Al—Ce alloy based composites
AssigneesIowa State University Research Foundation, Inc., Lawrence Livermore National Security, LLC, UT-Battelle, LLC, Eck Industries, Inc.
InventorsRyan T. Ott, Fanqiang Meng, Scott K. McCall, Hunter B. Henderson, Orlando Rios, Zachary C. Sims, David Weiss
Life of this patent
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Abstract
MMC's comprising an Al-RB alloy-based matrix and ceramic, metal and/or intermetallic reinforcement particulates dispersed in the alloy matrix provide improved strength and ductility wherein the reinforcement particulates have a higher melting temperature than the matrix alloy.
Claims12
A metal matrix composite comprising an alloy matrix that comprises consolidated alloy powder having a composition comprising Al, RE, and Mg and containing reinforcement particulates in the form of reinforcement powder particles dispersed in the alloy matrix wherein the reinforcement particulates have a higher melting temperature than the alloy matrix;
- wherein a metallic interfacial reaction layer is present between the alloy matrix and individual reinforcement particulates and includes constituent elements of the alloy matrix and of the reinforcement particulates, wherein presence of the interfacial reaction layer facilitates load partitioning between the relatively soft alloy matrix and relatively hard reinforcement particulates;
- wherein the metal matrix composite exhibits tensile strength greater than that of the alloy matrix devoid of the reinforcement particulates;
- and wherein the reinforcement particulates comprise powder particles of at least one of Al2O3, Ni3Al, ZrO2, SiC, B4C, CeO2, and/or La2 O3.
A metal matrix composite comprising a Al-RE alloy matrix that comprises consolidated alloy powder having a composition comprising Al and RE and containing reinforcement particulates consisting of reinforcement powder particles in the alloy matrix wherein the reinforcement powder particles have a higher melting temperature than the alloy matrix;
- wherein a metallic interfacial reaction layer is present between the alloy matrix and the reinforcement particulates and includes constituent elements of the alloy matrix and of the reinforcement particulates wherein presence of the interfacial reaction layer facilitates load partitioning between the relatively soft alloy matrix and relatively hard reinforcement particulates;
- wherein the metal matrix composite exhibits tensile strength for load bearing greater than that of the alloy matrix devoid of the reinforcement powder particles, wherein the reinforcement powder particles are selected from Al2O3, Ni3Al, ZrO2, SiC, B4C, CeO2, or La2O3, and wherein the consolidated alloy powder forming the matrix comprises at least one additional alloying element selected from Mg, Cu and/or Mn.
Dependencies are inferred from the claim text.