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US 11,440,133 B2Granted
Low-cost friction stir processing tool
AssigneeMazak Corporation
InventorsQingyuan Liu, Russell J. Steel, Rodney Dale Fleck
Life of this patent
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Abstract
A friction stir processing (FSP) tool includes a working material. The working material has a matrix phase and a particulate phase. The matrix phase includes tungsten and an alloy material. The particulate phase is located within the matrix phase, and the particulate phase has an indentation hardness less than 45 GPa.
Claims8
A method of manufacturing a FSP tool, the method comprising:
- mixing a particulate precursor with a tungsten precursor and an alloy precursor to form a mixture, the particulate precursor including particles having an indentation hardness less than 45 GPa;
- sintering the mixture at a sintering temperature greater than 1000° C. while compressing the mixture with a pressure greater than 2.0 GPa;
- alloying the tungsten precursor and alloy precursor to form a matrix phase including a tungsten alloy;
- and
- embedding the particulate precursor as a particulate phase in the matrix phase.
2 more elements
Dependencies are inferred from the claim text.