Accession Number:

AD0865702

Title:

Thermodynamics of Titanium Alloys. II. The Titanium-Aluminum System.

Descriptive Note:

Technical rept. Jul 66-Jun 69,

Corporate Author:

CINCINNATI UNIV OH DEPT OF MATERIALS SCIENCE AND METALLURGICAL ENGINEERING

Personal Author(s):

• Usell, R. J.
• Hoch, M.

Report Date:

1969-12-01

Pagination or Media Count:

34.0

Abstract:

Activities of titanium and aluminum were measured at 1780K in the body-centered cubic beta phase of the titanium-aluminum system, from zero to forty atomic percent aluminum, using three Knudsen effusion-time-of-flight mass spectrometer techniques. In the first technique the alloy of interest is placed in an ordinary Knudsen cell and the Al27 and Ti48 peak intensities are monitored as a function of composition from zero to forty atomic percent aluminum. In the second technique, aluminum weight loss experiments are carried out to determine the activity of aluminum as a function of composition from fifteen to forty atomic percent aluminum. In the third technique, the triple Knudsen cell is used to measure the activity of titanium. Author

Descriptors:

• (*TITANIUM ALLOYS
• THERMODYNAMICS)
• ALUMINUM ALLOYS
• INTERACTIONS
• HIGH TEMPERATURE

Subject Categories:

• Metallurgy and Metallography
• Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE