Syntactic metal matrix materials and methods

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United States of America

PATENT NO 11969797
SERIAL NO

17513374

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Abstract

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A syntactic metal foam composite that is substantially fully dense except for syntactic porosity is formed from a mixture of ceramic microballoons and matrix forming metal. The ceramic microballoons have a uniaxial crush strength and a much higher omniaxial crush strength. The mixture is continuously constrained while it is consolidated. The constraining force is less than the omniaxial crush strength. The substantially fully dense syntactic metal foam composite is then constrained and deformation worked at a substantially constant volume. The deformation working is typically performed at a yield strength that is adjusted by way of selecting a working temperature at which the yield strength is approximately less than the omniaxial crush strength of the included ceramic microballoons. This deformation causes at least work hardening and grain refinement in the matrix metal.

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Patent Owner(s)

Patent OwnerAddress
POWDERMET INC24112 ROCKWELL DRIVE EUCLID OH 44117

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Doud, Brian Euclid, US 43 497
Sherman, Andrew Mentor, US 91 1129

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