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

Abstract:

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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.

Info:

Edited by:

P. B. Prangnell and P. S. Bate

Pages:

259-264

DOI:

10.4028/www.scientific.net/MSF.550.259

Citation:

A.Y. Kochubey et al., "TEM Investigation of Dislocations in Hot Deformed Mg-Al-Zn Alloy", Materials Science Forum, Vol. 550, pp. 259-264, 2007

Online since:

July 2007

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$35.00

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