Method for heat treating iron-nickel-chromium alloy

Details Method for heat treating iron-nickel-chromium alloy Method for heat treating iron-nickel-chromium alloy

1978-06-22

1980-09-30

Steiner, Arthur J.

Metal treatment

Compositions

Heat treating

75122, 75134F, 148 127R, C21D 714, C22D 110

Patent

active

042253632

ABSTRACT:
A method for heat treating an age-hardenable iron-nickel-chromium alloy to obtain a morphology of the gamma-double prime phase enveloping the gamma-prime phase, the alloy consisting essentially of about 40 to 50% nickel, 7.5 to 14% chromium, 1.5 to 4% niobium, 0.3 to 0.75% silicon, 1 to 3% titanium, 0.1 to 0.5% aluminum, 0.02 to 1% carbon, 0.002 to 0.0015% boron and the remain substantially all iron. To obtain optimal results, the alloy is cold-worked 20 to 60% followed by heating at 1050.degree. C. for 1/2 hour with an air-cool plus heating at 800.degree. C. for 2 hours with a furnace cool to 625.degree. C. The alloy is then held at 625.degree. C. for 12 hours, followed by an air-cool.

REFERENCES:
patent: 3046108 (1962-07-01), Eiselstein
patent: 4066447 (1978-01-01), Smith, Jr. et al.
Cozar et al., "Morphology of Y' and Y" Precipitates and Thermal Stability of Momel 718 Type Alloys," Met. Trans., vol. 4, 1/73, pp. 47-59.
Huntington Alloys, "Inconel Alloy 206," Fat'l. Nickel Co., Inc., 1974, pp. 1-12.

Affiliated with

Also associated with

Rating

Method for heat treating iron-nickel-chromium alloy does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for heat treating iron-nickel-chromium alloy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for heat treating iron-nickel-chromium alloy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1167752