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Article Dans Une Revue Materials Science and Engineering: A Année : 2015

Impact of grain microstructure on the heterogeneity of precipitation strengthening in an Al–Li–Cu alloy

Résumé

The effect of grain microstructure on the age-hardening behavior is investigated on recrystallized and un-recrystallized Al-Cu-Li alloys by combining electron-backscatter-diffraction and micro-hardness mapping. The spatial heterogeneity of micro-hardness is found to be strongly dependent on the grain microstructure. Controlled experiments are carried out to change the pre-strain before artificial ageing. These experiments lead to an evaluation of the range of local strain induced by pre-stretching as a function of the grain microstructure and results in heterogeneous formation of the hardening T-1 precipitates.

Domaines

Matériaux
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Dates et versions

hal-01213180 , version 1 (24-04-2023)

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Thomas Dorin, Alexis Deschamps, Frédéric de Geuser, Florence Robaut. Impact of grain microstructure on the heterogeneity of precipitation strengthening in an Al–Li–Cu alloy. Materials Science and Engineering: A, 2015, 627, pp.51-55. ⟨10.1016/j.msea.2014.12.073⟩. ⟨hal-01213180⟩
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