A nickel-based alloy powder for additive manufacturing having in weight %:C:0.09 to 0.17, Ti:3.8 to 4.5, Zr:>0.06, W:1.8 to 2.6, and Al:3.0 to 3.8 is disclosed.

A method and apparatus for energy production comprising providing reactive material containing, at least, an exothermic double electron capture capable isotope and supplying pair-formation energy to at least part of the reactive material to form at least one irreversible double electron capture capable nuclei-pair to produce a net exothermic reaction is disclosed. The reactive material may comprise a metallic alloy. A method and apparatus for energy production comprising heating a three or more element metallic alloy in a chemically inert atmosphere to initiate and/or sustain an exothermic reaction between at least two of the metallic elements of the alloy is herein disclosed. The pressure at the surface of the metallic alloy may be maintained below 1000 atm. The reaction may be initiated, maintained or re-initiated by temperature cycling within a target temperature range. The heat from the reaction may be converted to electric energy by means of a stacked thermophotovoltaic arrangement, comprising a hot surface, a first stage photovoltaic element, a photoemissive LED and a second stage photovoltaic element.

Known protective layers having a high Cr content and additionally a silicon form brittle phases which additionally become brittle under the influence of carbon during use. The protective layer hereof has a composition 22% to 24% cobalt (Co), 10.5% to 11.5% aluminum (AI), 0.2% to 0.4% yttrium (Y) and/or at least one equivalent metal from the group comprising scandium and the rare earth elements, 14% to 16% chrome (Cr), optionally 0.3% to 0.9% tantalum, the remainder nickel (Ni).

Known protective layers having a high Cr-content and a silicone in addition, form brittle phases that embrittle further under the influence of carbon during use. The protective layer according to the invention is composed of 22% to 26% cobalt (Co), 10.5% to 12% aluminum (Al), 0.2% to 0.4% Yttrium (Y) and/or at least one equivalent metal from the group comprising Scandium and the rare earth elements, 15% to 16% chrome (Cr), optionally 0.3% to 1.5% tantal, the remainder nickel (Ni).

A method of braze repair for a superalloy material component. Following a brazing operation on the superalloy material, the component is subjected to an isostatic solution treatment, followed by a rapid cool down to ambient temperature under pressure The conditions of the isostatic solution treatment combined with the cool down at pressure function to both reduce porosity in the component and to solution treat the superalloy material, thereby optimizing superalloy properties without reintroducing porosity in the braze.

A high temperature oxidation resistant nickel-aluminide alloy composition and furnace rolls formed therefrom. The inventive nickel-aluminide alloy composition comprises 0.08-0.1 wt. % Zr, 2.5-3.0 wt. % Mo, 7.5-8.5 wt. % Al, 7.5-8.5 wt. % Cr, about 0.01 wt. % B and the balance being substantially nickel.

A method for producing a powder of a reinforced alloy (ODS alloy) in which the grains forming the particles of the powder comprise a metal matrix, in the volume of which crystalline oxide particles are dispersed, said method comprising the following successive steps: i) providing a powder mixture to be milled comprising a master alloy intended to form the metal matrix and an additional powder comprising at least one intermediate intended to incorporate atoms intended to form the dispersed oxide particles; ii) milling the powder mixture according to a mechanical synthesis process for making a precursor powder; iii) subjecting the precursor powder to a thermal plasma generated by a plasma torch comprising a plasma gas, in order to obtain the reinforced alloy powder.

The method of the invention is particularly suitable for producing an ODS alloy that has optimized characteristics of composition and/or microstructure.

The invention also relates to the ODS alloy powder obtained by the method of production, and the use thereof.

A hydrogen storage alloy suitable for prescribed pretreatment, that is, pretreatment wherein mechanical pulverization is performed after pulverizing a hydrogen storage alloy and absorbing/desorbing hydrogen is provided. The hydrogen storage alloy comprises a parent phase having a CaCu.sub.5-type, that is, an AB.sub.5-type crystal structure, wherein the A site is constituted from a rare earth element containing La; and the B site does not contain Co and contains at least Ni, Al, and Mn, with the ratio (Mn/Al) of the content of Mn (molar ratio) to the content of Al (molar ratio) being 0.60 or more and less than 1.56, and the ratio (La/(Mn+Al)) of the content of La (molar ratio) to the total content of the content of Al (molar ratio) and the content of Mn (molar ratio) being more than 0.92.

Provided are: a method for manufacturing a Ni-based heat-resistant superalloy wire having excellent bending workability; and a Ni-based heat-resistant superalloy wire. The method for manufacturing a Ni-based heat-resistant superalloy wire comprises a rod preparation step for preparing a Ni-based heat-resistant superalloy rod; and a rod processing step in which plastic working having a working rate of 40% or less is repeated several times toward the axis from the circumferential surface of the rod at a temperature of 500° C. or lower until the cumulative working rate reaches 60% or more to reduce the cross-sectional area of the rod. A Ni-based heat-resistant superalloy wire obtained by the manufacturing method has a plastic worked or recrystallized microstructure.

A Ni—Ti-based alloy contains a Ni atom, a Ti atom, and a Si atom. The Ni—Ti-based alloy has a heat-absorbing/generating property.