US3087812A - Metallurgical composition - Google Patents
Metallurgical composition Download PDFInfo
- Publication number
- US3087812A US3087812A US28196A US2819660A US3087812A US 3087812 A US3087812 A US 3087812A US 28196 A US28196 A US 28196A US 2819660 A US2819660 A US 2819660A US 3087812 A US3087812 A US 3087812A
- Authority
- US
- United States
- Prior art keywords
- metallurgical composition
- alloy
- alloys
- temperature
- stresses
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000203 mixture Substances 0.000 title description 4
- 239000000956 alloy Substances 0.000 description 14
- 229910045601 alloy Inorganic materials 0.000 description 14
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 2
- 229910052776 Thorium Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
Definitions
- the present invention relates to new and novel high temperature heat and stress resistant nickel base alloys suitable for use at extremely elevated temperatures under substantial tensile stresses and under great pressures as in the power plant units of gas turbine engines, turbojet engines, high pressure rotors as in steam power plants and similar uses.
- An object of this invention is to provide alloys suitable for use at these high temperatures and stresses, in temperatures to at least 2200 F. Another object of this invention is to provide these alloys and in addition and at one and the same time provide satisfactory, which may be equated with exceptional, resistance to oxidation, even in the presence of oxidizing atmospheres such as those obtained in the operation of jet aircratt and coal-burning gas turbines.
- Another object of the invention is to provide these alloys for use at high temperatures and stresses, along with the oxidation resistance, and at the same time provide these alloys possessing a low coeflicient of thermal conductivity.
- Another object of the invention is to provide these alloys for use at high temper exclusively and stresses, resistant to oxidation, having low thermal conductivity, and also possessing freedom from temperature sink.
- a high temperature heat and stress resistant alloy containing only the following elemental substances in proportions described by percentages by weight: Nickel, 51.8% to 59.4%; chromium, 5.92% to 10.75%; colbalt, 12.67% to 19.46%; tungsten, 5.12% to 11.2%; aluminum, 3.22% to 7.2%; molybdenum, 3.2% to 6.4%; cclumbium, not to exceed 2%; titanium, .245 to .687%; beryllium, .07% to .l9%; boron, .005% to 08%; and carbon, not to exceed .5 provided that no component listed shall account for less or more than the listed percentage of the finished alloy.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
United States Patent M 3,087,812 METALLURGICAL COMPOSITION Joseph H. Doss, 13417 Promenade Ave., Detroit 13, Mich. No Drawing. Filed May 11, 1960, Ser. No. 28,196 1 Claim. (Cl. 75-171) The present invention relates to new and novel high temperature heat and stress resistant nickel base alloys suitable for use at extremely elevated temperatures under substantial tensile stresses and under great pressures as in the power plant units of gas turbine engines, turbojet engines, high pressure rotors as in steam power plants and similar uses.
The art of metallurgical composition with respect to the uses cited and other similar uses involving high temperatures and great stresses has been faced in the recent past with the tendency to operate at higher and higher speeds, higher pressures and higher temperatures up to 2200 F., and above. Satisfactory service life has been obtained only with cobalt base alloys within the temperature range cited and even here the technologies have been limited by the materials available.
An object of this invention is to provide alloys suitable for use at these high temperatures and stresses, in temperatures to at least 2200 F. Another object of this invention is to provide these alloys and in addition and at one and the same time provide satisfactory, which may be equated with exceptional, resistance to oxidation, even in the presence of oxidizing atmospheres such as those obtained in the operation of jet aircratt and coal-burning gas turbines.
Another object of the invention is to provide these alloys for use at high temperatures and stresses, along with the oxidation resistance, and at the same time provide these alloys possessing a low coeflicient of thermal conductivity.
Another object of the invention is to provide these alloys for use at high temperautres and stresses, resistant to oxidation, having low thermal conductivity, and also possessing freedom from temperature sink.
My experiments prove that the foregoing objects are obtained, with the provision of the highly superior properties called for, properties which possessed to the degree found in the present invention are unique, by mixing a metallurgical alloy composed of the following components, the components thereof being present in the precise proportions stated below:
1 Not to exceed.
Having compounded the metal as shown above, it was tested by an independent laboratory according to procedures substantially in conformity with the general prac- Patented Apr. 30, 1963 2 tice used by those skilled in the art of testing stainless steel and other metals for oxidation at elevated temperatures, and was found to have the following properties with respect to resistance to oxidation.
Change in weight,
Test temperature, F.: gms./cm. /hr.
1800 +0.00025 2000 +0.000Sl 2200 -0-.0O815 Test temperature, F.: Tensile strength, p.s.i.
No standard test is provided for the determination of thermal conductivity and therefore a test was devised by me for this determination, which upon calibration indica-tes a thermal coefiicient of 6 B.T.U./hr./ft. F./it., at a metal temperature of approximately 2200 F.
