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US 8,230,899 B2Granted
Systems and methods for forming and processing alloy ingots
AssigneeATI Properties, Inc.
InventorRamesh S. Minisandram
Life of this patent
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Abstract
Processes and methods related to producing, processing, and hot working alloy ingots are disclosed. An alloy ingot is formed including an inner ingot core and an outer layer metallurgically bonded to the inner ingot core. The processes and methods are characterized by a reduction in the incidence of surface cracking of the alloy ingot during hot working.
Claims19
A process for forming an alloy ingot comprising:
- positioning an alloy liner in a crucible of a vacuum arc remelting apparatus;
- and
- vacuum arc remelting an alloy electrode into the alloy liner in the crucible, thereby forming an alloy ingot comprising an outer layer metallurgically bonded to an inner ingot core;
- and
- depositing and metallurgically bonding an end layer on to at least one end of the alloy ingot comprising the outer layer metallurgically bonded to the inner ingot core.
2 more elements
A process for forming an alloy ingot comprising:
- vacuum induction melting a nickel-base alloy to form an alloy electrode;
- electroslag refining the alloy electrode to form a refined alloy electrode;
- vacuum arc remelting the refined alloy electrode into an alloy liner positioned in a crucible of a vacuum arc remelting apparatus, thereby forming an alloy ingot comprising an outer layer metallurgically bonded to an inner ingot core;
- and
- weld depositing and metallurgically bonding end layers on to opposed ends of the alloy ingot comprising the outer layer metallurgically bonded to the inner ingot core;
- wherein the inner ingot core is enclosed within an outer circumferential layer and two end layers;
- and
- wherein the outer layer comprises a nickel-base alloy that this more ductile than the nickel-base alloy comprising the inner ingot core.
5 more elements
Dependencies are inferred from the claim text.