Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-24T08:00:05.408Z Has data issue: false hasContentIssue false
  • English
  • Français

Characteristics of different {10-12} twin variants in magnesium alloy during room temperature dynamic plastic deformation

Published online by Cambridge University Press:  17 June 2013

Chao Lou ,
Xiyan Zhang ,
Gaolin Duan ,
Jian Tu  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
Gaolin Duan
Affiliation:
School of Materials Science and Engineering, Chongqing University, Chongqing 400030, China
Jian Tu
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: [email protected]
Get access

Abstract

Recently, the {10-12} twin variants activated during dynamic plastic deformation (DPD) of Mg alloy have been investigated by analyzing their Schmid factors (SFs), and their contributions to deformation have been calculated. During DPD of Mg–3%Al–1%Zn alloy, different {10-12} variants are generated relative to their SFs when initial grains have defined orientations with one a-axis of the crystal lattice at roughly 0 or 30° from the compression direction. The volume fraction of twins deeply influences the strain accommodated by twinning. The {10-12} variant pair with the maximum SF accommodated about 90% of the twinning strain. Its high volume fraction indicated that both nucleation and growth mechanisms played important roles in the strain accommodation. Other {10-12} variants had a lower volume fraction and accommodated twinning strain mainly by twin nucleation and made a lesser contribution to the total deformation.

Keywords

Mg alloy{10-12} twin variantSchmid factorstrain accommodation
Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 14 , 28 July 2013 , pp. 1885 - 1890
Copyright
Copyright © Materials Research Society 2013 

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

Barnett, M.R.: Twinning and the ductility of magnesium alloys: Part I: “Tension” twins. Mater. Sci. Eng. A 464, 1 (2007).CrossRefGoogle Scholar
Barnett, M.R.: Twinning and the ductility of magnesium alloys: Part II: “Contraction” twins. Mater. Sci. Eng. A 464, 8 (2007).CrossRefGoogle Scholar
Yoo, M.H.: Slip, twinning, and fracture in hexagonal close-packed metals. Mater. Trans. A 12, 409 (1981).CrossRefGoogle 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
Christian, J.W. and Mahajan, S.: Deformation twinning. Prog. Mater. Sci. 39, 1 (1995).CrossRefGoogle Scholar
Somekawa, H., Hirai, K., Watanabe, H., Takigawa, Y., and Higashi, K.: Dislocation creep behavior in Mg–Al–Zn alloys. Mater. Sci. Eng. A 407, 53 (2005).CrossRefGoogle 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
Barnett, M.R., Keshavarz, Z., and Ma, X.: A semianalytical sachs model for the flow stress of a magnesium alloy. Mater. Trans. A 37, 2283 (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
Godet, S., Jiang, L., Luo, A.A., and Jonas, J.J.: Use of Schmid factors to select extension twin variants in extruded magnesium alloy tubes. Scr. Mater. 55, 1055 (2006).CrossRefGoogle Scholar
Jiang, L., Jonas, J.J., Luo, A.A., Sachdev, A.K., and Godet, S.: Twinning-induced softening in polycrystalline AM30 Mg alloy at moderate temperatures. Scr. Mater. 54, 771 (2006).CrossRefGoogle Scholar
Jiang, J., Godfrey, A., Liu, W., and Liu, Q.: Identification and analysis of twinning variants during compression of a Mg–Al–Zn alloy. Scr. Mater. 58, 122 (2008).CrossRefGoogle Scholar
Park, S.H., Hong, S.G., and Lee, C.S.: Activation mode dependent {10-12} twinning characteristics in a polycrystalline magnesium alloy. Scr. Mater. 62, 202 (2010).CrossRefGoogle Scholar
Clausen, B., Tome, C.N., Brown, D.W., and Agnew, S.R.: Reorientation and stress relaxation due to twinning: Modeling and experimental characterization for Mg. Acta Mater. 56, 2456 (2008).CrossRefGoogle Scholar
Knezevic, M., Levinson, A., Harries, R., Mishra, R.K., Doherty, R.D., and Kalidindi, S.R.: Deformation twinning in AZ31: Influence on strain hardening and texture evolution. Acta Mater. 58, 6230 (2010).CrossRefGoogle Scholar
Salem, A.A., Kalidindi, S.R., Doherty, R.D., and Semiatin, S.L.: Strain hardening due to deformation twinning in alpha-titanium: Mechanisms. Metall. Mater. Trans. A 37, 259 (2006).CrossRefGoogle Scholar
Hong, S.G., Park, S.H., and Lee, C.S.: Strain path dependence of {10-12} twinning activity in a polycrystalline magnesium alloy. Scr. Mater. 64, 145 (2011).CrossRefGoogle Scholar
Hong, S.G., Park, S.H., and Lee, C.S.: Role of {10–12} twinning characteristics in the deformation behavior of a polycrystalline magnesium alloy. Acta Mater. 58, 5873 (2010).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).CrossRefGoogle Scholar
Meyers, M.A., Vohringer, O., and Lubarda, V.A.: The onset of twinning in metals: A constitutive description. Acta Mater. 49, 4025 (2001).CrossRefGoogle Scholar
Capolungo, L., Marshall, P.E., McCabe, R.J., Beyerlein, I.J., and Tomé, C.N.: Nucleation and growth of twins in Zr: A statistical study. Acta Mater. 57, 6047 (2009).CrossRefGoogle Scholar
Ulacia, I., Dudamell, N.V., Gálvez, F., Yi, S., Pérez-Prado, M.T., and Hurtado, I.: Mechanical behavior and microstructural evolution of a Mg AZ31 sheet at dynamic strain rates. Acta Mater. 58, 2988 (2010).CrossRefGoogle Scholar