Fabrication of Intermetallic Compounds by Solid State Reaction of Roll-Bonded Materials.

摘要

Intermetallic compounds offer very specific material properties and property retention at elevated temperatures. However, reliable processing techniques to fabricate these materials have not been developed. This program will investigate the use of a novel, low cost fabrication technique involving a deformation-solid state reaction bonding process to form titanium beryllides. The interaction between Ti and Be was characterized with co-extruded material that was placed into Ta-lined steel cans and reacted under pressure. The Ti/Be molar ratio for this study was 1:2. The starting material was Be fibers that were wrapped with Ti foil. The first extrusion reduced the size of the Be wires from 2.5 mm to 1.1 mm. Testing was conducted on this material to obtain data on the reaction rate, sequence, and rate between Ti and Be. The rate of the reaction was analyzed at only one temperature and one pressure, i.e., 1000 C and 20,000 psi. (jes).