TEM Investigation of Dislocations in Hot Deformed Mg-Al-Zn Alloy
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.
P. B. Prangnell and P. S. Bate
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