Characterization of intergranular stress corrosion cracking behavior of a FSW Al-Cu-Li 2050 nugget

Matthieu Dhondt (1) , Isabelle Aubert (1) , Nicolas Saintier (1) , Jean-Marc Olive (1)

1 I2M - Institut de Mécanique et d'Ingénierie de Bordeaux

This study deals with the in service durability of an alloy Al-Cu-Li 2050 friction stir welded. In an aeronautical context, this material could be submitted to mechanical stresses and a corrosive environment. Thus, the aim of this study is to characterize the intergranular stress corrosion cracking (IGSCC) behavior of the 2050 FSW weld nugget. First, a link has been established between several microstructural heterogeneities induced by the welding process and local strain variations, then between these heterogeneities and the initiation and propagation of IGSCC cracks.

Mots clés: Aluminium alloy / friction stir welding / intergranular stress corrosion

Domaines: Physique [physics]

Matthieu Dhondt, Isabelle Aubert, Nicolas Saintier, Jean-Marc Olive. Characterization of intergranular stress corrosion cracking behavior of a FSW Al-Cu-Li 2050 nugget. Mechanics & Industry, 2015, 16 (4), pp.401. ⟨hal-02334026⟩