Influence of Grain Boundary on Activation of Slip Systems in Magnesium: Crystal Plasticity Analysis

Tsuyoshi Mayama; Tetsuya Ohashi; Kenji Higashida

doi:10.4028/www.scientific.net/MSF.654-656.695

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HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Influence of Grain Boundary on Activation of Slip...

Influence of Grain Boundary on Activation of Slip Systems in Magnesium: Crystal Plasticity Analysis

Abstract:

Crystal plasticity finite element analysis method considering the accumulation of geometrically necessary (GN) dislocations was applied to monotonic loading of pure magnesium bi-crystal. The deformation mechanisms considering in the present analysis method are basal slip , prismatic slip , 1st order pyramidal slip , 2nd order pyramidal slip and tensile twinning . Tensile twinning is incorporated into crystal plasticity analysis assuming that twinning plane and direction of shear by twinning are equivalent to slip plane and slip direction, respectively. Critical resolved shear stresses (CRSSs) for each slip system in the literatures were used. Analysis model is designed to investigate the influence of grain boundary on the activation of slip systems. That is, one grain consisting of bi-crystal (grain A) had the crystal orientation whose Schmid factor for prismatic slip is 0.5. The crystal orientation of the other grain (grain B) was slightly deviated from that of grain A. The result of the calculation of tensile loading of the bi-crystal showed that both grains are deformed by the multiple slip of basal slip system, which resulted in the formation of GN dislocation bands.

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Periodical:

Materials Science Forum (Volumes 654-656)

Pages:

695-698

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.654-656.695

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Online since:

June 2010

Authors:

Tsuyoshi Mayama, Tetsuya Ohashi, Kenji Higashida

Keywords:

Crystal Plasticity Analysis, Dislocation, Finite Element Model (FEM), Magnesium

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References

[1] G. Proust, C.N. Tomé, A. Jain and S.R. Agnew: Int. J. Plasticity 25(2009), p.861.

Google Scholar

[2] S. -H. Choi, D.H. Kim, S.S. Park and B.S. You: Acta Materialia 58(2010), p.320.

Google Scholar

[3] H. Yoshinaga and R. Horiuchi: Trans. JIM 4(1963), p.1.

Google Scholar

[4] T. Obara, H. Yoshinaga and S. Morozumi: Acta Metall. 21(1973), p.845.

Google Scholar

[5] J. Koike and R. Ohyama: Acta Materialia 53(2005), p. (1963).

Google Scholar

[6] T. Ohashi: Int. J. Plasticity 21(2005), p. (2071).

Google Scholar

[7] A. Staroselsky and L. Anand: Int. J. Plasticity 19(2003), p.1843.

Google Scholar