Dispersion strengthening by nanophase addition
AssigneeGeneral Electric Company
InventorsThomas Martin Angeliu, Charles Gitahi Mukira
Life of this patent
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Abstract
A dispersion strengthening method for metallic melts that are used to form large articles. The method comprises adding nanophase particles into a molten metallic melt and dispersing the nanophase particles in the metallic melt. The nanophase particles comprising particles with diameters in the range of about 5 nanometers to about 100 nanometers. The step of dispersing the nanophase particles in the metallic melt spaces the particles from each other with an average interparticle spacing (IPS) in a range from about 10 nanometers to about 500 nanometers.
Claims25
A dispersion strengthening method for metals, the method comprising the steps of:
- adding mechanically alloyed nanophase particles into a metallic melt, the mechanically alloyed nanophase particles comprising particles with diameters in the range of about 5 nanometers to about 100 nanometers;
- and
- dispersing the mechanically alloyed nanophase particles in the metallic melt so the mechanically alloyed nanophase particles are spaced from each other to provide dispersion strengthening.
A dispersion strengthening method for metals, the method comprising:
- adding nanophase particles into a molten metallic melt, the nanophase particles comprising particles with diameters in the range of about 5 nanometers to about 100 nanometers;
- the step of adding nanophase particles comprises adding a master alloy that comprises the nanophase particles;
- and
- dispersing the nanophase particles in the metallic melt so nanophase particles are spaced from each other to provide dispersion strengthening.
A dispersion strengthening method for metals, the method comprising:
- adding nanophase particles into a molten metallic melt, the nanophase particles comprising particles with diameters in the range of about 5 nanometers to about 100 nanometers;
- the step of adding nanophase particles comprises adding mechanically alloyed particles;
- and
- dispersing the nanophase particles in the metallic melt so nanophase particles are spaced from each other to provide dispersion strengthening.
A dispersion strengthening method for metals, the method comprising the steps of:
- adding a master alloy into a molten metallic melt, the master alloy comprising nanophase particles having diameters in the range of about 5 nanometers to about 100 nanometers;
- and
- dispersing the master alloy in the metallic melt so the nanophase particles are spaced from each other to provide dispersion strengthening.
Dependencies are inferred from the claim text.