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US 2008/0155839 A1Published application
Cutting tools made of an in situ composite of bulk-solidifying amorphous alloy
OwnerMark C. Andersoninventor
Life of this patent
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Abstract
A cutting tool comprising: a blade portion having a cutting edge and a body portion; wherein the blade portion is made at least in part of a composite material comprising an amorphous metal alloy forming a substantially continuous matrix, and a second ductile metal phase embedded in the matrix and formed in situ in the matrix by crystallization from a molten alloy.
Claims20
A cutting tool comprising:
- a blade portion having a cutting edge;
- and
- a body portion;
- wherein at least one of the blade portion or the body portion are formed at least in part of a composite material comprising:
- an amorphous metal alloy forming a substantially continuous matrix;
- and a second ductile metal phase embedded in the matrix and formed in situ in the matrix by crystallization from a molten alloy.
3 more elements
A cutting tool comprising:
- a blade portion having a cutting edge;
- and
- a body portion;
- wherein at least one of the blade portion or the body portion are formed at least in part of a composite material comprising:
- an amorphous metal alloy forming a substantially continuous matrix;
- a second ductile metal phase in the form of dendrites is embedded in the matrix and formed in situ in the matrix by crystallization from a molten alloy;
- and
- wherein the dendrites have lengths of about 15 to 150 micrometers, the dendrites comprise secondary arms having widths of about 4 to 6 micrometers, and the secondary arms are spaced apart about 6 to 8 micrometers.
5 more elements
A cutting tool comprising:
- a blade portion having a cutting edge;
- and
- a body portion;
- wherein at least one of the blade portion or the body portion are formed at least in part of a composite material comprising:
- an amorphous metal alloy forming a substantially continuous matrix;
- and a second ductile metal phase in the form of particles is embedded in the matrix and formed in situ in the matrix by crystallization from a molten alloy;
- and
- wherein the particles have a particle size in the range of from 0.1 to 15 micrometers, spacing between adjacent particles in the range of 0.1 to 20 micrometers, the particles are in the range of from about 5 to 50 volume percent of the composite, the particles are sufficiently spaced apart for inducing a uniform distribution of shear bands traversing both the amorphous phase and the second phase and having a width of each shear band in the range of from 100 to 500 nanometers.
5 more elements
Dependencies are inferred from the claim text.