US2003524A - Alloy - Google Patents
Alloy Download PDFInfo
- Publication number
- US2003524A US2003524A US559696A US55969631A US2003524A US 2003524 A US2003524 A US 2003524A US 559696 A US559696 A US 559696A US 55969631 A US55969631 A US 55969631A US 2003524 A US2003524 A US 2003524A
- Authority
- US
- United States
- Prior art keywords
- aluminum
- alloy
- crucible
- magnesium
- alloys
- 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
- 239000000956 alloy Substances 0.000 title description 16
- 229910045601 alloy Inorganic materials 0.000 title description 15
- 229910052782 aluminium Inorganic materials 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 9
- 229910052749 magnesium Inorganic materials 0.000 description 9
- 239000011777 magnesium Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052720 vanadium Inorganic materials 0.000 description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 229910001092 metal group alloy Inorganic materials 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 229910000737 Duralumin Inorganic materials 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910001051 Magnalium Inorganic materials 0.000 description 1
- 101100400378 Mus musculus Marveld2 gene Proteins 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
Definitions
- This invention relates to light metal alloys having an aluminum or magnesium base, and provides improvements therein.
- the present invention provides improved light metal alloys having greater tensile strength, greater resistance to fatigue, and greater resistance to corrosion compared with duralumin and magnalium, and which are tough, ductile and machineable. Alloys of the present invention further possess a good electrical conductivity.
- Alloys according to the present invention have an aluminum or magnesium base and contain boron, vanadium, zinc, some magnesium when aluminum is the base and some aluminum when magnesium is the base, the range thereof in the alloys being approximately in percent by weight as follows:
- Numeral I4 designates a vacuumpump connected to the interior of the crucible preferably through a tank I5.
- Numeral i6 designates heating coils or windings around and beneath crucible Hl connected to a supply I8 of elee- 5 tric current.
- Numeral 20 designates a mold in which the alloy may be cast. The mold 2l) is contained in a closed chamber 22 which is connected to vacuum pump I4 through tank I5.
- the metals of which the alloys are composed, 10 as set forth above, and.- within the ranges set forth above, are introduced into the crucible I0, with the metal constituting the base surrounding the other metals.
- the cover I2 is sealed onto the crucible, and a high vacuum produced in the interiors of the crucible and chamber 22, an equilibrium of vacuum being maintained during heating in chamber 22 and crucible I0.
- Electric current in the coils I6 heats the crucible'and the metals contained therein. Fusion is effected at a temperature of approximately 700-800 Centigrade, this temperature being maintained for about 30 minutes for a 1/,2 lpound charge.
- the melt is run into the mold 20 whereupon the alloy is solidied or formed into an ingot or casting. by the chill of the mold.
- a siphon tube 24 passing through the bottom of crucible I0 into the top of chamber 22 above mold 20, may be provided.4
- the pressure in crucible Ill may be raised (by admitting air thereto) while the vacuum is maintained in chamber 22, which results in the molten alloy in crucible I0 being siphoned through tube 24 into mold 20.
- an electrical resistance heater 30 surrounding tube 24 may be provided.
- the cast metal is allowed to stand'in the mold under vacuum until the temperature falls to a suitable or desired degree, whereupon air may be admitted and the cooling accelerated.
- the cast alloy is preferably aged by either immersing in hot oil or by other suitable and well-known methods.
- the alloys hereinbefore described are light, dense, tough, ductile, possess great tensile strength, are highly conductive electrically and Percent Boron .75 Vanadium .25 Magnesium 1.
- Aluminum 97 show that it has a tensile strength of 35,000 to 40,000 pounds pei ⁇ square inch, is tough, ductile, malleable and machineable, and after immersion in ve percent sulphuric acid for one week showed no visible attack when examined under a microscope, and has a specic gravity of about 2.8.
Description
June 4, 1935. H WARNER 2,003,524
ALLOY Original Filed Aug. 27, 1931 Vacuum f6 f6 7210/( 'Il VIVI l v Hill! Vacuum Pam/0 Patented June 4, 1935 NlTED STATES PATENT oFFlcE ALLOY tion of Delaware Application August 27, 1931, Serial No. 559,696 Renewed November 1, 1934 2 Claims.
This invention relates to light metal alloys having an aluminum or magnesium base, and provides improvements therein.
Industry is greatly interested in light metal e alloys for structural usanotably in connection with air-craft, motors, etc. For structural use the light alloys duralumin andmagnalium are probably the most satisfactory at present used. There remains nevertheless a want for a chanical or physical properties than possessed by those now on the market, notably better tensile strength and greater resistance to fatigue; and better chemical properties, notably greater resistance to corrosion.
