US1975120A - Alloy - Google Patents
Alloy Download PDFInfo
- Publication number
- US1975120A US1975120A US705285A US70528534A US1975120A US 1975120 A US1975120 A US 1975120A US 705285 A US705285 A US 705285A US 70528534 A US70528534 A US 70528534A US 1975120 A US1975120 A US 1975120A
- Authority
- US
- United States
- Prior art keywords
- per cent
- magnesium
- alloy
- cobalt
- tin
- 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 18
- 239000000956 alloy Substances 0.000 title description 18
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 16
- 229910052749 magnesium Inorganic materials 0.000 description 16
- 239000011777 magnesium Substances 0.000 description 16
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 10
- 229910017052 cobalt Inorganic materials 0.000 description 10
- 239000010941 cobalt Substances 0.000 description 10
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 10
- 238000007669 thermal treatment Methods 0.000 description 4
- 229910000531 Co alloy Inorganic materials 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 229910001128 Sn alloy Inorganic materials 0.000 description 2
- RRXGIIMOBNNXDK-UHFFFAOYSA-N [Mg].[Sn] Chemical compound [Mg].[Sn] RRXGIIMOBNNXDK-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 229910000846 In alloy Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 magnesium-tin-cobalt Chemical compound 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 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
- the invention relates to magnesium base alloys.
- An object of the invention is the development of alloys of this nature containing tin and cobalt.
- magnesium-tin-cobalt alloys may be further improved by suitable thermal treatments.
- a thermal treatment of 19 hours at 525 centigrade followed by quenching increased the strength of the 0.5 per cent cobalt alloy from 18,940 pounds to 23,680 pounds per square inch and the elongation from 5.7 per cent to 8.8 per cent in two inches.
- the tensile strength of the-2.0 per cent cobalt alloy increased from 20,920 pounds to 24,670 pounds per square inch and the elongation increased from 6.3 per cent to 9.2 per cent in two inches.
- the cobalt may be present in amount between about 0.1 per cent and 4.0 per cent and may be added to magnesium-tin alloys containing from about 0.1 per cent to about 20.0 per cent of tin.
- a preferred composition I have used an alloy containing 5.0 per cent of tin and 1.0 per cent of cobalt, the balance being commercial magnesium.
- the alloys are susceptible to variations in their physical properties by thermal treatments at temperatures most effective between about 425 and 525 centigrade and may be given additional aging treatments between about 100 and 200 centigrade. They may be compounded in any of the ways familiar to the art, such as by adding to the molten magnesium bath the alloying element when its melting point is below that of the magnesium, or approximates it, or by adding the 8 alloying element in the form of a magnesiumrich alloy or hardener when its melting point considerably exceeds that of the magnesium.
- the alloys disclosed herein may be extruded over the whole range disclosed, and may be forged or otherwise mechanically deformed when the amountof added alloying elements does not become too great a proportion of the whole.
- magnesium base alloy signifies an alloy containing more than 50 per cent magnesium.
- a magnesium base alloy containing from 0.1 per cent to 20.0 per cent of tin and from 0.1 per cent to 4.0 per cent of cobalt, the balance being substantially all magnesium.
- a magnesium base alloy containing about 5.0 per cent of tin and 1.0 per cent of cobalt, the balance being substantially all magnesium.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Air Bags (AREA)
Description
Patented Oct. 2, 1934 UNITED STATES PATENT OFFICE mesne assignments, to Magnesium Development Corporation, a corporation of Delaware No Drawing. Application January 4, 1934, Serial No. 705,285
2 Claims.
The invention relates to magnesium base alloys. An object of the invention is the development of alloys of this nature containing tin and cobalt.
I have discovered that when cobalt is added to magnesium base alloys containing tin, the resulting alloys undergo an improvement in both tensile strength and elongation. I have also discovered that the magnesium-tin-cobalt alloys may be further improved by suitable thermal treatments.
