Abstract: Nickel and iron-nickel base alloys are described together with a rapid solidification process used in the preparation thereof to provide materials useful in the fabrication of parts subject to high temperature operating conditions. The alloys include commercial nickel base superalloys to which a specified amount of boron is added.

Abstract: Metallic glass powder is prepared by heating a solid metallic glass body to a temperature below its glass transition temperature for time sufficient to effect embrittlement, followed by comminution of the embrittled metallic glass body.

Abstract: A method of fabricating aluminum alloys containing finely dispersed aluminum-transition metal intermetallic phases is disclosed. The alloys are subjected to melt spinning to form a brittle filament consisting in large measure of a metastable face-centered cubic solid solution; this is then pulverized to a staple or powder configuration; the power or staple is consolidated using conventional techniques. Upon heat treatment, the solid solution decomposes into a structure consisting of an aluminum alloy matrix of conventional composition containing a fine uniform dispersion of the intermetallic phase, the heat-treated alloy being ductile. The heat-treated alloys possess high strength, especially at elevated temperatures. Preferred alloys are disclosed which contain 10 to 15 wt % Fe.

Abstract: An apparatus for making metallic glass powder is disclosed. A jet of a molten glass forming metal alloy is impinged under an acute angle against the inner surface of a rotating cylindrical chill body, whereon it is atomized into a stream of droplets of molten alloy, which again impinge on the chill surface to be rapidly quenched into metallic glass powder.

Abstract: Alloys having compositions similar to commercial tool steels, but modified by the addition of 0.1 to 1.5 wt. % boron are disclosed. The alloys are subjected to a rapid solidification processing (RSP) technique, producing cooling rates between 10.sup.5 -10.sup.7 .degree.C./sec. The as-quenched RSP ribbon or powder, etc. consists essentially of a single phase with a body centered cubic structure. After selected heat treatments, the rapidly solidified alloys have a microstructure consisting of ultrafine metallic carbides and metallic borides dispersed in an iron rich matrix and thus have high hardness, wear resistance and high-temperature stability. These final structures have improved properties for applications, e.g., where standard high speed tool steels are now utilized.

Abstract: Alloys, of iron, cobalt, nickel and chromium containing both metalloids and refractory metals are disclosed. The alloys are rapidly solidified at cooling rates of 10.sup.5 -10.sup.7 .degree. C./sec so as to produce an ultrafine grained metastable crystal structure having enhanced compositional homogeneity. The as-quenched metastable alloys are brittle, permitting pulverization, if desired. Heat treatment is used to convert the metastable brittle alloys into ductile alloys with primary grains of ultrafine grain size which contain an ultrafine dispersion of boride as well as carbide and/or silicide particles. The powders or ribbons can be consolidated into bulk parts. The heat treated alloys possess good mechanical properties, in particular high strength and hardness, as well as good corrosion resistance for selected compositions, making them suitable for many engineering applications.

Abstract: Metallic glass powder is prepared by heating a solid metallic glass body to a temperature below its glass transition temperature for time sufficient to effect embrittlement, followed by comminution of the embrittled metallic glass body.

Abstract: Glassy iron, nickel and cobalt rich alloys that contain at least one of molybdenum, tungsten, titanium, chronium and vanadium, together with low boron content, are disclosed. The alloys consist essentially of about 3 to 10 atom percent boron, about 3 to 25 atom percent of at least one member selected from the group consisting of molybdenum, tungsten, titanium, chromium and vanadium, and about 72 to 86 atom percent of at least one member selected from the group consisting of iron, nickel, cobalt and manganese. The glassy alloys are readily formed in the amorphous state and are characterized by high hardness, high yield strengths and excellent thermal stability.

Abstract: Iron group-boron base glassy alloys are disclosed which evidence improved ultimate tensile strengths, hardnesses and crystallization temperatures as compared with prior art glassy alloys. The alloys have the formulaM.sub.a M'.sub.6 M".sub.c B.sub.dwhere M is one iron group element (iron, cobalt or nickel), M' is at least one of the two remaining iron group elements, M" is at least one element of vanadium, manganese, molybdenum, tungsten, niobium and tantalum, "a" ranges from about 40 to 87 atom percent, "b" ranges from 0 to about 47 atom percent, "c" ranges from 0 to about 20 atom percent and "d" ranges from about 26 to 28 atom percent, with the proviso that "b" and "c" cannot both be zero simultaneously.

