Open AccessPost-treatment of arc-welded aluminum alloy joints by laser shock peening
Author(s) -
A. A. Tareva,
D. M. Melnikov,
M. N. Melnikova
Publication year - 2019
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/681/1/012045
Subject(s) - peening , materials science , laser peening , welding , residual stress , indentation hardness , shock (circulatory) , metallurgy , laser , alloy , aluminium , arc welding , shot peening , ultimate tensile strength , composite material , microstructure , optics , medicine , physics
The possibility to improve aluminum alloy welded joints with laser shock penning was demonstrated. It was shown that microhardness of peened area in heat affected zone is higher than one without post-treatment. Also in this area the residual tensile stresses turns into residual compressive stresses. Laser peening process is proposed to carry out using low-energy lasers. In this case were analysed different types of ablative overlays.