Ut-battelle, Inc.

Eck Industries, Inc.

Iowa State University Research Foundation Inc

The University of Tennessee Research Foundation

Lawrence Livermore National Security, LLC

Trustees of the Colorado School of Mines

Michael S Kesler

Orlando Rios

David J Weiss

Zachary C Sims

Hunter B Henderson

Ryan T Ott

Scott McCall

Kevin M Anderson

Gerard Michael Ludtka

Roger Allen Kisner

William Carter

Bruce A Moyer

Amelia M Elliott

Ryan Dehoff

Craig A Bridges

Edgar Lara-Curzio

Amit Shyam

Corby G Anderson

Scott K Mccall

Boyd Mccutchen Evans

Michael Alan McGuire

Ying Yang

Alex J Plotkowski

Ralph William McCallum

Peeyush Nandwana

Kevin D Sisco

Aurelien Perron

Cajetan Ikenna Niebedim

Benjamin S Conner

Hao Cui

Patrice E A Turchi

Sumit Bahl

Emily E Moore

Eric Thomas Stromme

Fanqiang Meng

Lawrence Allard, Jr

Tom Byvank

Disclosed herein are embodiments of aluminum-based alloys having improved intergranular corrosion resistance. Methods of making and using the disclosed alloy embodiments also are disclosed herein.

Aluminum alloys with improved intergranular corrosion resistance properties and methods of making and using the same

An alloy includes aluminum, a rare earth element, and an alloying element selected from the following: Si, Cu, Mg, Fe, Ti, Zn, Zr, Mn, Ni, Sr, B, Ca, and a combination thereof. The aluminum (Al), the rare earth element (RE), and the alloying element are characterized by forming at least one form of an intermetallic compound. An amount of the rare earth element in the alloy is in a range of about 1 wt. % to about 12 wt. %, and an amount of the alloying element in the alloy is greater than an amount of the alloying element present in the intermetallic compound.

Rare Earth Element&#x2014;Aluminum Alloys

A solid aluminum-fiber composite comprising: (i) an aluminum-containing matrix comprising elemental aluminum; (ii) coated or uncoated fibers embedded within said aluminum-containing matrix, wherein said fibers have a different composition than said aluminum-containing matrix and impart additional strength to said aluminum-containing matrix as compared to said aluminum-containing matrix in the absence of said fibers embedded therein; and (iii) an intermetallic layer present as an interface between each of said fibers and the aluminum-containing matrix, wherein said intermetallic layer has a composition different from said aluminum-containing matrix and said fibers, and said intermetallic layer contains at least one element that is also present in the aluminum-containing matrix and at least one element present in the fibers, whether from the coated or interior portion of the fibers. Methods of producing the above-described composite are also described.

Aluminum-fiber composites containing intermetallic phase at the matrix-fiber interface

Disclosed herein are embodiments of an Al&#x2014;Ce&#x2014;Mn alloy for use in additive manufacturing. The disclosed alloy embodiments provide fabricated objects, such as bulk components, comprising a heterogeneous microstructure and having good mechanical properties even when exposed to conditions used during the additive manufacturing process. Methods for making and using alloy embodiments also are disclosed herein.

Aluminum-cerium-manganese alloy embodiments for metal additive manufacturing

A reactive matrix infiltration process is described herein, which includes contacting a surface of a preform comprising reinforcement material particles with a molten infiltrant comprising a matrix material, the matrix material comprising an Al&#x2014;Ce alloy, whereby the infiltrant at least partially fills spaces between the reinforcement material particles by capillary action and reacts with the reinforcement material particles to form a composite material form, the composite material comprising the matrix material, at least one intermetallic phase, and, optionally, reinforcement material particles. A composite material form also is described, which includes a plurality of reinforcement material particles comprising a metal alloy or a ceramic, a matrix material at least partially filling spaces between the reinforcement material particles; and at least one intermetallic phase surrounding at least some of the reinforcement material particles. The reinforcement material particles and intermetallic phase together may form a gradient core-shell structure.

Reactive matrix infiltration of powder preforms

An alloy for structural direct-writing additive manufacturing comprising a base element selected from the group consisting of aluminum (Al), nickel (Ni) and a combination thereof, and a rare earth element selected from the group consisting of cerium (Ce), lanthanide (La) and a combination thereof, and a eutectic intermetallic present in said alloy in an amount ranging from about 0.5 wt. % to 7.5 wt. %. The invention is also directed to a method of structural direct-write additive manufacturing using the above-described alloy, as well as 3D objects produced by the method. The invention is also directed to methods of producing the above-described alloy.

Structural direct-write additive manufacturing of molten metals

The disclosure concerns methods for making a composition comprising a light metal and an intermetallic comprising the light metal and a light rare earth element. The composition also may include a plurality of nanoparticles comprising an oxide of the light metal. The method includes directly reducing a light rare earth element precursor compound in a melt of the light metal, thereby forming the light rare earth element and nanoparticles of the light metal oxide.

Production of castable light rare earth rich light metal compositions from direct reduction processes

An example apparatus can comprise an emitter to emit radio frequency radiation, an absorber that changes temperature based on emissions from the emitter, and one or more sensors to measure a temperature difference between a sample and a reference coupled to the absorber.

High command fidelity electromagnetically driven calorimeter

Growing community of inventors

Oak Ridge, TN, United States of America

Michael S Kesler