US2073515A - Alloy - Google Patents
Alloy Download PDFInfo
- Publication number
- US2073515A US2073515A US709969A US70996934A US2073515A US 2073515 A US2073515 A US 2073515A US 709969 A US709969 A US 709969A US 70996934 A US70996934 A US 70996934A US 2073515 A US2073515 A US 2073515A
- Authority
- US
- United States
- Prior art keywords
- magnesium
- per cent
- alloy
- tensile strength
- calcium
- 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 17
- 239000000956 alloy Substances 0.000 title description 17
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 21
- 229910052749 magnesium Inorganic materials 0.000 description 21
- 239000011777 magnesium Substances 0.000 description 21
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 6
- 229910052791 calcium Inorganic materials 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- 229910052788 barium Inorganic materials 0.000 description 5
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 5
- 229910052712 strontium Inorganic materials 0.000 description 4
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 3
- 150000001342 alkaline earth metals Chemical class 0.000 description 3
- 229910002056 binary alloy Inorganic materials 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000126 substance 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
- C22C23/00—Alloys based on magnesium
Definitions
- This invention relates to magnesium base alloys and it isparticularly concerned with alloys of magnesium and certain alkaline earth metals.
- My invention is predicated on the discovery that calcium, barium and/or strontium can be added to magnesium to form a moderately strong and useful alloy.
- These elements for the purposes of my invention constitute a single class of substances wherein any one member'of the class may be substituted for another member.
- I may, however, use more than one of the metals in combination with magnesium.
- the total amount of added elements should not exceed about 4.5 per cent although preferably less than 4 per cent should be employed.
- the same limitations apply tothe minimum amounts that have been stated hereinabove, namely that in no case should a total of less than 0.5 per cent be used, and preferably not less than 1 per cent.
- the alloys may be made in the usual manner that magnesium base alloys are compounded, the alloy ingredients being preferably-added in metallic form or as a rich alloy.
- magnesium as used herein and in the appended claims refers to the commercially pure metal that contains the usual impurities.
- a magnesium base-alloy composed of magnesium and about 1 per cent calcium.
- a magnesium base alloy composed of magnesium and about 4 per cent calcium.
- a magnesium base alloy composed of magnesium and about 1 per centbarium.
Description
Patented Mar. 9,1937
PATENT OFFICE 2,073,515 ALLOY- Edward F. Fischer, Cleveland, Ohio, assignor, by mesne assignments, to Magnesium Develop- ,ment Corporation,
No Drawing. Application February Serial No. 500,969
41 Claims.
This invention relates to magnesium base alloys and it isparticularly concerned with alloys of magnesium and certain alkaline earth metals.
Commercially pure magnesium has been used in a very limited way as a structural material because of its relatively low strength. 0n the other hand the extreme light weight of the metal commends it for use where weight is a paramount. consideration. It is an object of my invention to provide an alloy which utilizes the lightness of weight of magnesium and combines it with sufiicient strength to produce a satisfactory structural material. It is also an object of my invention to provide an alloy that not only has the requisite strength but does not readily disintegrate under corrosive conditions. A further object is to produce an alloy of simple composition that can be easily compounded under commercial foundry conditions.
My invention is predicated on the discovery that calcium, barium and/or strontium can be added to magnesium to form a moderately strong and useful alloy. These elements for the purposes of my invention, constitute a single class of substances wherein any one member'of the class may be substituted for another member.
Contrary to what-would have been expected I have found thatfrom about 0.5 to 4.5 per cent of these alkaline earth metals improve the structural quality of magnesium without deleterious effect on fabricating properties. Binary alloys of magnesium with these metals cast well without excessive oxidation and can be extruded in a satisfactory manner but they are not well adapted to hot working such as hammer forging. Such alloys possess a greater strength than the pure metal magnesium while at the sametime retaining substantially the ductility of the unalloyed metal. e
A binary alloy of magnesium and 1 per cent calcium, for example, that was made up, had a tensile strength of about 29,600 pounds per square inch and an elongation of about 8 per cent in the as-extruded condition. An increase 45 in calcium to 4 per cent produced a corresponding increase in tensile strength which amounted to about 34,500 pounds per square inch with an elongation of approximately 5.5 per cent. The
.addition of barium and strontium produces simiacorporation of Delaware iar increases in tensile strength. For example, in the extruded condition a binary alloy of magnesium and 1 per cent barium had a tensile strength of about 33,800 pounds per square inch and an elongation of 6.2 per cent. A similar alloy containing 1 per cent of strontium had a tensile strength of about 31,600 pounds per square inch and an elongation of 10.7 per cent in two inches. An alloy containing 4' per cent barium had still higher tensile strength, namely, 37,000 pounds per square inch. Commercially pure magnesium under similar conditions has a tensile strength of about 27,000 pounds per square. inch and an elongation of about 5.5 per cent. For most purposes I prefer to use from about 1 to 4 per cent of the alkaline earth metals.