The present invention provides improved light metal alloys having greater tensile strength, greater resistance to fatigue, and greater resistance to corrosion compared with duralumin and magnalium, and which are tough, ductile and machineable. Alloys of the present invention further possess a good electrical conductivity.
Alloys according to the present invention have an aluminum or magnesium base and contain boron, vanadium, zinc, some magnesium when aluminum is the base and some aluminum when magnesium is the base, the range thereof in the alloys being approximately in percent by weight as follows:
ao Aluminum base Percent Boron 0.25 to 1.5 Magnesium 0.5 to 1.5 Vanadium 0.25 to 1. Zinc 1. to 4. 35 Aluminum 98. m92.
Magnesium base Percent Boron 0.25 to 1.5 Aluminum 0.5 to 1.5 49 Vanadium 0.25to 1..
Zinc 1. to 4. Magnesium 98. to 92.
5 mina as indicated at II, sealed with a vacuumlight metal alloy or alloys possessing better metight cover I 2. Numeral I4 designates a vacuumpump connected to the interior of the crucible preferably through a tank I5. Numeral i6 designates heating coils or windings around and beneath crucible Hl connected to a supply I8 of elee- 5 tric current. Numeral 20 designates a mold in which the alloy may be cast. The mold 2l) is contained in a closed chamber 22 which is connected to vacuum pump I4 through tank I5.
The metals of which the alloys are composed, 10 as set forth above, and.- within the ranges set forth above, are introduced into the crucible I0, with the metal constituting the base surrounding the other metals. The cover I2 is sealed onto the crucible, and a high vacuum produced in the interiors of the crucible and chamber 22, an equilibrium of vacuum being maintained during heating in chamber 22 and crucible I0. Electric current in the coils I6 heats the crucible'and the metals contained therein. Fusion is effected at a temperature of approximately 700-800 Centigrade, this temperature being maintained for about 30 minutes for a 1/,2 lpound charge.
After the fusion has been ycompleted as aforesaid and while a high vacuum is maintained in chamber 22, the melt is run into the mold 20 whereupon the alloy is solidied or formed into an ingot or casting. by the chill of the mold. For running the melt into mold 20 a siphon tube 24, passing through the bottom of crucible I0 into the top of chamber 22 above mold 20, may be provided.4 By manipulating cocks 21, 28 in the lines from the vacuum tank I5, to crucible I0 and chamber 22 respectively, the pressure in crucible Ill may be raised (by admitting air thereto) while the vacuum is maintained in chamber 22, which results in the molten alloy in crucible I0 being siphoned through tube 24 into mold 20. For preventing freezing or solidication of the alloy in tube 24, an electrical resistance heater 30 surrounding tube 24, may be provided. The cast metal is allowed to stand'in the mold under vacuum until the temperature falls to a suitable or desired degree, whereupon air may be admitted and the cooling accelerated. After cooling, the cast alloy is preferably aged by either immersing in hot oil or by other suitable and well-known methods.
The alloys hereinbefore described are light, dense, tough, ductile, possess great tensile strength, are highly conductive electrically and Percent Boron .75 Vanadium .25 Magnesium 1. Zinc- 1. Aluminum 97 show that it has a tensile strength of 35,000 to 40,000 pounds pei` square inch, is tough, ductile, malleable and machineable, and after immersion in ve percent sulphuric acid for one week showed no visible attack when examined under a microscope, and has a specic gravity of about 2.8.
What is claimed is: 1. An alloy of aluminum, magnesium, boron, vanadium and zinc (aluminum being the base) within the following ranges:
Percent Boron .25 to 1.5 Magnesium .5 to 1.5 Vanadium ,25 t0 1, Zinc 1. to 4. Aluminum 98. to 92.
2. An @lloy containing substantially threefourths percent boron, one-quarter percent vanadium, one percent magnesium, one percent zinc and ninety-seven percent aluminum.
THOMAS H. WARNER.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US559696A US2003524A (en) | 1931-08-27 | 1931-08-27 | Alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US559696A US2003524A (en) | 1931-08-27 | 1931-08-27 | Alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2003524A true US2003524A (en) | 1935-06-04 |
Family
ID=24234642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US559696A Expired - Lifetime US2003524A (en) | 1931-08-27 | 1931-08-27 | Alloy |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2003524A (en) |
-
1931
- 1931-08-27 US US559696A patent/US2003524A/en not_active Expired - Lifetime
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