The Effect of Grain Size on the Deformation Behaviour of Selected Mg Alloys

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The mechanical properties and deformation behaviour of magnesium alloys are significantly influenced by the testing temperature, texture and grain size. The paper gives an overview on the influence of the grain size on the mechanical properties of Mg and Mg-2Al alloys at various temperatures. The yield stress and the fracture stress increase with decreasing grain size. It was shown that the elongation to fracture increases with inverse square root of grain size. The effect of grain size on the tensile strength and the elongation to fracture is influenced by the testing temperature. The observed grain size dependence of the elongation to fracture is explained by the activity of non-basal slip systems.

Info:

Periodical:

Materials Science Forum (Volumes 567-568)

Edited by:

Pavel Šandera

Pages:

85-88

Citation:

P. Lukáč and Z. Trojanová, "The Effect of Grain Size on the Deformation Behaviour of Selected Mg Alloys", Materials Science Forum, Vols. 567-568, pp. 85-88, 2008

Online since:

December 2007

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$38.00

[1] ASM Speciality Handbook Magnesium and Magnesium Alloys, edited by M.M. Avedesian and B. Baker, ASM International, Materials Park, OH (1999).

[2] A. Jäger, P. Lukáč and V. Gärtnerová: Kovove Mater. Vol. 42 (2004), p.165.

[3] K. Máthis, A. Mussi, Z. Trojanová, P. Lukáč and E. Rauch: Kovove Mater. Vol 41 (2003), p.293.

[4] Y.N. Wang and J.C. Huang: Mater. Trans. Vol. 48 (2007), p.184.

[5] F.E. Hauser, P.R. Landon and J.E. Dorn: Trans. AIME Vol. 206 (1956), p.589.

[6] J.A. Chapman and D.V. Wilson: J. Inst. Metals Vol. 91 (1963), p.39.

[7] D.V. Wilson: J. Inst. Metals Vol. 98 (1970), p.133.

[8] G. Sambasiva Rao and Y.V.R.K. Prasad: Metall. Trans. A Vol. 13 (1982), p.2219.

[9] G. Mann, J.R. Griffiths and C.H. Cáceres: J. Alloys Comp. Vol. 378 (2004), p.188.

[10] M.R. Barnett, Z. Keshavarz, A.G. Beer and D. Atwell: Acta Mater. Vol. 52 (2004), p.5093.

[11] E.O. Hall: Proc. Phys. Soc. (B) Vol. 64 (1951), p.747.

[12] N.J. Petch: J. Iron Steel Inst. (London) Vol. 174 (1953), p.25.

[13] R.W. Armstrong: Acta Metall. Vol. 16 (1968), p.347.

[14] G. Nussbaum, P. Sainfort, G. Regazzoni and H. Gjestland: Scripta Metall. Vol. 23 (1989), p.1079.

[15] H. Jones: Key Eng. Mater. Vol. 97-98 (1994), p.1.

[16] T. Mukai, M. Yamanoi, H. Watanabe, K. Ishikawa and K. Higashi: Mater. Trans. Vol. 42 (2001), p.1182.

[17] S.H.C. Park, Y.S. Sato and K. Kokawa: J. Mater. Sci. Vol 38 (2003), p.4379.

[18] K. Máthis and Z. Trojanová: Kovove Mater. Vol. 43 (2005), p.238.

[19] J.C.M. Li and Y.T. Chou: Metall. Trans. Vol. 1 (1970), p.1145.

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

[21] S. Ando and H. Tonda: Mater. Sci. Forum Vol. 350-351 (2000), p.43.