Method for production of performance enhanced metallic materials
AssigneeThe Boeing Company
InventorAli Yousefiani
Life of this patent
Estimating the term…
Abstract
A method for production of a metallic material from a semifinished metallic billet, the semifinished metallic billet including a nanocrystalline microstructure and/or an ultrafine-grained microstructure, the method including the steps of (1) subjecting the semifinished metallic billet to a rotary incremental forming process to form an intermediate wrought metallic billet, and (2) subjecting the intermediate wrought metallic billet to a high rate forming process to form a metallic product.
Claims19
A method for production of metallic material from a semifinished metallic billet, said semifinished metallic billet comprising at least one of a nanocrystalline microstructure and an ultrafine-grained microstructure, said method comprising:
- subjecting said semifinished metallic billet to a rotary incremental forming process to form an intermediate wrought metallic billet;
- and
- subjecting said intermediate wrought metallic billet to a high rate forming process, said high rate forming process being defined by an average equivalent strain rate of at least about 10 s−1.
A method for production of a metallic material from a metallic material powder, said method comprising:
- subjecting said metallic material powder to a cryomilling process to form a cryomilled metallic material powder comprising at least one of a nanocrystalline microstructure and an ultrafine-grained microstructure;
- subjecting said cryomilled metallic material powder to a degassing process to form a degassed metallic material powder;
- subjecting said degassed metallic material powder to a consolidating process to form a semifinished metallic billet, said semifinished metallic billet comprising at least one of the nanocrystalline microstructure and the ultrafine-grained microstructure;
- subjecting said semifinished metallic billet to a rotary incremental forming process to form an intermediate wrought metallic billet;
- and
- subjecting said intermediate wrought metallic billet to a high rate forming process, said high rate forming process being defined by an average equivalent strain rate of at least about 0.1 s−1.
A method for production of an aluminum alloy from a semifinished aluminum alloy billet, said semifinished aluminum alloy billet comprising at least one of nanocrystalline microstructure and an ultrafine-grained microstructure, said method comprising:
- subjecting said semifinished aluminum alloy billet to a rotary swaging process to form an intermediate wrought aluminum alloy billet;
- and
- subjecting said intermediate wrought aluminum alloy billet to a high rate extrusion process, said high rate extrusion process being defined by an average equivalent strain rate of at least about 0.1 s−1.
Dependencies are inferred from the claim text.