Heat treatment of aluminium-lithium alloys

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

1996-07-25

1999-03-09

Ryan, Patrick

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148535, C22F 104

Patent

active

058794816

ABSTRACT:
A method of heat treating an aluminum--lithium alloy is provided. The method includes carrying out a succession of at least two artificial aging 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.

REFERENCES:
patent: 3359142 (1967-12-01), Ward
patent: 4812178 (1989-03-01), Dubost
patent: 5076859 (1991-12-01), Rioja et al.
patent: 5439536 (1995-08-01), Cho
M. Peters, "Aluminium-Lithium Proceedings 6th Int. Conf.", 1991, DGM, Oberursel, DE XP 000565929, pp. 137-142 M. Furukawa et al, Split Aging of Chill Cast AL-LI-ZR Alloys see p. 138, paragraph 2; figure 2.

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