Accession Number:

ADA231720

Title:

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

Descriptive Note:

Quarterly rept. no. 18, 10 Nov-9 Feb 1990

Corporate Author:

MARTIN MARIETTA ASTRONAUTICS GROUP DENVER CO

Personal Author(s):

Report Date:

1990-02-09

Pagination or Media Count:

8.0

Abstract:

Intermetallic compounds offer very high 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. Transmission electron microscopy of the sputtered foils was initiated during the previous period. Analysis of an as-deposited foil containing approximately 93 Be showed that the grain size of the material was approximately 200-300 nm, the interior of grains contained a high defect concentration, and the structure was TiBe12, as indicated by selected area diffraction. Heat treatment studies were also initiated to determine the optimum annealing conditions for the foils.

Subject Categories:

  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE