Hemijska industrija 2013 Volume 67, Issue 5, Pages: 707-714
https://doi.org/10.2298/HEMIND121023116R
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Some aspects of microstructure and properties of Al-Mg alloys after shear spinning and cold rolling
Radović Ljubica M. (Military Technical Institute, Belgrade)
Nikačević Milutin Z. (Military Technical Institute, Belgrade)
Jordović Branka M. (Technical Faculty, Čačak)
Three commercial Al-Mg alloys containing 3 wt.% to 6 wt.% of Mg (AlMg3,
AlMg4.5Mn and AlMg6Mn) were subjected to different forming processes: shear
spinning and cold rolling. The effect of Mg content and reduction in
thickness on the tensile properties and microstructure evolution of Al-Mg
alloys were studied. Both optical (OM) and transmission electron microscopy
(TEM) were used for the microstructure characterization. The results show
that the addition of Mg in these alloys increases the yield strength (YS) and
ultimate tensile strength (UTS) in both cold rolled and spun specimens. The
strength of all Al-Mg alloys after shear spinning was lower compared to the
strength after cold rolling for the same strain. This effect was attributed
to the occurrence of dynamic recovery during shear spinning and confirmed by
transmission electron microscopy.
Keywords: Al-Mg alloys, shear spinning, cold rolling, mechanical properties, microstructure, dynamic recovery
Projekat Ministarstva nauke Republike
Srbije, br. TR-34018