Accession Number:

AD0609815

Title:

STUDIES OF REFRACTORY ALLOY SHEET MATERIALS.

Descriptive Note:

Final rept. for 15 Mar 63-15 Dec 64,

Corporate Author:

CLIMAX MOLYBDENUM CO OF MICHIGAN DETROIT

Personal Author(s):

Report Date:

1964-12-31

Pagination or Media Count:

90.0

Abstract:

Pilot lots of 0.05-in.-thick sheet were rolled from ingots of the following compositions 1 Mo 1.59 Cb 0.52 Ti 0.21 Zr 0.068 C, 2 Mo 1.30 Ti 0.35 Zr 0.093 C, 3 W 3.10 Mo 0.04 Zr 0.001 C. The use of solution or solution and aging thermal treatments at the extruded billet stage prior to rolling to sheet markedly increased the recrystallization temperature and the elevated-temperature tensile and creep-rupture strengths of the two molybdenum-base alloys. Tensile strengths of 55,000 psi at 3000 F and 13,600 psi at 3500 F were observed for the tungsten-base alloy. The W-Mo-Zr alloy sheet exhibited higher strengthdensity ratios at 3000 F than any of the molybdenum-base alloys evaluated. Creep-rupture strengths of both molybdenum- and tungsten-base alloy sheet materials were affected by reactions between the specimen surfaces and the test atmosphere .0004 torr. The molybdenum-base alloys experienced measurable decarburization during tests at 2400 and 3000 F.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE