TEM study of the microstructure evolution in a friction stir-welded AlCuMgAg alloy

Mechanical and thermal modelling of Friction Stir Welding

“…annealed, quenched, stress-relieved by stretching with no specific hardening treatment), which was welded by Friction Stir Welding at the French Corporate Research Center of EADS. According to the typical chemical composition, given in Table 1, the various types of hardening precipitate expected in the alloy are Al 2 CuMg (S phase) and Al 2 Cu ( phase) [11][12][13]. Furthermore, most of the hardening is known to occur through S phase precipitation occurring approximately at 350 • C [14].…”

Effect of ageing time on strength and microstructures of an Al–Cu–Li–Zn–Mg–Mn–Zr alloy

“…A summary of Cu:Mg ratio in Al-Cu-Mg alloys where phase has been observed is presented in Table 2. In order to form phase, small Cu:Mg ratio is required with Si present alone [24,27,28], and moderate Cu:Mg ratio is needed with Ag present alone [25,30]. If both Si and Ag are absent, then large Cu:Mg ratio is required to form phase [29,31].…”

Microstructure and precipitated phase in the thermo-mechanically affected zone of friction stir welded joint for 2024 aluminium alloy

“…The dynamic recrystallization and grain refinement phenomenon can occur in the central stir zone during FSW [14,15]. Figure 2a shows the microstructure between the TMAZ and the WN using metallographic analysis.…”