As an illustration of the effect produced by the addition of cobalt to a magnesium base alloy, 1,.
have made up an alloy of this nature containing 5.0 per cent of tin, the balance being commercial magnesium. This alloy had a tensile strength, in the cast condition, of 18,380 pounds per square inch and an elongation of 5.0 per cent in two inches. A second alloy containing, in addition to 5.0 per cent of tin, 0.5 per cent of cobalt had in the cast condition a tensile strength of 18,940 pounds per square inch and an elongation of 5.7 per cent in two inches. A third alloy containing 2.0 per cent ofcobalt, in addition to 5.0 per cent of tin, had in the cast condition a tensile strength of 20,920 pounds per square inch and an elongation of 6.3 per cent in two inches. It may be observed that the above additions of cobalt have successively increased both strength and elongation.
A thermal treatment of 19 hours at 525 centigrade followed by quenching increased the strength of the 0.5 per cent cobalt alloy from 18,940 pounds to 23,680 pounds per square inch and the elongation from 5.7 per cent to 8.8 per cent in two inches. After the same thermal treatment the tensile strength of the-2.0 per cent cobalt alloy increased from 20,920 pounds to 24,670 pounds per square inch and the elongation increased from 6.3 per cent to 9.2 per cent in two inches.
Another magnesium-tin alloy containing 10.0 per cent -of tin, the balance being commercial magnesium, was made up tocontain, in addition,
1.0 per cent of cobalt. This alloy on being heated for 19 hours at 525 centigrade and quenched had a tensile strength of 23,220 pounds per square inch and an elongation .of 7.8 percent in two inches. After an additional aging treatment of 20 hours at 150 centigrade the tensile strength C9 increased to 26,750 pounds per square inch and the elongation to 9.8 per cent in two inches. In alloys of the type herein discussed the cobalt may be present in amount between about 0.1 per cent and 4.0 per cent and may be added to magnesium-tin alloys containing from about 0.1 per cent to about 20.0 per cent of tin. As a preferred composition I have used an alloy containing 5.0 per cent of tin and 1.0 per cent of cobalt, the balance being commercial magnesium.
The alloys are susceptible to variations in their physical properties by thermal treatments at temperatures most effective between about 425 and 525 centigrade and may be given additional aging treatments between about 100 and 200 centigrade. They may be compounded in any of the ways familiar to the art, such as by adding to the molten magnesium bath the alloying element when its melting point is below that of the magnesium, or approximates it, or by adding the 8 alloying element in the form of a magnesiumrich alloy or hardener when its melting point considerably exceeds that of the magnesium.
The alloys disclosed herein may be extruded over the whole range disclosed, and may be forged or otherwise mechanically deformed when the amountof added alloying elements does not become too great a proportion of the whole.
In this specification and the appended claims the term magnesium base alloy signifies an alloy containing more than 50 per cent magnesium.
I claim:
1. A magnesium base alloy containing from 0.1 per cent to 20.0 per cent of tin and from 0.1 per cent to 4.0 per cent of cobalt, the balance being substantially all magnesium.
2. A magnesium base alloycontaining about 5.0 per cent of tin and 1.0 per cent of cobalt, the balance being substantially all magnesium.
' f ROY E. PAINE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US705285A US1975120A (en) | 1934-01-04 | 1934-01-04 | Alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US705285A US1975120A (en) | 1934-01-04 | 1934-01-04 | Alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1975120A true US1975120A (en) | 1934-10-02 |
Family
ID=24832796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US705285A Expired - Lifetime US1975120A (en) | 1934-01-04 | 1934-01-04 | Alloy |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1975120A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3333956A (en) * | 1964-09-08 | 1967-08-01 | Dow Chemical Co | Magnesium-base alloy |
-
1934
- 1934-01-04 US US705285A patent/US1975120A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3333956A (en) * | 1964-09-08 | 1967-08-01 | Dow Chemical Co | Magnesium-base alloy |
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