Abstract: The present invention relates to a magnesium aluminum alloy with enhanced creep resistance. The alloy contains barium and calcium in low proportions, and possesses a higher creep resistance in comparison to alloys containing rare earth elements. The alloy may additionally include zinc, tin, lithium, manganese, yttrium, neodymium, cerium and/or praseodymium in proportions of up to 7% by weight, respectively.

Abstract: The present invention relates to a corrosion resistant magnesium alloy which can be prepared with a justifiable expenditure of energy from scrap or impure copper containing precursors and displays a ductility such that it can be used as a casting or kneading material. The magnesium alloy contains, relative to the total weight of the magnesium alloy, 1 to 9 wt. % aluminium, 0.6 to 6 wt. % zinc, 0.1 to 2 wt. % manganese, 0 to 2 wt. % rare earth elements, 0.5 to 2 wt. % copper, wherein the weight ratio of aluminium to zinc lies in the range from 1:1 to 2:1.

Abstract: Magnesium-based hydrogen storage alloys with addition of transition and rare earth elements were produced by conventional induction melting and by rapid solidification. The magnesium based-alloys of this invention posses reversible hydrogen storage capacities ranging from 3 to over 6 wt. %, and excellent performance on the hydrogen absorption and desorption kinetics.

Abstract: A nickel metal hydride secondary battery includes hydrogen storage alloy particles in a negative electrode. The hydrogen storage alloy has a composition expressed by a general formula (LaaSmbGdc“A”d)1-wMgwNixAly“T”z, where “A” and “T” each represent at least one element selected from a group consisting of Pr, Nd, etc., and a group consisting of V, Nb, etc., respectively; subscripts a, b, c and d satisfy relationship expressed by a>0, b?0, c>0, 0.1>d?0, and a+b+c+d=1; and subscripts w, x, y and z fall in a range expressed by 0.1?w?0.3, 0.05?y?0.35, 0?z?0.5, and 3.2?x+y+z?3.8.

Abstract: An improved, castable, magnesium-based alloy having good creep resistance, good corrosion resistance, with improved tensile strength and elongation; methods for preparing the alloys; methods for preparing articles from the alloys; and articles, machines, and other devices comprising the same.

Abstract: This invention relates to gadolinium-containing magnesium containing alloys, particularly those which possess high strength combined with corrosion resistance, and an optimized balance of strength and ductility. The described alloys consist of 2.0 to 5.0, preferably 2.3 to 4.6, at % in total of gadolinium and at least one of soluble heavy lanthanides and yttrium, wherein the ratio of the aggregate amount of soluble heavy lanthanides and yttrium to the amount of gadolinium is between 1.25:1 and 1.75:1, from 0 up to 0.3 at % of zirconium, preferably at least 0.03 at %, optionally with zinc, wherein when zinc is present the amount of zinc is such that the ratio of the weight of zinc to the weight of zirconium is preferably less than 2:1, all other lanthanides in an aggregate amount of less than at 0.2 at %, the balance being magnesium, with any other element being present in an amount of no more than 0.2 at %.

Abstract: As a novel biodegradable metallic material the degradation speed of which in vivo can be controlled over a broad scope while achieving desired mechanical properties such as strength, work hardening and ductility without restricting the shape of an implant device, it is intended to provide a magnesium-based biodegradable metallic material which comprises Mg containing Mg as the major composition and having a concentration of inevitable impurities equal to or less than 0.05 atomic %, is free from precipitates or intermetallic compounds, and has an average grain size being regulated to equal to or less than ¼ of the minimum part of the material.

Abstract: Magnesium-based alloys are provided which exhibit improved resistance to creeping and to corrosion, as well as improved strength, and good castability. The alloys are suitable for applications at both ambient and elevated temperatures.

Abstract: A magnesium-based alloy consists of 1.5-4.0% by weight rare earth element(s), 0.3-0.8% by weight zinc, 0.02-0.1% by weight aluminium, and 4-25 ppm beryllium. The alloy optionally contains up to 0.2% by weight zirconium, 0.3% by weight manganese, 0.5% by weight yttrium and 0.1% by weight calcium. The remainder of the alloy is magnesium except for incidental impurities.

