Method for grain refinement of a beryllium article
AssigneeMaterion Corporation
InventorAndrew Ruzek
Life of this patent
Estimating the term…
Abstract
Methods for grain refinement of beryllium articles are disclosed. Grain refinement allows the beryllium article to have beneficial properties in terms of strength and durability. One method stabilizes the β-phase of the beryllium that is precipitated after cycling above a temperature that is greater than or equal to the beta transus temperature.
Claims20
A method of grain refining a beryllium-based article, the method comprising:
- combining beryllium and at least one stabilizer comprising at least one metal being selected from the group consisting of cobalt, copper, nickel, and iron to form a pre-alloy composition;
- depositing a layer comprising the pre-alloy composition on a surface;
- cycling at least a portion of the layer above a temperature that is greater than or equal to the beta transus temperature of the pre-alloy composition;
- precipitating a β-phase of the beryllium in the layer;
- and
- repeating the depositing/cycling/precipitating for one or more successive layers, wherein each of the successive layers comprises the pre-alloy composition and wherein the beryllium-based article has an average grain size from 1 to 80 microns.
A method of grain refining a beryllium-based article, the method comprising:
- depositing a layer on a surface, the layer comprising a pre-alloy composition comprising beryllium and at least one stabilizer comprising at least one metal being selected from the group consisting of cobalt, copper, nickel, and iron;
- cycling at least a portion of the layer above a temperature that is greater than or equal to the beta transus temperature of the pre-alloy composition;
- precipitating a β-phase of the beryllium in the layer;
- and
- repeating the depositing/cycling/precipitating for one or more successive layers, wherein each of the successive layers comprises the pre-alloy composition and wherein the beryllium-based article has an average grain size from 1 to 80 microns.
A beryllium-based article comprising:
- beryllium;
- and
- at least one stabilizer comprising at least one metal being selected from the group consisting of cobalt, copper, nickel, and iron,
- wherein the beryllium-based article has an average grain size from 1 to 80 microns, and
- wherein the beryllium-based article comprises from 1 at. % to 99 at. % of β-phase species based on the total beryllium in the beryllium-based article, wherein the beryllium-based article is produced by:
- combining beryllium and at least one stabilizer comprising at least one metal being selected from the group consisting of cobalt, copper, nickel, and iron to form a pre-alloy composition;
- depositing a layer comprising the pre-alloy composition on a surface;
- cycling at least a portion of the layer above a temperature that is greater than or equal to the beta transus temperature of the pre-alloy composition;
- precipitating a β-phase of the beryllium in the layer;
- and
- repeating the depositing/cycling/precipitating for one or more successive layers.
The beryllium-based article of 18, comprising from 40 to 95% by weight of beryllium.
The beryllium-based article of 18, comprising from 5 to 60% by weight of the at least one stabilizer.
Dependencies are inferred from the claim text.