Identification of Precipitates in 6013 Aluminum Alloy (Al–Mg–Si–Cu)

Characterization of Precipitates in Aluminium Alloy 6013 after Cold-Rolling and Annealing

“…Apart of them ones with the irregular shape, size of 1 to 5 µm were also noticed. They contained mainly Al, Mn, Fe, and Si and are described as casting α phase [5]. The different kinds of small particles of other phases were also distinguished and were related to the DSC peaks.…”

“…2. Two kinds of particles formed after supersaturation and annealing were featured -rod-shaped with size 50-200 nm and containing majority of Al, Mg, Si, Cu, can be distinguished as a Q phase (Al 3 Mg 9 Si 7 Cu 2 ) [5,6,[9][10][11]. Moreover in undeformed and non-annealed and undeformed and annealed in 260…”

“…Although there are some works about the precipitations during ageing [2,3,[4][5][6], there are no consistent works about the particles transformations during recrystallizations annealing of this alloy and deconvolution of the overlapped processes.…”

A Simple Approach to the Study of the Ageing Behaviour of Laser Beam and Friction Stir Welds between Similar and Dissimilar Alloys

“…As said before, 6013 alloys are generally heat treated at 180-190 °C for a few hours. The DSC trace shows that these temperature are quite far from the main precipitation peak, however DSC experiments made on heat treated samples demonstrate that a partial precipitation already occurs, probably with very small '' and Q' precipitates (Barbosa et al, 2002). Figure 11 shows the DSC curves for welded samples aged at 160 (18 h) and 190 °C (3 h).…”

“…The 6013 T4 alloy has been shown to contain Si, GP zones and (AlFeMnSi) (probably of (Fe,Mn) 3 Si x Al 12 composition), with the development of Mg 2 Si ( '') and Al 4 Cu 2 Mg 8 Si 7 (Q') precipitates during ageing at 180 °C (Barbosa et al, 2002;Genkin, 1994). Mg 2 Si precipitates are also known to grow from needle-shape to rod-shape and finally to plate-shape (Heinz & Skrotzki, 2002).…”