Abstract: A magnesium alloy comprising up to about six weight percent zinc and up to about one weight percent cerium may be hot worked to produce an intermediate or final alloy workpiece that exhibits enhanced ductility and strength at room temperature. The addition of zinc and a small amount of cerium may affect the magnesium alloy by increasing strength and ductility, and improving the work hardening behavior.

Abstract: This invention relates to an AE series heat resistant compression casting magnesium alloy containing cerium and lanthanum and the composition ingredients and the weight percentage thereof are as follows: Al: 3%˜5%, Ce: 0.4%˜2.6%, La: 0.4%˜2.6%, Mn: 0.2%˜0.6%, and the remainder is magnesium. The raw material of cerium lanthanum mixture of rare earth used is the residual, cheap and overstocked cerium lanthanum mixture of rare earth obtained from common cerium rich mixture of rare earth after the Nd, Rr with high value and good market have been separated. The mechanical performance of this invention at room temperature and high temperature excels that of AE 44 and AZ 91 alloys, and the minimum creep rate of 1.82×10-9 S-1 and the creep percentage elongation in 100 h of 0.17% at the condition of 200° C. and 70 MPa excel these of AE 44 alloy.

Abstract: Provided is a high-strength and high-toughness magnesium alloy which has practical level of both the strength and the toughness for expanded applications of the magnesium alloys, and is a method for manufacturing thereof. The high-strength and high-toughness magnesium alloy of the present invention contains: a atom % in total of at least one metal of Cu, Ni, and Co; and b atom % in total of at least one element selected from the group consisting of Y, Dy, Er, Ho, Gd, Tb, and Tm, while a and b satisfying the following formulae (1) to (3), 0.2?a?10??(1) 0.2?b?10??(2) 2/3a?2/3<b.

Abstract: A magnesium alloy comprising up to about one weight percent of cerium may be hot worked to produce an intermediate or final alloy workpiece that exhibits enhanced ductility at room temperature. The addition of a small amount of cerium may affect the magnesium alloy by reducing yield strength, refining grain size, and improving the work hardening behavior. Recrystallization during hot deformation of the rare earth containing magnesium material alters the texture of the alloy and orients the grains in a manner that favors basal slip activity. The alloy thus deforms at room temperature by a combination of twinning and slip mechanisms.

Abstract: The invention is to provide a magnesium alloy material such as a magnesium alloy cast material or a magnesium alloy rolled material, excellent in mechanical characteristics and surface precision, a producing method capable of stably producing such material, a magnesium alloy formed article utilizing the rolled material, and a producing method therefor. The invention provides a producing method for a magnesium alloy material, including a melting step of melting a magnesium alloy in a melting furnace to obtain a molten metal, a transfer step of transferring the molten metal from the melting furnace to a molten metal reservoir, and a casting step of supplying a movable mold with the molten metal from the molten metal reservoir, through a pouring gate, and solidifying the molten metal to continuously produce a cast material. In a process from the melting step to the casting step, parts contacted by the molten metal are formed by a low-oxygen material having an oxygen content of 20 mass % or less.

Abstract: Disclosed is a wrought magnesium alloy having excellent strength and extrusion or rolling formability, and a method of producing the same. The wrought magnesium alloy comprises 0.1-1.5 at % group IIIa, 1.0-4.0 at % group IIIb, 0.35 at % or less of one selected from the group consisting of groups IIa, IVa, VIIa, IVb, and a mixture thereof, 1.0 at % or less of group IIb, and a balance of Mg and unavoidable impurities and thus has a second phase composite microstructure. The wrought magnesium alloy of the present invention has high strength, toughness, and formability in addition to the electromagnetic wave shield ability of magnesium. Accordingly, the wrought magnesium alloy is a material useful to portable electronic goods, such as notebook personal computers, mobile phones, digital cameras, camcorders, CD players, PDA, or MP3 players, automotive parts, such as engine room hoods, oil pans, or inner panel of door, or structural parts for airplane.

