Abstract: Binary amorphous alloys of nickel and boron have high mechanical hardness and relatively low melting temperatures. The alloys have the formula Ni.sub.a B.sub.b, where "a" has values of about 81 to 82, 75 and 59 to 72 atom percent and "b" has values of about 18 to 19, 25 and 28 to 41 atom percent.

Abstract: Introduction of beryllium into iron-boron base glassy alloys improves the thermal stability while substantially retaining the saturation moment and significantly reducing the saturation magnetostriction of the base alloy. The alloys of the invention consist essentially of about 6 to 18 atom percent boron, about 2 to 14 atom percent beryllium and about 72 to 85 atom percent iron plus incidental impurities.

Abstract: Metallic glasses having high permeability, low magnetostriction, low ac core loss and high thermal stability are disclosed. In contrast to the prior art in which one, or at most two, of these properties are attained in one metallic glass, all those outstanding properties are achieved in a single metallic glass selected from one of the compositions of the invention. The metallic glasses consist essentially of about 63 to 83 atom percent of at least one metal selected from the group consisting of iron and cobalt, from 0 to about 60% of which metal may be replaced with nickel, about 2 to 12 atom percent of at least one element selected from the group consisting of molybdenum, tungsten, niobium and titanium, and about 15 to 25 atom percent of at least one metalloid element selected from the group consisting of boron, phosphorus and carbon plus incidental impurities.

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: 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: Ductile metal alloys of compositions in the Be-Nb-Zr system are provided. The compositions consist essentially of about 20 to 45 atom percent beryllium, about 2.5 to 20 atom percent niobium and the balance essentially zirconium and incidental impurities. The alloys of the invention, which are suitable for superconducting applications, evidence a combination of critical temperatures of at least about 2 K, critical currents of about 10.sup.3 A/cm.sup.2 and critical fields of about 20 to 60 kOe.

Abstract: Glassy metal alloys of compositions in the Be-Ti-Zr system suitable as temperature sensing elements for resistance thermometers are provided. The compositions consist essentially of about 20 to 45 atom percent beryllium, about 2 to 80 atom percent zirconium, 0 to about 2 atom percent of at least one metal of vanadium, chromium, manganese, iron, nickel and cobalt, and the balance essentially titanium and incidental impurities. The alloys of the invention combine a high temperature coefficient of resistance and negligible temperature-dependent magneto-resistance.