Heat treatment of aluminium-lithium alloys

Details Heat treatment of aluminium-lithium alloys Heat treatment of aluminium-lithium alloys

C - Chemistry, Metallurgy

22

F

C22F 1/04 (2006.01) C22F 1/057 (2006.01)

Patent

CA 2181585

A method of heat treating an aluminium-lithium alloy is provided. The method includes carrying out a succession of at least two artificial ageing steps. The first such step is carried out within a first temperature range and one or more further steps are carried out within successively reduced temperature ranges to promote the precipitation of the .delta.' phase of the alloy.

On décrit un procédé de traitement thermique d'un alliage d'aluminium-lithium, consistant en une succession d'au moins deux étapes de vieillissement artificiel. La première de ces étapes s'effectue à l'intérieur d'une première plage de températures et l'étape ou les étapes ultérieures s'effectuent à l'intérieur de plages de températures successivement réduites afin de promouvoir la précipitation de la phase .delta.' de l'alliage.

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