Upon examination it was found that the alloy engages in thermionic electron emission to a high degree and that untreated, without the use of impregnation, oxide covering or activation, has an emission of l ampere per square centimeter at a temperature of 2000" F.) The above is without the addition of thorium. Experimentally, it has been found that the addition of up to 5% thorium in powdered form or master alloy to the mix during the process of mixing the alloy has no adverse elfect upon the high temperature and stress properties of the alloy. In practice I believe that the addition of one-half of one percent is suflicient to beneficiate the emission properties of the metal by an approximate factor of 2.
I claim:
A high temperature heat and stress resistant alloy containing only the following elemental substances in proportions described by percentages by weight: Nickel, 51.8% to 59.4%; chromium, 5.92% to 10.75%; colbalt, 12.67% to 19.46%; tungsten, 5.12% to 11.2%; aluminum, 3.22% to 7.2%; molybdenum, 3.2% to 6.4%; cclumbium, not to exceed 2%; titanium, .245 to .687%; beryllium, .07% to .l9%; boron, .005% to 08%; and carbon, not to exceed .5 provided that no component listed shall account for less or more than the listed percentage of the finished alloy.
References Cited in the file of this patent UNITED STATES PATENTS 2,245,366 Rohn et al June 10, 194-1 2,246,078 Rohn et al June 17, 1941 2,912,323 Bieber Nov. 10, 1959 2,920,956 Nisbet et a1. Ian. 12, 1960 FOREIGN PATENTS 534,855 Canada Dec. 25, 1956 1,160,309 France Feb. 24, 1958
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US28196A US3087812A (en) | 1960-05-11 | 1960-05-11 | Metallurgical composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US28196A US3087812A (en) | 1960-05-11 | 1960-05-11 | Metallurgical composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3087812A true US3087812A (en) | 1963-04-30 |
Family
ID=21842089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US28196A Expired - Lifetime US3087812A (en) | 1960-05-11 | 1960-05-11 | Metallurgical composition |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3087812A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2245366A (en) * | 1938-07-26 | 1941-06-10 | Rohn Wilhelm | Hardening cobalt-nickel-chromiumiron alloys |
| US2246078A (en) * | 1937-07-31 | 1941-06-17 | Rohn Wilhelm | Valve made of cobalt-nickel-chromium-iron alloy |
| CA534855A (en) * | 1956-12-25 | Sachs Kurt | Nickel-chromium casting alloy | |
| FR1160309A (en) * | 1955-11-16 | 1958-07-11 | Birmingham Small Arms Co Ltd | Nickel alloys |
| US2912323A (en) * | 1957-09-16 | 1959-11-10 | Int Nickel Co | Cast nickel base alloy for high temperature service |
| US2920956A (en) * | 1956-10-08 | 1960-01-12 | Universal Cyclops Steel Corp | Method of preparing high temperature alloys |
-
1960
- 1960-05-11 US US28196A patent/US3087812A/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA534855A (en) * | 1956-12-25 | Sachs Kurt | Nickel-chromium casting alloy | |
| US2246078A (en) * | 1937-07-31 | 1941-06-17 | Rohn Wilhelm | Valve made of cobalt-nickel-chromium-iron alloy |
| US2245366A (en) * | 1938-07-26 | 1941-06-10 | Rohn Wilhelm | Hardening cobalt-nickel-chromiumiron alloys |
| FR1160309A (en) * | 1955-11-16 | 1958-07-11 | Birmingham Small Arms Co Ltd | Nickel alloys |
| US2920956A (en) * | 1956-10-08 | 1960-01-12 | Universal Cyclops Steel Corp | Method of preparing high temperature alloys |
| US2912323A (en) * | 1957-09-16 | 1959-11-10 | Int Nickel Co | Cast nickel base alloy for high temperature service |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3542530A (en) | Nickel or cobalt base with a coating containing iron chromium and aluminum | |
| US3164465A (en) | Nickel-base alloys | |
| US2765227A (en) | Titanium carbide composite material | |
| US2948606A (en) | High temperature nickel base alloy | |
| US3087812A (en) | Metallurgical composition | |
| US3150971A (en) | High-temperature tungsten base alloys | |
| US3118763A (en) | Cobalt base alloys | |
| US2780545A (en) | High-temperature alloy | |
| US2202821A (en) | Hard metal alloy | |
| US3113863A (en) | Columbium base alloy | |
| US2747993A (en) | High temperature nickel-base alloy | |
| US2974036A (en) | High temperature cobalt-base alloy | |
| US2860970A (en) | Metal alloy | |
| US2513469A (en) | Alloy articles for use at high temperatures | |
| US2540107A (en) | High-temperature alloys | |
| US2805154A (en) | Nickel-base alloy | |
| US2974037A (en) | High temperature cobalt base alloy | |
| Andrén et al. | Carbide precipitation in chromium steels | |
| US3320036A (en) | Ductile molybdenum composition containing a spinel dispersion | |
| Li et al. | Effect of σ-Phase on the creep properties of Cr25Ni20 stainless steel | |
| US3415641A (en) | Wrought nickel base alloy | |
| US3047381A (en) | High temperature heat and creep resistant alloy | |
| US3026199A (en) | Metal alloy | |
| US2860972A (en) | Molybdenum-cobalt-nickel alloy | |
| US3607250A (en) | High-temperature alloys and articles |