US2882145A - Magnesium alloys - Google Patents
Magnesium alloys Download PDFInfo
- Publication number
- US2882145A US2882145A US589351A US58935155A US2882145A US 2882145 A US2882145 A US 2882145A US 589351 A US589351 A US 589351A US 58935155 A US58935155 A US 58935155A US 2882145 A US2882145 A US 2882145A
- Authority
- US
- United States
- Prior art keywords
- zirconium
- magnesium
- alloys
- alloy
- 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
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
- C22C23/06—Alloys based on magnesium with a rare earth metal as the next major constituent
Definitions
- zirconium under the conditions contemplated by the invention does not modify the special thermal treatment of the alloy.
- Rare earth metals percent 2-6 Zirconium ..do 0.01-0.05 Magnesium the remainder the composition of the rare earth metals being as follows:
- Alloys of magnesium with rare earth metals and zirconium having the following composition:
- Rare earth metals percent 2 to 6 Zirconium ..do 0.01 to 0.05 Magnesium the remainder and in which the composition of the earth metals in the final alloy is as follows:
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physical Vapour Deposition (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
United States Patent MAGNESIUM ALLOYS Ren Lucien, Neuilly-sur-Seine, and Emile Tetart, Louvie-Juzon, France No Drawing. Application December 28, 1955 Serial No. 589,351
Claims priority, application France December 28, 1954 1 Claim. (Cl. 75-168) (Filed under Rule 47(a) and 35 U.S.C. 116) Percent Neodymium 10 to 50 Lanthanum -l 20 to 75 Praseodymium 5 to 15 Samarium 1 to 17 Cerium less than The same patent also indicates that, taking into account the reaction efficiencies in the reduction of the salts of rare earths by the magnesium, the most favorable results as far as the hot and cold mechanical character-- istics are concerned, are obtained when the final composition of the rare earths in the alloy is as follows:
Percent Neodymium 40 to 65 Lanthanum 25 to 35 Praseodymium 8 to 12 Samarium 0.5 Cerium 2 to 10 On the other hand, it is well known that the introduction of zirconium in the magnesium produces an excellent fineness of grain and improves the mechanical characteristics of the alloy. This effect of zirconium is particularly notable in alloys of magnesium with rare earths.
With the adding of zirconium in the known proportions, that is to say from 0.1 to 1%, to the alloys of magnesium and rare earths referred to above, products might have been expected which had optimum characteristics. Experience has shown, however, that this is not at all the case. There is indeed found a very considerable refinement of grain with excellent characteristics in the rough-cast state or after homogenization by thermal treatment, but the alloys thus obtained do not withstand tempering treatment at 200 to 300 centigrade; after these treatments, their characteristics fall off to a very considerable extent, and this is clearly undesirable in the case of alloys required to be effective while hot.
ice
The applicants have found, on the other hand, and this is the object of the present invention, that very low contents of zirconium such as, for example, in the order of from 0.01 to 0.05%, in the magnesium-rare earths alloys considered never give rise to a weakness during tempering or heat treatment. However, on the other hand, zirconium in the low contents indicated no longer causes a refinement of the grain and, consequently, there is obtained no improvement in mechanical characteristics. This, however, is without importance since, by virtue of the particular composition of the rare earths, the alloy has adequate characteristics. It should be mentioned that, in the case of castings of alloys of this kind and containing 0.01 to 0.05% of zirconium, a greater homogeneity of the alloy has been noted together with the almost complete disappearance of segregations. This is of the utmost importance to the physical characteristics of such parts and completely eliminates the slight degradation to which the elongations of certain massive zones of these parts are sometimes subjected.
The addition of zirconium under the conditions contemplated by the invention does not modify the special thermal treatment of the alloy.