Abstract: Magnesium-based alloys are provided which exhibit improved resistance to creeping and to corrosion, as well as improved strength, and good castability. The alloys are suitable for applications at both ambient and elevated temperatures.

Abstract: A magnesium-rare earth-yttrium-zinc alloy consists of 0.2-1.5% by weight zinc and rare earth(s) (RE) and yttrium in amounts which fall within a quadrangle defined by lines AB, BC, CD and DA wherein: A is 1.8% RE-0.05% Y, B is 1.0% RE-0.05% Y, C is 0.2% RE-0.8% Y, and D is 1.8% RE-0.8% Y.

Abstract: There are provided a magnesium alloy with a misch metal, a method of producing a wrought magnesium alloy with a misch metal, and a wrought magnesium alloy produced thereby, in which a great deal of misch metal is added to magnesium, and thus refractory eutectic phases or multi-phases are formed into a stable network structure or a stable dispersed phase, thereby inhibiting deformation of a magnesium matrix at a high temperature to maintain a high strength. The magnesium alloy with the misch metal has the formula of Mg100-x-y-gAxByCz, where A is zinc (Zn) or aluminum (Al); B is the misch metal; C is at least one element selected from the group consisting of manganese (Mn), nickel (Ni), copper (Cu), tin (Sn), yttrium (Y), phosphor (P), silver (Ag), and strontium (Sr); and x, y and z are the compositions of 0 at %?x?6 at %, 0.8 at %?y?7 at %, and 0 at %?z?2 at %, respectively.

Abstract: A magnesium alloy having Y, Zn, Ca, Mn, Ag, Ce, Zr, or Si.

Abstract: A refractory magnesium alloy includes magnesium as a principal ingredient, and an element having a radius 9–14% larger than a magnesium atom and a maximum concentration of 2 mass % or larger in a solid solution with magnesium is mixed in an amount not exceeding a maximum amount that can be homogeneously mixed in the solid solution with magnesium, whereby internal strength of grains thereof is enhanced. Alternatively, gadolinium with a content thereof ranging from 0.5 to 3.8 mass % is added, so that remaining part other than the gadolinium is composed of the magnesium and unavoidable impurities. This magnesium alloy serves to inhibit decrease in proof stress and creep deformation, especially primary creep deformation when used at high temperatures, typically at 200° C. The magnesium alloy may be employed for a structural material for a vehicle, so that a lightweight and heat-resistant structural material can be obtained.

Abstract: A medical implant for the body of a person or an animal consists at least partially of a magnesium alloy. The magnesium alloy contains portions of rare earth metals and lithium and optionally yttrium and aluminum. The magnesium alloy preferably contains lithium in a portion of 0.01 to 7 mass %, aluminum in a portion of 0.01 to 16 mass %, optionally yttrium in a portion of 0.01 to 7 mass %, and rare earth metals in a portion of 0.01 to 8 mass %.

Abstract: The present invention relates to a non-combustible magnesium alloy, comprising one of elements of Al at 0.1˜3 wt %, La at 0.1˜3 wt %, Nd at 0.1˜3 wt %, or Y at 0.005˜3 wt %; 0.5˜10 wt % of Ca; and the remainder of conventional magnesium alloy. Alternatively, the present invention entails a non-combustible magnesium alloy comprising 0.005˜4 wt % of multiple additives of two or more types of elements selected from the group consisting of Al, La, Nd and Y; 0.5˜10 wt % of Ca; and the remainder of conventional magnesium alloy. The magnesium alloy of the present invention has high oxidation-resistance, which translates into high manufacturability in air or in the generally non-oxidative atmosphere (SO2, Ar, CO2, N2).

Abstract: In a metalliferous storage material for hydrogen a metal oxide is provided in or on the surface of the metalliferous materialas a catalyst for the hydrogenation or dehydrogenation of the metalliferous storage material.