Abstract: A method for making metallic glass powder is disclosed. A jet of a molten glass forming metal alloy is impinged under an acute angle against the inner surface of a rotating cylindrical chill body, whereon it is atomized into a stream of droplets of molten alloy, which again impinge on the chill surface to be rapidly quenched into metallic glass powder.

Abstract: Glassy alloys containing iron, cobalt and nickel plus molybdenum and/or tungsten, together with low boron content, are disclosed. The glassy alloys of the invention consist essentially of about 5 to 10 atom percent boron, about 5 to 15 atom percent molybdenum and/or tungsten and the balance essentially iron, cobalt and nickel plus incidental impurities. Each of the iron group metals must be present in an amount of at least about 5 atom percent. The glassy alloys evidence hardness values of at least about 1000 Kg/mm.sup.2, ultimate tensile strengths of at least about 350 Kpsi and crystallization temperatures of at least about 445.degree. C.

Abstract: Zirconium alloys containing at least two of the transition metal elements of iron, cobalt and nickel are disclosed. The alloys consist essentially of at least two elements selected from the group consisting of about 1 to 27 atom percent iron, about 1 to 43 atom percent cobalt and about 1 to 42 atom percent nickel, balance essentially zirconium plus incidental impurities. The alloys in polycrystalline form are capable of being melted and rapidly quenched to the glassy state. Substantially totally glassy alloys of the invention evidence unusually high resistivities of over 200 .mu..OMEGA.-cm.

Abstract: Metal alloy filaments having improved surface characteristics and enhanced mechanical properties are extracted from a source of molten metal alloy using a quenching wheel in a partial vacuum.

Abstract: Introduction of beryllium into iron-boron base glassy alloys improves the thermal stability while substantially retaining the saturation moment of the base alloy. The alloys of the invention consist essentially of about 10 to 18 atom percent boron, about 2 to 10 atom percent beryllium and about 72 to 80 atom percent iron plus incidental impurities.

Abstract: Zirconium-titanium alloys containing at least one of the transition metal elements of iron, cobalt, nickel and copper are disclosed. The alloys consist essentially of about 1 to 64 atom percent titanium plus at least one element selected from the group consisting of about 15 to 27 atom percent iron, about 15 to 43 atom percent cobalt, about 15 to 42 atom percent nickel and about 35 to 68 atom percent copper, balance essentially zirconium plus incidental impurities, with the proviso that when iron is present, the maximum amount of titanium is about 25 atom percent, when cobalt is present, the maximum amount of titanium is about 54 atom percent and when nickel is present, the maximum amount of titanium is about 60 atom percent. The alloys in polycrystalline form are capable of being melted and rapidly quenched to the glassy state. Substantially totally glassy alloys of the invention evidence unusually high electrical resistivities of over 200 .mu..OMEGA.-cm.

Abstract: Several iron-base glassy alloys in the Fe-Cr-Mo-B system have very high tensile strengths, ranging from about 550 to 700 Kpsi. These alloys consist essentially of about 56 to 68 atom percent iron, about 4 to 9 atom percent chromium, about 1 to 6 atom percent molybdenum and about 27 to 29 atom percent boron plus incidental impurities.

Abstract: Glassy metal alloys which include substantial amounts of one or more of the refractory metals of molybdenum, tungsten, tantalum and niobium evidence both high thermal stability, with a high crystallization temperature of at least about 700.degree. C, and a high hardness of at least about 1000 kg/mm.sup.2.

Abstract: Continuous filaments of zirconium-copper glassy alloys containing at least one of the transition metal elements of iron, cobalt and nickel are disclosed. The filaments are substantially totally glassy and have a composition consisting essentially of about 1 to 68 atom percent copper plus at least one element selected from the group consisting of about 1 to 29 atom percent iron, about 1 to 43 atom percent cobalt and about 1 to 42 atom percent nickel, balance essentially zirconium plus incidental impurities. The glassy alloy filaments of the invention evidence unusually high electrical resistivities of over 200 .mu..OMEGA.-cm.

Abstract: Ferromagnetic substitutional solid solution alloys characterized by high saturation magnetization and having a bcc structure are provided. The alloys consist essentially of about 4 to 12 atom percent boron, balance essentially iron plus incidental impurities.

Abstract: Amorphous metal alloys are prepared from titanium-beryllium base compositions comprising about 48 to 68 atom percent titanium and about 32 to 52 atom percent beryllium, with up to about 10 atom percent of beryllium replaced by additional alloying elements such as transition metals and metalloids. These alloys evidence high strength, good ductility and low density. The alloys are potentially useful in applications requiring a high strength-to-weight ratio.