Process for the desensitisation to intercrystalline corrosion of

Details Process for the desensitisation to intercrystalline corrosion of Process for the desensitisation to intercrystalline corrosion of

1994-08-15

1997-07-01

Simmons, David A.

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148698, 148700, 148701, 148702, 148437, 148438, 148439, 148440, 420528, 420529, 420533, 420534, 420546, C22F 104

Patent

active

056433727

ABSTRACT:
An improvement to a process for treating an aluminum alloy for the series AA 2000 or AA 6000 comprising solution heat treating, quenching and natural or artificial aging, in which conventional heat solution heat treating is defined as solution heat treating the alloy at a temperature which is 5.degree. to 10.degree. C. below a known eutectics melting temperature for the alloy. The improvement comprises solution heat treating at a temperature which is 10.degree. to 100.degree. C. below the conventional solution heat treating temperature in order to desensitize the alloy to intercrystalline corrosion.

REFERENCES:
patent: 3198676 (1965-08-01), Sprowls et al.
patent: 3287185 (1966-11-01), Vachet et al.
patent: 3305410 (1967-02-01), Sublett et al.
patent: 3988180 (1976-10-01), Bouvaist

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