Abstract: A refractory magnesium alloy includes magnesium as a principal ingredient, and an element having a radius 9-14% larger than a magnesium atom and a maximum concentration of 2 mass % or larger in a solid solution with magnesium is mixed in an amount not exceeding a maximum amount that can be homogeneously mixed in the solid solution with magnesium, whereby internal strength of grains thereof is enhanced. Alternatively, gadolinium with a content thereof ranging from 0.5 to 3.8 mass % is added, so that remaining part other than the gadolinium is composed of the magnesium and unavoidable impurities. This magnesium alloy serves to inhibit decrease in proof stress and creep deformation, especially primary creep deformation when used at high temperatures, typically at 200° C. The magnesium alloy may be employed for a structural material for a vehicle, so that a lightweight and heat-resistant structural material can be obtained.

Abstract: There is provided a magnesium alloy containing mass percent Al: 5% to 7%, Ca: 2% to 4%, Mn: 0.1% to 0.8%, Sr: 0.001% to 0.05% and rare earth elements: 0.1% to 0.6%. If necessary, an allowable content is set in each of Si, Zn, Cu, Ni, Fe and Cl of the unavoidable impurities, with Si not higher than mass percent 0.01%, Zn not higher than mass percent 0.01%, Cu not higher than mass percent 0.008%, Ni not higher than mass percent 0.001%, Fe not higher than mass percent 0.004%, and Cl not higher than mass percent 0.003%. There is also provided a magnesium alloy member injected in the die by using such an alloy.

Abstract: A creep-resistant magnesium alloy having creep resistance superior to AE42 alloy and having relatively high corrosion resistance. The magnesium alloy has superior castability without any generation of open cracks and is less expensive than AE42 alloy for production. The creep-resistant magnesium alloy is made from 1.5 to 4.0 mass % of Al, 0.5 to 1.8 mass % of Si, 0.05 to 0.6 mass % of RE, 0.005 to 1.5 mass % of Sr or Sb, and the reminder made from Mg and unavoidable impurities. Creep resistance is enhanced when 0.3 to 1.5 mass % of Ca is included. Further, corrosion resistance is enhanced when 0.1 to 0.4 mass % of Mn is included.

Abstract: An anodized magnesium piston including a head and skirt for an internal combustion engine. The piston includes a non-fiber-reinforced, magnesium-based alloy including up to 2.5 percent by weight rare earth metals. The piston further includes an external surface, at least a portion of which has a base layer of magnesium fluoride, magnesium oxofluoride, magnesium oxide or a mixture thereof electrochemically anodized thereto.

Abstract: Hydrogen propelled vehicles and fundamentally new magnesium-based hydrogen storage alloy materials which for the first time make it feasible and practical to use solid state storage and delivery of hydrogen to power internal combustion engine or fuel cell vehicles. These exceptional alloys have remarkable hydrogen storage capacity of well over 6 weight % coupled with extraordinary absorption kinetics such that the alloy powder absorbs 80% of its total capacity within 10 minutes at 300° C. and a cycle life of at least 500 cycles without loss of capacity or kinetics.

Abstract: A magnesium based hydrogen storage alloy powder which is useful as a hydrogen supply material for powering internal combustion engine or fuel cell vehicles. The alloy contains greater than about 85 atomic percent magnesium, about 2-8 atomic percent nickel, about 0.5-5 atomic percent aluminum and about 2-7 atomic percent rare earth metals or mixtures of rare earth metals. The rare earth elements may be Misch metal and may predominantly contain Ce and/or La. The alloy may also contain about 0.5-5 atomic percent silicon. The alloys can be modified to store more than 4 wt. % hydrogen, with a reduced hydride bond strength (i.e. about 64 kJ/mole) which allows for economic recovery of the stored hydrogen. Also, they have a plateau pressure about two times greater than pure Mg and comparable bond energies and plateau pressures to Mg2Ni alloys, while reducing the amount of incorporated nickel by 25-30 atomic %. Also, the storage capacity of the alloy is significantly greater than the 3.6 wt. % of Mg2Ni material.

