Accession Number:

AD0759215

Title:

Development of a 900 F Titanium Alloy.

Descriptive Note:

Final rept. May 71-Sep 72,

Corporate Author:

RMI CO NILES OHIO RESEARCH AND DEVELOPMENT DEPT

Report Date:

1973-04-01

Pagination or Media Count:

128.0

Abstract:

The goal was to achieve an improved combination of elevated temperature properties, particularly high elevated temperature tensile strength. The alloy Ti-5Al-5Sn-2Zr-4Mo-0.25Si comes close to meeting the objectives of the contract. This alloy has the capability of achieving 120 ksi 900 F yield strength and high creep strength. At a creep exposure of 1000 F and 55 ksi for 96 hours the alloy has a permanent deformation of -0.23 percent. It also shows good stability as determined by post-creep ductility. Additional thermo-mechanical treatments show promise for improving the high-temperature properties further. Various alloying elements were studied in the investigation. Author Modified Abstract

Subject Categories:

  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE