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US 12,241,139 B2Granted
Method for manufacturing an austenitic steel component and use of the component
AssigneeOutokumpu Oyj
InventorsThomas Fröhlich, Stefan Lindner
Life of this patent
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Abstract
A method for manufacturing a component with high work hardening rate made of a material having an austenitic microstructure. A cold work hardened material for a component is heat treated to create at least one softened area with high ductility and lower strength than the initial high strength material by heat treating a part of the component material required for the softened area. Also, a use of the component.
Claims15
A method for manufacturing a component comprising:
- providing a stainless steel material having an austenitic microstructure that has been cold work hardened in a first forming process and has a first ductility and a first strength;
- and
- heat treating a localized area of the stainless steel material to create a localized softened area having a second ductility and a second strength,
- wherein the second ductility is greater than the first ductility and the second strength is lower than the first strength, and
- the component comprises the localized softened area having the second ductility and the second strength and a remainder having the first ductility and the first strength,
- wherein the stainless steel material has a chromium content of 12-20 weight %, a manganese content of 15-20 weight %, and a nickel content of 4.0-9.5 weight %.
3 more elements
Dependencies are inferred from the claim text.