Abstract: A fuel catalyst for improving combustion efficiency is provided that includes at least one hydride producing element, and at least one element of greater activity on the electrolytic scale than the hydride producing element and at least one element of lesser activity on the electrolytic scale than the hydride producing element. The hydride producing element preferably includes an element from at least one of a Group IV and Group V of the periodic table. The element of greater activity and the element of lesser activity preferably includes at least one of zinc, magnesium, aluminum, palladium, silver, copper and cerium. Preferred formulations of the catalyst element include: a) 20-60% wt antimony, 10-30% wt tin, 10-80% wt zinc and 1-5% wt silver; b) 40% wt antimony, 18% wt tin, 40% wt zinc and 2% wt silver; c) 20-60% wt antimony, 10-30% wt tin, 20-80% wt magnesium, 1-8% wt cerium and 0.1-1.0% wt palladium; d) 40% wt antimony, 25 % wt tin, 30% wt magnesium, 4.8% wt cerium and 0.

Abstract: A magnesium base alloy for high pressure die casting (HPDC), providing good creep and corrosion resistance, comprises: at least 91 weight percent magnesium; 0.1 to 2 weight percent of zinc; 2.1 to 5 percent of a rare earth metal component; 0 to 1 weight percent calcium; 0 to 0.1 weight percent of an oxidation inhibiting element other than calcium (e.g., Be); 0 to 0.4 weight percent zirconium, hafnium and/or titanium; 0 to 0.5 weight percent manganese; no more than 0.001 weight percent strontium; no more than 0.05 weight percent silver and no more than 0.1 weight percent aluminum; any remainder being incidental impurities. For making prototypes, gravity (e.g. sand) cast and HPDC components from the alloy have similar mechanical properties, in particular tensile strength. The temperature dependence of the latter, although negative, is much less so than for some other known alloys.

Abstract: A magnesium based alloy for high pressure die casting, comprising at least 83 wt % magnesium; 4.5 to 10 wt % Al; wt % Zn that is comprised in one of the two ranges 0.01 to 1 and 5 to 10; 0.15 to 1.0 wt % Mn; 0.05 to 1 wt % of rare earth elements; 0.01 to 0.2 wt % Sr; 0.0005 to 0.0015 wt % Be; and calcium in an amount higher than 0.3 (wt % Al -4.0).sup.0.5 wt % and lower than 1.2 wt %. The alloy may further comprise incidental impurities. The alloy may comprise at least 88 wt % magnesium, 4.5 to 10 wt % Al, 0.1 to 1 wt % of rare earth elements. The alloy may contain 5 to 10 wt % Zn and 0.1 to 1 wt % of rare earth elements, and wherein the zinc content is related to the aluminum content by the formula: wt % Zn=8.2-2.2 in (wt % Al -3.5).

Abstract: A mechanically alloyed hydrogen storage material having 75-95 atomic percent Mg, 5-15 atomic percent Ni, 0.5-6 atomic percent Mo, and at least one additional element selected from the group consisting of Al, C, Ca, Ce, Co, Cr, Cu, Dy, Fe, La, Mn, Nd, Si, Ti, V, and Zr, preferably between 1-15 atomic %. The mechanically alloyed hydrogen storage preferably contains from 3-15 atomic % C and at least one other element selected from the group consisting of Al, Ca, Ce, Cu, Dy, Fe, La, Mn, and Nd. The hydrogen storage materials are created by mechanical alloying in a milling apparatus under an inert atmosphere, such as argon, or a mixed atmosphere, such as argon and hydrogen. The speed and length of the milling are varied.

Abstract: A magnesium Mg--Al--RE magnesium alloy wherein an amount of a rare earth component may be reduced while optimial tensile strength and durability are obtained. The Alloy further includes a small calcium component. A high degree of creep resistance is obtained. Further, additional copper and/or zinc components may be introduced together, or singly for providing favorable tensile characteristics to the alloy material.

