Accession Number:

AD0432420

Title:

DISPERSION STRENGTHENED NICKEL-BASE ALLOYS.

Descriptive Note:

Final rept., 1 Mar-31 Dec 63,

Corporate Author:

NEW ENGLAND MATERIALS LAB INC MEDFORD MASS

Personal Author(s):

Report Date:

1964-02-24

Pagination or Media Count:

24.0

Abstract:

The dispersion strengthening of 80 Nickel-20 Chromium and Udimet 500 Modified compositions was investigated with thorium oxide introduced by mechanical mixing or thermal decomposition techniques. Thermal decomposition of thorium nitrate onto 80 Nickel-20 Chromium powder produced a better degree of thorium oxide dispersion than mechanical mixing. The 100 hour rupture life stress of 80 Nickel-20 Chromium at 1800 F was increased from 1600 to 3400 psi with the addition of 5 vol.- thorium oxide. In addition, the effect of further cold deformation after extrusion on properties was investigated with 2.5 and 5 vol.- thorium oxide dispersions in 80 Nickel-20 Chromium. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE