Accession Number:

ADB029256

Title:

Research to Conduct an Exploratory Experimental and Analytical Investigation of Alloys

Descriptive Note:

Interim rept. Feb 1975-Jun 1977

Corporate Author:

PRATT AND WHITNEY WEST PALM BEACH FL GOVERNMENT PRODUCTS DIV

Report Date:

1978-03-01

Pagination or Media Count:

222.0

Abstract:

A new class of alloys based on intermetallic compounds in the titanium aluminum system has shown the potential for application in the temperature range of 1000-1500 F. This program was undertaken to investigate alloys of this type based on the compound Ti3Al alpha two. The program has been divided into three parts, Alloys Development, Alloy Characterization and Processing Methods. The objective of the Alloy Development program was to identify alloys which exhibited ductility at low and intermediate temperatures. A large number of alloys have been prepared and examined, and as a result of this screening program, alloys meeting the ductility requirements have been identified in the Ti-Al-Nb system. It has been found that the elevated temperature properties of these alloys are somewhat lower than anticipated and methods of eliminating this problem through the use of alloying additions such as silicon are described.

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE