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TEM Investigation of Dislocations in Hot Deformed Mg-Al-Zn Alloy

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Abstract:

Ductility of Mg – alloys is linked to a shortage of independent slip systems. Basaltextured samples of Mg-Al-Zn alloy are examined for presence of dislocations of different types after hot compression tests of cast samples and cold compression tests of hot-rolled samples. The JEM-1000, electron transmission microscope with an accelerating voltage of 750 kV using a dark field–weak beam method of observation and the g·b=0 invisibility criterion as a basic method of the analysis of Burgers vectors, is used to analyse the samples. Dislocations with Burgers vectors , [c] and are found. The results are used to evaluate the dislocation density and determine the possible dislocation reactions.

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Periodical:

Materials Science Forum (Volume 550)

Pages:

259-264

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.550.259

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Online since:

July 2007

Authors:

A.Ya. Kochubey, Vladimir Serebryany, V.N. Timofeev

Keywords:

Basal Plane Dislocation (BPD), Cold Deformation, Hot Deformation, Mg-Al-Zn Alloy, Non-Basal Dislocation, Slip, TEM

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] G. Wassermann, J. Greven: Texturen metallischer Werkstoffe (Springer 1962).

Google Scholar

[2] P. G Partridge: Metallurgical Reviews Vol. 118 (1967), p.169.

Google Scholar

[3] S.E. Ion, F.J. Humphreys, S.H. White: Acta Metallurgica Vol. 30 (1982), p. (1909).

Google Scholar

[4] V.N. Serebryany, A. Ya. Kochubei and K.E. Mel'nikov: Proceedings of I& II France-Russia Seminar New Achievements in Material Science, (2005), p.25.

Google Scholar

[5] J. Koike: Materials Science Forum Vol. 419-422 (2003), p.189.

Google Scholar

[6] V.G. Davydov, L.B. Ber and A. Ya. Kochubei: Technology of Light Alloys [in Russian] N 2-3 (2003), p.28.

Google Scholar

[7] I.P. Jones and W.B. Hutchinson: Acta Metallurgica Vol. 29 (1981), p.951.

Google Scholar

[8] A. Urakami, M. Meshii and M.E. Fine: Acta Metallurgica Vol. 18 (1970), p.87.

Google Scholar

[9] M.N. Yoo: Metallurgical Transactions A Vol. 12A (1981), p.409.

Google Scholar

[10] S.R. Agnew, J.A. Horton and M.N. Yoo: Metall Mater Trans A Vol. 33A (2002), p.851.

Google Scholar

[11] S.R. Agnew, O. Duygulu: International Journal of Plasticity Vol. 21 (2005), p.1161.

Google Scholar