The following sets forth the alloy percentages according to the invention:
Rare earth metals percent 2-6 Zirconium ..do 0.01-0.05 Magnesium the remainder the composition of the rare earth metals being as follows:
Percent 25-35 8-12 Lanthanum Praseodymium Cerium 2-10 Samarium 0.5 Neodymium the remainder, 40-65 What we claim is: Alloys of magnesium with rare earth metals and zirconium, having the following composition:
Rare earth metals percent 2 to 6 Zirconium ..do 0.01 to 0.05 Magnesium the remainder and in which the composition of the earth metals in the final alloy is as follows:
Percent Lanthanum 25 to 35 Praseodymium 8 to 12 Cerium 2 to 10 Samarium 0.5 Neodymium the remainder, 40 to 65 References Cited in the file of this patent OTHER REFERENCES Journal of Metals, vol. 1, issue 12, pages 968-983, December 1949.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2882145X | 1954-12-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2882145A true US2882145A (en) | 1959-04-14 |
Family
ID=9689601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US589351A Expired - Lifetime US2882145A (en) | 1954-12-28 | 1955-12-28 | Magnesium alloys |
Country Status (1)
Country | Link |
---|---|
US (1) | US2882145A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3113991A (en) * | 1959-08-18 | 1963-12-10 | Nuclear Corp Of America | Method of tagging bulk materials |
US3362815A (en) * | 1964-12-10 | 1968-01-09 | Bell Telephone Labor Inc | Low friction alloy bearings |
US4259110A (en) * | 1978-07-07 | 1981-03-31 | Agence Nationale De Valorisation De La Recherche (Anvar) | Process for storing of hydrogen and the use thereof, particularly in engines |
US5336466A (en) * | 1991-07-26 | 1994-08-09 | Toyota Jidosha Kabushiki Kaisha | Heat resistant magnesium alloy |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2224151A (en) * | 1937-02-16 | 1940-12-10 | Alais & Froges & Camarque Cie | Magnesium alloys |
FR920231A (en) * | 1944-07-11 | 1947-04-01 | Magnesium Elektron Ltd | Improvements to magnesium alloys |
FR1109937A (en) * | 1954-08-12 | 1956-02-03 | Rech Etudes Production Sarl | Magnesium-rare earth alloys with high hot mechanical properties |
-
1955
- 1955-12-28 US US589351A patent/US2882145A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2224151A (en) * | 1937-02-16 | 1940-12-10 | Alais & Froges & Camarque Cie | Magnesium alloys |
FR920231A (en) * | 1944-07-11 | 1947-04-01 | Magnesium Elektron Ltd | Improvements to magnesium alloys |
FR1109937A (en) * | 1954-08-12 | 1956-02-03 | Rech Etudes Production Sarl | Magnesium-rare earth alloys with high hot mechanical properties |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3113991A (en) * | 1959-08-18 | 1963-12-10 | Nuclear Corp Of America | Method of tagging bulk materials |
US3362815A (en) * | 1964-12-10 | 1968-01-09 | Bell Telephone Labor Inc | Low friction alloy bearings |
US4259110A (en) * | 1978-07-07 | 1981-03-31 | Agence Nationale De Valorisation De La Recherche (Anvar) | Process for storing of hydrogen and the use thereof, particularly in engines |
US5336466A (en) * | 1991-07-26 | 1994-08-09 | Toyota Jidosha Kabushiki Kaisha | Heat resistant magnesium alloy |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR950704520A (en) | Copper alloy having high strength and conductivity and method of manufacturing | |
US4049426A (en) | Copper-base alloys containing chromium, niobium and zirconium | |
US2882145A (en) | Magnesium alloys | |
US2915390A (en) | Aluminum base alloy | |
US4067750A (en) | Method of processing copper base alloys | |
GB1234866A (en) | Thermal treatment of aluminium-magnesium alloy for improvement of stress-corrosion properties | |
GB1463608A (en) | Magnesium alloys | |
ES342990A1 (en) | High temperature nickel-chromium-iron alloys particularly suitable for steam power applications | |
US2357190A (en) | Copper base alloys | |
GB893189A (en) | Uranium-aluminium alloy containing one or more further elements | |
US2801166A (en) | Alloys of magnesium and rare earths | |
Ivanov et al. | Phase diagrams of certain ternary systems of uranium and thorium | |
US2839394A (en) | Magnesium alloys | |
GB459848A (en) | Improvements in heat resistant alloys | |
US2844463A (en) | Magnesium-base alloys | |
US2609309A (en) | Magnesium alloy and method of treatment | |
US2948608A (en) | Heat treatable alloys of titanium or zirconium | |
GB1154013A (en) | Improved Aluminium Base Cast Alloys | |
US2671039A (en) | Magnesium die casting alloy and process | |
SU150634A1 (en) | High strength aluminum alloy for pouring into the ground | |
US3084082A (en) | Method of age hardening magnetostrictive cores | |
US4981645A (en) | Superalloy compositions | |
Luzhnikov et al. | Transformation during Heat Treatment of Alloys of the Ti-Mo System with Aluminum, Zirconium and Tin Additives | |
DE1758183A1 (en) | Alloy based on pure zinc | |
US2829970A (en) | Beryllium containing nickel, manganese, copper alloys |