Martensitic alloy component and process of forming a martensitic alloy component
AssigneeGeneral Electric Company
InventorTheodore Francis Majka
Life of this patent
Estimating the term…
Abstract
A martensitic alloy component includes by weight, 0.25% to 0.31% carbon (C), 2.1% to 3.0% manganese (Mn), 0.22% to 0.28% silicon (Si), 2.0% to 2.2% chromium (Cr), 0.45% to 0.55% molybdenum (Mo), 0.08% to 0.12% vanadium (V), and the balance is iron (Fe) and incidental impurities. The manganese-chromium martensitic alloy component has a hardenability corresponding to an ideal diameter of about 15 inches to about 30 inches or more.
Claims20
A martensitic alloy component, comprising by weight:
- 0.25% to 0.31% C;
- 2.1% to 3.0% Mn;
- 0.22% to 0.28% Si;
- 2.0% to 2.2% Cr;
- 0.45% to 0.55% Mo;
- 0.08% to 0.12% V;
- and
- balance iron and incidental impurities;
- and
- wherein the component has a hardenability corresponding to an ideal diameter of about 15 inches to about 30 inches or more.
A turbomachine shaft comprising a martensitic alloy, the martensitic alloy including by weight:
- 0.25% to 0.31% C;
- 2.1% to 3.0% Mn;
- 0.22% to 0.28% Si;
- 2.0% to 2.2% Cr;
- 0.45% to 0.55% Mo;
- 0.08% to 0.12% V;
- balance iron and incidental impurities;
- and
- wherein the martensitic alloy has a hardenability corresponding to an ideal diameter of about 20 inches to about 30 inches or more.
A process of forming a martensitic alloy component, the process comprising:
- forging an alloy comprising by weight:
- 0.25% to 0.31% C;
- 2.1% to 3.0% Mn;
- 0.22% to 0.28% Si;
- 2.0% to 2.2% Cr;
- 0.45% to 0.55% Mo;
- 0.08% to 0.12% V;
- balance iron and incidental impurities;
- austenitizing the forged alloy;
- quenching the austenitized alloy;
- tempering the quenched alloy;
- and
- wherein the component has a hardenability corresponding to an ideal diameter of 20 inches to 30 inches or more.
Dependencies are inferred from the claim text.