A combinatorial approach for studying the effect of Mg concentration on precipitation in an Al–Cu–Li alloy

E Gumbmann (1, 2) , F de Geuser (1) , A Deschamps (1) , Williams Lefebvre (3) , F Robaut (4) , C Sigli (2)

1 SIMaP - Science et Ingénierie des Matériaux et Procédés
2 C-TEC - Constellium Technology Center
3 GPM - Groupe de physique des matériaux
4 CMTC - Consortium des Moyens Technologiques Communs

We apply a combinatorial approach to study the influence of Mg concentration on the precipitation kinetics in an Al-­‐Cu-­‐Li alloy using a diffusion couple made by linear friction welding. The precipitation kinetics is monitored in the composition gradient material using simultaneous space and time-­‐resolved in-­‐situ small-­‐ angle X-­‐ray scattering measurements during ageing , and the strengthening of the precipitates is evaluated by micro-­‐hardness profiles. This data provides an evaluation of the amount of Mg necessary to promote precipitation of the T1-­‐Al2CuLi phase.

Domaines: Matériaux

E Gumbmann, F de Geuser, A Deschamps, Williams Lefebvre, F Robaut, et al.. A combinatorial approach for studying the effect of Mg concentration on precipitation in an Al–Cu–Li alloy. Scripta Materialia, 2016, ⟨10.1016/j.scriptamat.2015.07.042⟩. ⟨hal-01265702⟩