Abstract: A magnesium alloy includes 0.1 to 6.0% by weight of Al, 0.25 to 6.0% by weight of Zn, 0.1 to 4.0% by weight of rare earth element (hereinafter referred to as "R.E."), and balance of Mg and inevitable impurities. Preferably, it includes 1.0 to 3.0% by weight of Al ("a"), 0.25 to 3.0% by weight of Zn ("b") and 0.5 to 4.0% by weight of R.E.: wherein when "b" is in a range, 0.25.ltoreq."b".ltoreq.1.0, "a" and "c" satisfy a relationship, "c".ltoreq."a"+1.0; and when "b" is in a range, 1.0.ltoreq."b".ltoreq.3.0, "a," "b" and "c" satisfy a relationship, "c".ltoreq."a"+"b".ltoreq.(1/2)"c"+4.0; in order to further improve creep properties at elevated temperatures while maintaining enhanced tensile strength at room temperature and up to 100.degree. C. at least.

Abstract: Procedure for the production of a thixotropic magnesium alloy by adding a grain refiner combined with controlled, rapid solidification with subsequent heating to the two-phase area. It is preferable to use a solidification rate of >1.degree. C./s, more preferably >10.degree. C./s. It is essential that the solidification takes place at such a speed that growth of dendrites is avoided. Heating to the two-phase area is carried out rapidly in 1-30 minutes, preferably 2-5 minutes. By heating an alloy comprising 2-8 weight % Zn, 1.5-5 weight % RE, 0.2-0.8 weight Zr balanced with magnesium to a temperature in the two-phase area after casting, the structure will assume a form in which the .alpha.-phase is globular (RE=rare earth metal). The size of the spheres will be dependent on the temperature and the holding time at that temperature and they will be surrounded by a low-smelting matrix. It is preferable that the alloy has a grain size of not greater than <100 .mu.m, more preferably 50-100 .mu.m.

Abstract: An amorphous magnesium alloy has a composition of Mg.sub.a M.sub.b X.sub.c (M is Zn and/or Ga, X is La, Ce, Mm (misch metal), Y, Nd, Pr, Sm and Gd), a is from 65 to 96.5 atomic %, b is from 3 to 30 atomic %, and c is from 0.2 to 8 atomic %). The magnesium alloy has a high specific strength and does not embrittle at room temperature.

Abstract: A magnesium alloy includes 0.1 to 6.0% by weight of Al, 1.0 to 6.0% by weight of Zn, 0.1 to 3.0% by weight of rare earth element (hereinafter referred to as "R.E."), and balance of Mg and inevitable impurities. By thusly adding Al and Zn, the castability, especially the die-castability, is improved. At the same time, the room temperature strength can be improved because the Mg-Al-Zn crystals having a reduced brittleness are dispersed uniformly in the crystal grains. Further, by adding R.E. as aforementioned, the high temperature strength is improved because the Mg-Al-Zn-R.E. crystals having a higher melting point and being less likely to melt are present in the crystal grain boundaries between the Mg-Al-Zn crystals. This magnesium alloy is excellent in castability, can be die-cast, has a higher tensile strength at room temperature, and is satisfactory in high temperature properties and creep properties. Moreover, when the magnesium alloy includes R.E. in a reduced amount of 0.1 to 2.

Abstract: A magnesium alloy comprises magnesium, zinc in the amount of 4.0 to 15.0 weight % and silicon in the amount of 0.5 to 3.0 weight %, the weight % being based on the total amount of the alloy. The magnesium alloy further may contain manganese in the range of 0.2 to 0.4 weight %, beryllium in the range of 5 to 20 ppm by weight or rare earth metals in the range of 0.1 to 0.6 weight.

