Obtaining High-Strength Laser Welds of Aircraft-Grade Aluminium Alloys
Optimal laser welding modes were found that ensure the production of welds without defects in the form of open porosity, undercuts, cracks in the weld and the heat-affected zone. The postprocessing of welded joints obtained under optimal laser welding conditions was carried out on the basis of heat treatment (quenching + artificial aging). It is shown that, by changing the heat treatment regimes, it is possible to control the mechanical parameters of welded joint: strength and plasticity of the samples.
For the first time for welded joints obtained by laser welding and optimal post-processing for aluminum-lithium thermally processed alloys, mechanical characteristics were achieved comparable to the value for the alloy in delivery condition.
Теги: aluminum alloys laser welding strength microstructure lasers & laser systems алюминиевые сплавы лазерная сварка прочность микроструктура
Подпишитесь на журнал, чтобы прочитать полную версию статьи.