Inco Alloys International, Inc.

Inco Selective Surfaces, Inc.

Arun D Jatkar

Paul S Gilman

Stephen J Donachie

Walter E Mattson

Robert D Schelleng

Alfred J Varall, Jr

Raymond C Benn

Winfred L Woodard, Iii

Winfred L Woodward, Iii

A method for forming intermetallic and intermetallic-type precursor alloys for subsequent mechanical alloying applications. Elemental powders are blended in proportions approximately equal to their respective intermetallic compounds. Heating of the blend results in the formation of intermetallic compounds whereas lack of heating results in intermetallic-type powder without the intermetallic structure. The resultant powder is then blended to form a final alloy. Examples involving aluminum-titanium alloys are discussed.

Formation of intermetallic and intermetallic-type precursor alloys for

Aluminum-base alloys and a method of preparing aluminum-base alloys by mechanical alloying in the presence of a carbidiferous processing aid wherein a strong carbide former such as titanium is included so as to produce carbides in the final alloy more thermally stable at temperatures in excess of 100.degree. C. than Al.sub.4 C.sub.3.

Mechanical alloying

A process for producing composite materials which comprises subjecting particles of a malleable matrix material, i.e., a metal or alloy or the components of a matrix alloy and particles of a reinforcing material such as a carbide or an oxide or an intermetallic to energetic mechanical milling under circumstances to insure the pulverulent nature of the mill charge so as to enfold matrix material around each of said reinforcing particles to provide a bond between the matrix material and the surface of the reinforcing particle. The process is exemplified by the use of aluminum alloy as the matrix material and silicon carbide as the reinforcing particles. Reinforcing particles are present in an amount of about 0.2 to about 30 volume percent of total matrix and reinforcing particles. The invention is also directed to the product of the process.

Process for producing composite material

Process for producing composite material by milling the metal to 50%

Growing community of inventors

Monroe, NY, United States of America

Arun D Jatkar