Open AccessNanoscale structural evolution of Al2Cu precipitates in friction-stir welded Al–Cu–Mg alloy
Author(s) -
Ivan Zuiko,
Sergey Malopheyev,
Sergey Mironov,
Rustam Kaibyshev
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1014/1/012063
Subject(s) - nucleation , materials science , alloy , indentation hardness , friction stir welding , dislocation , nanoscopic scale , metallurgy , phase (matter) , drop (telecommunication) , welding , composite material , microstructure , nanotechnology , thermodynamics , chemistry , mechanical engineering , physics , organic chemistry , engineering
The work is devoted to FSW of cold rolled AA2519. The non-uniform distribution of all second phase precipitates (including coherent θ″ and non-coherent θ) was shown via the TEM-technique. The nucleation of the stable θ-phase, along with decreased dislocation density, led to a drop (∼60 HV 0.2 ) in the microhardness of the nugget zone.