Metal treatment – Process of modifying or maintaining internal physical... – Chemical-heat removing or burning of metal
Patent
1986-11-19
1988-06-14
Sheehan, John P.
Metal treatment
Process of modifying or maintaining internal physical...
Chemical-heat removing or burning of metal
148162, 148419, C22F 116, C22C 3000
Patent
active
047509503
ABSTRACT:
A process for heat treating alloy objects which comprises solution treating a nickel-base alloy containing chromium, molybdenum, copper, titanium, aluminum and iron at a temperature in excess of 955.degree. C. and then aging the alloy without intervening cold work at a temperature in the range of 700.degree. C. to 720.degree. C. This treatment provides non-cold worked structure which is tough, not susceptible to stress corrosion cracking in a test environment simulating a sour gas well environment and which exhibits high level of fracture energy in a slow strain rate tensile test in that environment.
REFERENCES:
patent: 4358511 (1982-11-01), Smith, Jr. et al.
Clatworthy Edward F.
Ganesan Pasupathy
Harris Jerry A.
INCO Alloys International, Inc.
Kenny Raymond J.
Mulligan, Jr. Francis J.
Sheehan John P.
Wyszomierski George
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