I may, however, use more than one of the metals in combination with magnesium. In such cases the total amount of added elements should not exceed about 4.5 per cent although preferably less than 4 per cent should be employed. The same limitations apply tothe minimum amounts that have been stated hereinabove, namely that in no case should a total of less than 0.5 per cent be used, and preferably not less than 1 per cent.
The alloys may be made in the usual manner that magnesium base alloys are compounded, the alloy ingredients being preferably-added in metallic form or as a rich alloy.
The termmagnesium as used herein and in the appended claims refers to the commercially pure metal that contains the usual impurities.
I claim:
1. A magnesium base-alloy composed of magnesium and about 1 per cent calcium.
2. A magnesium base alloy containing alloying metal in an amountranging from about 1.0 per cent to 4.0 per cent, said alloying metal being selected from the alkaline earth elements calcium, barium and strontium, the balance being magnesium.
3. A magnesium base alloy composed of magnesium and about 4 per cent calcium.
4. A magnesium base alloy composed of magnesium and about 1 per centbarium.
mwsao F. FISCR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US709969A US2073515A (en) | 1934-02-06 | 1934-02-06 | Alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US709969A US2073515A (en) | 1934-02-06 | 1934-02-06 | Alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2073515A true US2073515A (en) | 1937-03-09 |
Family
ID=24852069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US709969A Expired - Lifetime US2073515A (en) | 1934-02-06 | 1934-02-06 | Alloy |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2073515A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2464918A (en) * | 1945-03-22 | 1949-03-22 | Magnesium Elektron Ltd | Magnesium base alloys |
| US2625473A (en) * | 1950-09-08 | 1953-01-13 | Meehanite Metal Corp | Lithium modified magnesium treatment of cast iron |
| US5292003A (en) * | 1993-09-29 | 1994-03-08 | Baghdassarian Ivan D | Combined gift box and display packaging |
| DE19915276A1 (en) * | 1999-04-03 | 2000-10-05 | Volkswagen Ag | Production of a magnesium alloy used e.g. in the manufacture of gear housing comprises extruding the alloy with a specified deforming degree |
| US6342180B1 (en) | 2000-06-05 | 2002-01-29 | Noranda, Inc. | Magnesium-based casting alloys having improved elevated temperature properties |
| US20170095590A1 (en) * | 2010-07-02 | 2017-04-06 | University Of Florida Research Foundation, Inc. | Bioresorbable metal alloy and implants |
-
1934
- 1934-02-06 US US709969A patent/US2073515A/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2464918A (en) * | 1945-03-22 | 1949-03-22 | Magnesium Elektron Ltd | Magnesium base alloys |
| US2625473A (en) * | 1950-09-08 | 1953-01-13 | Meehanite Metal Corp | Lithium modified magnesium treatment of cast iron |
| US5292003A (en) * | 1993-09-29 | 1994-03-08 | Baghdassarian Ivan D | Combined gift box and display packaging |
| DE19915276A1 (en) * | 1999-04-03 | 2000-10-05 | Volkswagen Ag | Production of a magnesium alloy used e.g. in the manufacture of gear housing comprises extruding the alloy with a specified deforming degree |
| US6342180B1 (en) | 2000-06-05 | 2002-01-29 | Noranda, Inc. | Magnesium-based casting alloys having improved elevated temperature properties |
| US20170095590A1 (en) * | 2010-07-02 | 2017-04-06 | University Of Florida Research Foundation, Inc. | Bioresorbable metal alloy and implants |
| US11491257B2 (en) * | 2010-07-02 | 2022-11-08 | University Of Florida Research Foundation, Inc. | Bioresorbable metal alloy and implants |
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