Abstract: Magnesium base metal alloy sheet is produced by rolling the rolling stock extruded or forged from a billet at a temperature ranging from 200.degree. C. to 300.degree. C. The billet is consolidated from rapidly solidified magnesium based alloy powder that consists essentially of the formula Mg.sub.bal Al.sub.a Zn.sub.b X.sub.c, wherein X is at least one element selected from the group consisting of manganese, cerium, neodymium, praseodymium, and yttrium, "a" ranges from about 0 to 15 atom percent, "b" ranges from about 0 to 4 atom percent, "c" ranges from about 0.2 to 3 atom percent, the balance being magnesium and incidental impurities, with the proviso that the sum of aluminum and zinc present ranges from about 2 to 15 atom percent. The alloy has a uniform microstructure comprised of fine grain size ranging from 0.2-1.0 .mu.m together with precipitates of magnesium and aluminum containing intermetallic phases of a size less than 0.1 .mu.m.

Abstract: The present invention provides high strength magnesium-based alloys which are composed a fine crystalline structure, the alloys having a composition represented by the general formula (I) Mg.sub.a X.sub.b ; (II) Mg.sub.a X.sub.c M.sub.d, (III) Mg.sub.a X.sub.c Ln.sub.e ; or (IV) Mg.sub.a X.sub.c M.sub.d Ln.sub.e (wherein X is one or more elements selected from the group consisting of Cu, Ni, Sn and Zn; M is one or more elements selected from the group consisting of Al, Si and Ca; Ln is one or more elements selected from the group consisting of Y, La, Ce, Nd and Sm or a misch metal of rare earth elements; and a, b, c, d and e are atomic percentages falling within the following ranges: 40.ltoreq.a.ltoreq.95, 5.ltoreq.b.ltoreq.60, 1.ltoreq.c.ltoreq.35, 1 .ltoreq.d.ltoreq.25 and 3.ltoreq.e.ltoreq.25). Since the magnesium-based alloys have a superior combination of properties of high hardness, high strength and good processability, they are very useful in various industrial applications.

Abstract: A bulky amorphous magnesium alloy having heat-resistance and toughness is provided by setting the alloy composition as: Mg.sub.a M.sub.b Al.sub.c X.sub.d Z.sub.e (M is at least one element selected from the group consisting of La, Ce, Mm (misch metal) and Y, X is at least one element selected from the group consisting of Ni and Cu, and Z is at least one element selected from the group consisting of Mn, Zn, Zr, and Ti, and, a=70.about.90 at %, b=2.about.15 at %, c=1.about.9 at %, d=2.about.15 at %, e=0.1.about.8 at %, a+b+c+d+e=100 at %).

Abstract: A method for making a light metal-rare earth metal alloy comprises adding a pellet to a substantially flux-free bath of molten light metal, said pellet including a mixture of rare earth metal-containing compound and one or more light metal powders. On a preferred basis, such mixtures comprise scandium oxide, up to about 10 wt. % aluminum powder and a substantial majority of magnesium powder, all of which are substantially similar in median particle size. This mixture is preferably compacted under a pressure of about 7 kpsi or more, then added to a bath of molten magnesium or molten aluminum to make magnesium-scandium, magnesium-aluminum-scandium, or aluminum-magnesium-scandium alloys therefrom. There is further disclosed a method for making an alloy containing about 7-12 wt. % lithium, about 2-7 wt. % aluminum, about 0.4-2 wt. % scandium, up to about 2 wt. % zinc and up to about 1 wt. % manganese, the balance magnesium and impurities.

Abstract: A magnesium alloy for use in casting is disclosed herein, which contains zinc and a rare earth metal component and has a solidification temperature range of at most 50.degree. C. The magnesium alloy comprises 8.5 to 1.9 % by weight of a rare earth metal mixture consisting essentially of cerium and lanthanum as the rare earth metal component, 6.4 to 4.2% by weight of zinc, and the balance of magnesium, based on the total weight of the magnesium alloy.

