Abstract: Powder metallurgy technology is used to form metallic composites with a uniform distribution of nano-meter size particles within the metallic grains. The uniform distribution of the nano-meter particles is achieved by attaching the nano-meter particles to micron sized particles with surface properties capable of attracting the smaller particles, then blending the decorated particles with micron size metal powder. The blended powder is then powder metallurgy processed into billets that are metal-worked to complete the incorporation and uniform distribution of the nano-meter particles into the metallic composite.

Abstract: A metal matrix composite with a uniformly distributed ceramic component is made by mixing nano size ceramic particles with a surfactant and/or dispersing agent in a polar liquid to produce a colloidal solution, blending the ceramic particles with micron or sub-micron size metallic particles, and then compacting the blended ceramic and metallic particles into a solid mass.

Abstract: Powder metallurgy technology is used to form metallic composites with a uniform distribution of nano-meter size particles within the metallic grains. The uniform distribution of the nano-meter particles is achieved by attaching the nano-meter particles to micron sized particles with surface properties capable of attracting the smaller particles, then blending the decorated particles with micron size metal powder. The blended powder is then powder metallurgy processed into billets that are metal-worked to complete the incorporation and uniform distribution of the nano-meter particles into the metallic composite.

Abstract: High strength aluminum alloys and methods for producing them. The alloys consist essentially of about 9.0 to 10.3 wt. % zinc, about 2.5 to 3.5 wt. % magnesium, about 1.5 to 3.0 wt. % copper and less than about 0.05 wt. % of any other alloying constituent. The balance consists of aluminum. These alloys are compatible with ceramic reinforcements used in metal matrix composites.

Abstract: A manufacturing method for producing metal matrix composite (MMC) sheets without intermediate process losses associated with extrusion and rolling edge cracks. The method results in theoretical sheet yield rates from the initial MMC billet of up to 100%, compared to 30 to 60% yield rates for prior-art manufacturing processes. The methods in this invention comprise the following processes: (a) preparing a MMC powder mixture; (b) preparing a frame and a billet consolidation tool; (c) loading and compacting the MMC mixture to form a framed MMC compact; (d) consolidation of the framed MMC compact to form a framed MMC billet; (e) preparing the framed billet to be a framed roll-preform; and (e) rolling the framed roll-preform to MMC sheet.

Abstract: A method for manufacturing and producing metal alloy billet products from particulate starting materials, particularly adapted for use with aluminum and aluminum alloy wrought products and their manufacture involving the use of powdered starting materials. The method includes the basic steps of preparing elemental, master alloy or prealloyed metal powders with or without a foreign reinforcement phase, compacting the prepared powder into pellets, introducing and compacting the pellets into a die, consolidating the compacted powder into a billet.

Abstract: A novel and unique nano aluminum-matrix-composite alloy that has higher strength between room temperature and 200 degrees C. than those of prior art aluminum alloys and prior art aluminum-matrix-composites. The composite alloy has improved fatigue resistance, wear resistance, a lower coefficient of thermal expansion and higher modules than prior art aluminum alloys.

Abstract: A simple method to produce Aluminum Metal Matrix Nanocomposite with 2 to 35 volume percent of nano Al2O3 reinforcement phase without adding nano Al2O3 particles in a direct step of the metal matrix. The initial necessary material is an aluminum powder with nanoscale surface oxide. The volume percent of Al2O3 is determined by the particle size distribution and the thickness of the Al2O3 layer. The Al2O3 surface layers or shells are broken up and are uniformly distributed throughout the nanocomposite after the powder consolidation into billet and the hot and/or cold metal working of the billet.

Abstract: A three-phase nanocomposite that comprises about 0.5 to 10 vol % nano-scale aluminum oxide particles and about 1 to 45% high modulus ceramic particles and an aluminum alloy matrix. The nano phase is to enhance nanocomposite strength and the modulus phase is to enhance the specific modulus of the resulting nanocomposite.

Abstract: A rigid disk substrate for a magnetic recording disk is formed of a ceramic-metal matrix composite. The ceramic-metal matrix composite has a composition ranging from approximately 1 to 40 weight % of ceramic material and 60 to 99 weight % of aluminum or aluminum alloy metal matrix. The ceramic material may be silicon carbide, aluminum oxide, boron carbide, magnesium oxide, silicon oxide, silicon nitride, zirconium oxide, beryllium oxide, titanium boride, titanium carbide, tungsten carbide, or combinations thereof.

Abstract: A rigid disk substrate for a magnetic recording disk is formed of a metal-clad ceramic-metal matrix composite sandwich structure. The ceramic-metal matrix composite has a composition ranging from approximately 1 to 40 weight % of ceramic and 60 to 99 weight % of metal matrix. The metal matrix material and the metal cladding material are aluminum or an aluminum alloy. The substrate has a thickness less than 1 mm.

Abstract: Metals constituting the matrix of carbon (graphite) filament reinforced composites are alloyed with titanium and boron to prevent or reduce the migration of the titanium-boron coating applied to the filaments prior to their impregnation with the metal matrix materials.