US1868293A - Alloys - Google Patents
Alloys Download PDFInfo
- Publication number
- US1868293A US1868293A US511648A US51164831A US1868293A US 1868293 A US1868293 A US 1868293A US 511648 A US511648 A US 511648A US 51164831 A US51164831 A US 51164831A US 1868293 A US1868293 A US 1868293A
- Authority
- US
- United States
- Prior art keywords
- alloy
- aluminum
- beryllium
- alloys
- molybdenum
- 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
- 229910045601 alloy Inorganic materials 0.000 title description 19
- 239000000956 alloy Substances 0.000 title description 19
- 229910052782 aluminium Inorganic materials 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 229910052790 beryllium Inorganic materials 0.000 description 9
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 9
- 229910052750 molybdenum Inorganic materials 0.000 description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 6
- 239000011733 molybdenum Substances 0.000 description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 5
- 229910052748 manganese Inorganic materials 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- BIOOACNPATUQFW-UHFFFAOYSA-N calcium;dioxido(dioxo)molybdenum Chemical compound [Ca+2].[O-][Mo]([O-])(=O)=O BIOOACNPATUQFW-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C25/00—Alloys based on beryllium
Definitions
- This invention relates to alloys comprising beryllium and aluminum which are characterized by lightness.
- One of the primary objects of the invention is to improve the properties of the beryllium-aluminum alloys by adding other alloying element-s which improve strength, workability, resistance to corrosion, and other properties, as Will further appear.
- I first prepare a stock alloy, preferably hi 'h in beryllium.
- This stock alloy is comprised of beryllium aluminum and molybdenum.
- I melt the beryllium and aluminum, employing a suitable flux, with which I include calcium molybdate. Molybdenum is reduced and enters the alloy.
- the flux On preparation of the stock alloy the flux is cleaned oil and then a cleansing alloy is added, which comprises aluminum, magnesium and manganese. Most of the magnesium burns out.
- the proportions preferably employed are such as to produce an alloy comprised of approximately 70% beryllium,
- the foregoing alloy is more workable, flows better, makes a better casting, has increased strength, and also bendability and is resistant to corrosion.
- this alloy In sheet form, say from fifteen to twenty thousandths thick, this alloy has a strength of about one hundred to one hundred and ten thousand pounds per square inch, depending upon the amount of cold work given.
- the manganese and molybdenum harden the aluminum eutectic.
- the alloy has a relatively low coeflicient of friction and is, therefore, useful as cast for piston rings, pistons and the like. It is further useful in pistons because it has a relatively slight tendency to grow.
- the alloy In castings, the alloy has a tensile strength of about thirty thousand to forty thousand pounds per square inch.
- the alloy is particularly useful for aeroplane Wings and similar parts Where a combination of great lightness, strength and bendability are desired.
- the alloy is much lighter and stronger than duralumin and is much more resistant to corrosion.
- An alloy comprising beryllium, aluminum, manganese and molybdenum, approximately in the following proportions, Be 70%, M11 5%, Mo .6%, and Al the remainder.
- An alloy for machine parts, sheets and the like, wherein lightness combined With strength is desired said alloy including approximately 70% beryllium and approXimately 28.8% aluminum, and said alloy further including approximately 5% of manganese.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
Description
Patented July 19, 1932 UNITED STATES PATENT OFFICE JOSEPH KENT SMITH, OF DETROIT, MICHIGAN, ASSIGNOR TO BERYLLIUM DEVELOP- MENT CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE ALLOYS N0 Drawing.
This invention relates to alloys comprising beryllium and aluminum which are characterized by lightness. One of the primary objects of the invention is to improve the properties of the beryllium-aluminum alloys by adding other alloying element-s which improve strength, workability, resistance to corrosion, and other properties, as Will further appear.
I employ manganese and molybdenum as additional alloying elements, and in the preferred practice of my invention I proceed as follows:
I first prepare a stock alloy, preferably hi 'h in beryllium. This stock alloy is comprised of beryllium aluminum and molybdenum. I melt the beryllium and aluminum, employing a suitable flux, with which I include calcium molybdate. Molybdenum is reduced and enters the alloy.
On preparation of the stock alloy the flux is cleaned oil and then a cleansing alloy is added, which comprises aluminum, magnesium and manganese. Most of the magnesium burns out. The proportions preferably employed are such as to produce an alloy comprised of approximately 70% beryllium,
.6% manganese, .6% molybdenum and the balance has roughly 28% aluminum.
As compared with a 7 Q30 beryllium aluminum alloy, the foregoing alloy is more workable, flows better, makes a better casting, has increased strength, and also bendability and is resistant to corrosion.
In sheet form, say from fifteen to twenty thousandths thick, this alloy has a strength of about one hundred to one hundred and ten thousand pounds per square inch, depending upon the amount of cold work given. The manganese and molybdenum harden the aluminum eutectic. The alloy has a relatively low coeflicient of friction and is, therefore, useful as cast for piston rings, pistons and the like. It is further useful in pistons because it has a relatively slight tendency to grow.
In castings, the alloy has a tensile strength of about thirty thousand to forty thousand pounds per square inch.
If increased springability is desired about Application filed January 27, 1931. Serial No. 511,648.
two per cent. of iron is added and the aluminum content correspondingly reduced.
In sheet form the alloy is particularly useful for aeroplane Wings and similar parts Where a combination of great lightness, strength and bendability are desired. The alloy is much lighter and stronger than duralumin and is much more resistant to corrosion.
I claim:
1. An alloy comprising beryllium, aluminum, manganese and molybdenum, approximately in the following proportions, Be 70%, M11 5%, Mo .6%, and Al the remainder.
2. An alloy for machine parts, sheets and the like, wherein lightness combined With strength is desired, said alloy including approximately 70% beryllium and approXimately 28.8% aluminum, and said alloy further including approximately 5% of manganese.
In testimony whereof I have hereunto signed my name.
JOSEPH KENT SMITH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US511648A US1868293A (en) | 1931-01-27 | 1931-01-27 | Alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US511648A US1868293A (en) | 1931-01-27 | 1931-01-27 | Alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1868293A true US1868293A (en) | 1932-07-19 |
Family
ID=24035812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US511648A Expired - Lifetime US1868293A (en) | 1931-01-27 | 1931-01-27 | Alloys |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1868293A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2474038A (en) * | 1945-03-03 | 1949-06-21 | Metals & Controls Corp | Composite metal |
-
1931
- 1931-01-27 US US511648A patent/US1868293A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2474038A (en) * | 1945-03-03 | 1949-06-21 | Metals & Controls Corp | Composite metal |
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