Abstract: Magnesium base metal alloy sheet is produced by rolling the rolling stock extruded or forged from a billet at a temperature ranging from 200.degree. C. to 300.degree. C. The billet is consolidated from rapidly solidified magnesium based alloy powder that consists essentially of the formula Mg.sub.bal Al.sub.a Zn.sub.b X.sub.c, wherein X is at least one element selected from the group consisting of manganese, cerium, neodymium, praseodymium, and yttrium, "a" ranges from about 0 to 15 atom percent, "b" ranges from about 0 to 4 atom percent, "c" ranges from about 0.2 to 3 atom percent, the balance being magnesium and incidental impurities, with the proviso that the sum of aluminum and zinc present ranges from about 2 to 15 atom percent. The alloy has a uniform microstructure comprised of fine grain size ranging from 0.2-1.0 .mu.m together with precipitates of magnesium and aluminum containing intermetallic phases of a size less than 0.1 .mu.m.

Abstract: Magnesium base metal alloy sheet is produced by rolling the rolling stock extruded or forged from a billet at a temperature ranging from 200.degree. C. to 300.degree. C. The billet is consolidated from rapidly solidified magnesium based alloy powder that consists of the formula Mg.sub.bal Al.sub.a Zn.sub.b X.sub.c, wherein X is at least one element selected from the group consisting of manganese, cerium, neodymium, praseodymium, and yttrium, "a" ranges from about 0 to 15 atom percent, "b" ranges from about 0 to 4 atom percent, "c" ranges from about 0.2 to 3 atom percent, the balance being magnesium and incidental impurities, with the proviso that the sum of aluminum and zinc present ranges from about 2 to 15 atom percent. The alloy has a uniform microstructure comprised of fine grain size ranging from 0.2-1.0 .mu.m together with precipitates of magnesium and aluminum containing intermetallic phases of a size less than 0.1 .mu.m.

Abstract: Magnesium base metal alloy sheet is produced by rolling the rolling stock extruded or forged from a billet at a temperature ranging from 200.degree. C. to 300.degree. C. The billet is consolidated from rapidly solidified magnesium based alloy powder that consists of the formula Mg.sub.bal Al.sub.a Zn.sub.b X.sub.c, wherein X is at least one element selected from the group consisting of manganese, cerium, neodymium, praseodymium, and yttrium, "a" ranges from about 0 to 15 atom percent, "b" ranges from about 0 to 4 atom percent, "c" ranges from about 0.2 to 3 atom percent, the balance being magnesium and incidental impurities, with the proviso that the sum of aluminum and zinc present ranges from about 2 to 15 atom percent. The alloy has a uniform microstructure comprised of fine grain size ranging from 0.2-1.0 .mu.m together with precipitates of magnesium and aluminum containing intermetallic phases of a size less than 0.1 .mu.m.

Abstract: A composite material having heat resistance at elevated temperatures and excellent mechanical properties to be used for parts of automotive vehicles, especially for pistons, machine parts or aerospace materials is composed of fiber reinforced magnesium alloy as a matrix having a composition of magnesium alloy containing up to 2 to 15 wt %, but preferably 4 to 7 wt % of neodymium or corresponding amount of neodymium-type metals, for example, didymium containing at least 70 wt % of neodymium. The composite material is composed of 70 to 95 vol % of the matrix and 30 to 5 vol % of short alumina fibers as the reinforcement.

Abstract: A dual-phase magnesium-based alloy consisting essentially of about 7-12% lithium, about 2-6% aluminum, about 0.1-2% rare earth metal, preferably scandium, up to about 2% zinc and up to about 1% manganese. The alloy exhibits improved combinations of strength, formability and/or corrosion resistance. There is also disclosed a composite matrix whose metal phase consists essentially of the aforementioned composition.

Abstract: A method for making a light metal-rare earth metal alloy comprises adding a pellet to a bath of molten light metal, said pellet consisting essentially of a mixture of light metal powder and rare earth metal-containing compound. Such pellets, which are made under pressures of about 9 ksi or more, are preferably added to molten baths of aluminum, magnesium or combinations thereof. The light metal powders and rare earth metal-containing compounds that are mixed together to form said pellets are preferably substantially similar in terms of median particle size. This method is suitable for aluminothermically reducing scandium oxide to make aluminum-scandium alloy therefrom.