US4129464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High yield strength Ni-Cr-Mo alloys and methods of producing the same
Assignee: Haynes International Inc
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Filing: 1977-08-24
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Granted: 1978-12-12
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Expires: 1997-08-24
Abstract
Abstract A process and an alloy are provided for producing high strength material having good ductility to provide a high strength, corrosion resistant alloy including the steps of (1) preparing a body of material having a composition consisting essentially of by weight, about 13% to 18% chromium, about 13% to 18% molybdenum, less than 0.01% carbon, less than about 6% iron, less than about 1.25% cobalt, less than about 4% tungsten, less than 0.5% aluminum, less than 1% manganese, less than 0.5% silicon, and the balance nickel with usual transient metals and impurities in ordinary amounts, and (2) thereafter aging said body at a temperature in the range about 900 DEG and 1100 DEG F to effect an A2B ordering reaction in the composition.
Inventors
- 👤 Steven J. Matthews
- 👤 H. Joseph Klein
- 👤 Frank G. Hodge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:12
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/056; C22F; C22F1/00; C22F1/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
143 words
In a process for producing a high strength material having good ductility to provide a ductile, high strength, corrosion resistant alloy, the steps comprising: (1) preparing a body of material having a composition consisting essentially of by weight, about 13% to 18% chromium, about 13% to 18% molybdenum, less than 0.01% carbon, less than about 6% iron, less than about 2.50% cobalt, less than about 4% tungsten, less than 0.5% aluminum, less than 1% manganese, less than 0.5% silicon, and the balance nickel with usual transient metals and impurities in ordinary amounts, and (2) thereafter aging said body at a temperature in the range about 900° to 1100° F. for at least about fifty hours to effect an A 2 B ordering reaction in the composition and an increase in room temperature yield strength at least about 1.5 times the mill annealed strength.
Claim 2
Dependent Claim
143 words
In a process for producing a high strength material having good ductility to provide a ductile, high strength, corrosion resistant alloy, the steps comprising: (1) preparing a body of material having a composition consisting essentially of by weight, about 13% to 18% chromium, about 13% to 18% molybdenum, less than 0.01% carbon, less than about 6% iron, less than about 2.50% cobalt, less than about 4% tungsten, less than 0.5% aluminum, less than 1% manganese, less than 0.5% silicon, and the balance nickel with usual transient metals and impurities in ordinary amounts, and (2) thereafter aging said body at a temperature in the range about 900° to 1100° F. for at least about fifty hours to effect an A 2 B ordering reaction in the composition and an increase in room temperature yield strength at least about 1.5 times the mill annealed strength.
Claim 3
Dependent Claim
58 words
In a process as claimed in claim 1 wherein the transient metals include: Vanadium less than 0.5%, boron less than 0.02% phosphorous less than 0.05%, sulfur less than 0.02% zirconium less than 0.02%, titanium less than 0.5%, magnesium less than 0.25%, calcium less than 0.025%, copper less than 0.05%, lead less than 0.005% and lanthanum less than 0.025%.
Claim 4
Dependent Claim
17 words
In a process as claimed in claim 1 wherein the material is aged at least fifty hours.
Claim 5
Dependent Claim
123 words
An alloy body having a high yield strength and good ductility over a wide temperature span and good corrosion resistance consisting essentially of about 13% to 18% chromium, about 13% to 18% molybdenum, less than 0.01% carbon, less than about 6% iron, less than about 2.50% cobalt, less than about 4% tungsten, less than 0.5% aluminum, less than 1% manganese, less than 0.5% silicon and the balance nickel with usual transient metals and impurities in ordinary amounts, said body having been aged at a temperature in the range 900° to 1100° F. for at least about fifty hours to effect an A 2 B ordering reaction, and an increase in room temperature yield strength at least about 1.5 times the mill annealed strength.
Claim 6
Dependent Claim
123 words
An alloy body having a high yield strength and good ductility over a wide temperature span and good corrosion resistance consisting essentially of about 13% to 18% chromium, about 13% to 18% molybdenum, less than 0.01% carbon, less than about 6% iron, less than about 2.50% cobalt, less than about 4% tungsten, less than 0.5% aluminum, less than 1% manganese, less than 0.5% silicon and the balance nickel with usual transient metals and impurities in ordinary amounts, said body having been aged at a temperature in the range 900° to 1100° F. for at least about fifty hours to effect an A 2 B ordering reaction, and an increase in room temperature yield strength at least about 1.5 times the mill annealed strength.
Claim 7
Dependent Claim
58 words
An alloy body as claimed in claim 4 wherein the transient metals include: Vanadium less than 0.5%, boron less than 0.02% phosphorous less than 0.05%, sulfur less than 0.02% zirconium less than 0.02%, titanium less than 0.5% magnesium less than 0.25%, calcium less than 0.025% copper less than 0.05%, lead less than 0.005% and lanthanum less than 0.025%.
Claim 8
Dependent Claim
16 words
An alloy body as claimed in claim 4 which has been aged at least fifty hours.
Claim 9
Dependent Claim
108 words
A high yield strength alloy consisting essentially of about 13% to 18% chromium, about 13% to 18% molybdenum, less than 0.01% carbon, less than about 6% iron, less than about 2.50% cobalt, less than about 4% tungsten, less than 0.5% aluminum, less than 1% manganese, less than 0.5% silicon and the balance nickel with usual transient metals and impurities in ordinary amounts, said body having been aged at a temperature in room temperature the range 900° to 1100° F. for at least about fifty hours to effect an A 2 B ordering reaction, and an increase in yield strength at least about 1.5 times the mill annealed strength.
Claim 10
Dependent Claim
108 words
A high yield strength alloy consisting essentially of about 13% to 18% chromium, about 13% to 18% molybdenum, less than 0.01% carbon, less than about 6% iron, less than about 2.50% cobalt, less than about 4% tungsten, less than 0.5% aluminum, less than 1% manganese, less than 0.5% silicon and the balance nickel with usual transient metals and impurities in ordinary amounts, said body having been aged at a temperature in room temperature the range 900° to 1100° F. for at least about fifty hours to effect an A 2 B ordering reaction, and an increase in yield strength at least about 1.5 times the mill annealed strength.
Claim 11
Dependent Claim
60 words
A high yield strength alloy as claimed in claim 7 wherein the transient metals include: Vanadium less than 0.5%, boron less than 0.02% phosphorous less than 0.05%, sulfur less than 0.02% zirconium less than 0.02%, titanium less than 0.5%, magnesium less than 0.25%, calcium less than 0.025%, copper less than 0.05%, lead less than 0.005% and lanthanum less than 0.025%.
Claim 12
Dependent Claim
23 words
A high yield strength alloy as claimed in claim 7, said alloy being characterized by having been aged for at least 168 hours.
Claim 13
Dependent Claim
18 words
A high yield strength alloy as claimed in claim 7 which has been aged at least 50 hours.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-11 | 1982-06-12 | 1982-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-11 | 1986-06-12 | 1986-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-11 | 1990-06-12 | 1990-12-12 | $7700.00 | Window Closed / Lapsed |