of {10-12} twins. {10-12} twinning led to the obvious yield stress in-plane anisotropy but had little effect on the maximum flow stress.

Keywords

magnesium alloy{10-12} twinninguntwinninganisotropy
Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 5 , 14 March 2013 , pp. 733 - 739
Copyright
Copyright © Materials Research Society 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Avery, D.H., Hosford, W.F., and Backofen, W.A.: Plastic anisotropy in magnesium alloy sheets. Trans. Metall. Soc. AIME 233, 71 (1965).Google Scholar
Kelley, E.W. and Hosford, W.F.: Plane-strain compression of magnesium and magnesium alloy crystals. Trans. Metall. Soc. AIME 242, 5 (1968).Google Scholar
del Valle, J.A., Carren, F., and Ruano, O.A.: Influence of texture and grain size on work hardening and ductility in magnesium-based alloys processed by ECAP and rolling. Acta Mater. 54, 4247 (2006).CrossRefGoogle Scholar
Gehrmann, R., Frommert, M.M., and Gottstein, G.: Texture effects on plastic deformation of magnesium. Mater. Sci. Eng., A 395, 338 (2005).CrossRefGoogle Scholar
Christian, J.W. and Mahajan, S.: Deformation twinning. Prog. Mater. Sci. 39, 1 (1995).CrossRefGoogle Scholar
Yi, S.B., Davies, C.H.J., Brokmeier, H.G., Bolmaro, R.E., Kainer, K.U., and Homeyer, J.: Deformation and texture evolution in AZ31 magnesium alloy during uniaxial loading. Acta Mater. 54, 549 (2006).CrossRefGoogle Scholar
Jiang, L., Jonas, J.J., Luo, A.A., Sachdev, A.K., and Godet, S.: Influence of {10-12} extension twinning on the flow behavior of AZ31 Mg alloy. Mater. Sci. Eng., A 445, 302 (2007).CrossRefGoogle Scholar
Jiang, L. and Jonas, J.J.: Effect of twinning on the flow behavior during strain path reversals in two Mg (+Al, Zn, Mn) alloys. Scr. Mater. 58, 803 (2008).CrossRefGoogle Scholar
Wan, G., Wu, B.L., Zhang, Y.D., Sha, G.Y., and Esling, C.: Anisotropy of dynamic behavior of extruded AZ31 magnesium alloy. Mater. Sci. Eng., A 527, 2915 (2010).10.1016/j.msea.2010.01.023CrossRefGoogle Scholar
Choi, S.H., Kim, J.K., Kim, B.J., and Park, Y.B.: The effect of grain size distribution on the shape of flow stress curves of Mg–3Al–1Zn under uniaxial compression. Mater. Sci. Eng., A 488, 458 (2008).CrossRefGoogle Scholar
Murr, L.E., Moin, E., and Greulich, F.: The contribution of deformation twins to yield stress: The Hall-Petch law for inter-twin spacing. Scr. Metall. 12, 1031 (1978).10.1016/0036-9748(78)90019-4CrossRefGoogle Scholar
Barnett, M.R., Keshavarz, Z., Beer, A.G., and Atwell, D.: Influence of grain size on the compressive deformation of wrought Mg–3Al–1Zn. Acta Mater. 52, 5093 (2004).CrossRefGoogle Scholar
Karaman, I., Sehitoglu, H., Chumlyakov, Y.I., Kireeva, I.V., and Maier, H.J.: The effect of twinning and slip on the Bauschinger effect of Hadfield steel single crystals. Metall. Mater. Trans. A 32, 695 (2001).CrossRefGoogle Scholar
Lou, X.Y., Li, M., Boger, R.K., Agnew, S.R., and Wagoner, R.H.: Hardening evolution of AZ31B Mg sheet. Int. J. Plast. 23, 44 (2007).CrossRefGoogle Scholar
Proust, G., Tome, C.N., Jain, A., and Agnew, S.R.: Modeling the effect of twinning and detwinning during strain-path changes of magnesium alloy AZ31. Int. J. Plast. 25, 861 (2009).CrossRefGoogle Scholar
Wang, Y.N. and Huang, J.C.: The role of twinning and untwinning in yielding behavior in hot-extruded Mg–Al–Zn alloy. Acta Mater. 55, 897 (2007).CrossRefGoogle Scholar
Kleiner, S. and Uggowitzer, P.J.: Mechanical anisotropy of extruded Mg–6%Al–1%Zn alloy. Mater. Sci. Eng., A 379, 258 (2004).CrossRefGoogle Scholar
Partridge, P.G.: Cyclic twinning in fatigued close-packed hexagonal metals. Philos. Mag. 12, 1043 (1965).CrossRefGoogle Scholar
Dudamell, N.V., Ulacia, I., Gálvez, F., Yi, S., Bohlen, J., Letzig, D., Hurtado, I., and Pérez-Prado, M.T.: Twinning and grain subdivision during dynamic deformation of a Mg AZ31 sheet alloy at room temperature. Acta Mater. 59, 6949 (2011).10.1016/j.actamat.2011.07.047CrossRefGoogle Scholar
Jiang, L., Jonas, J.J., Mishra, R.K., Luo, A.A., Sachdev, A.K., and Godet, S.: Twinning and texture development in two Mg alloys subjected to loading along three different strain paths. Acta Mater. 55, 3899 (2007).CrossRefGoogle Scholar
Agnew, S.R. and Duygulu, O.: Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B. Int. J. Plast. 21, 1161 (2005).10.1016/j.ijplas.2004.05.018CrossRefGoogle Scholar
Keshavarz, Z. and Barnett, M.R.: EBSD analysis of deformation modes in Mg-3Al-1Zn. Scr. Mater. 55, 915 (2006).CrossRefGoogle Scholar
Caceres, C.H. and Blake, A.H.: On the strain hardening behaviour of magnesium at room temperature. Mater. Sci. Eng., A 462, 193 (2007).CrossRefGoogle Scholar
Ball, E.A. and Prangnell, P.B.: Tensile-compressive yield asymmetries in high strength wrought magnesium alloys. Scr. Mater. 31, 111 (1994).CrossRefGoogle Scholar
Agnew, S.R., Yoo, M.H., and Tome, C.N.: Application of texture simulation to understanding mechanical behavior of Mg and solid solution alloys containing Li or Y. Acta Mater. 49, 4277 (2001).CrossRefGoogle Scholar
Barnett, M.R.: A Taylor model based description of the proof stress of magnesium AZ31 during hot working. Metall. Mater. Trans. A 34A, 1799 (2003).CrossRefGoogle Scholar