Accession Number:

AD0810550

Title:

INTERMITTENT CREEP AND STABILITY OF MATERIALS FOR SST APPLICATIONS

Descriptive Note:

Summary technical rept. 1 Jul 1963-31 Dec 1966

Corporate Author:

GENERAL DYNAMICS CORP FORT WORTH TX

Report Date:

1967-01-01

Pagination or Media Count:

230.0

Abstract:

The creep rate and metallurgical stability were investigated of candidate materials for a supersonic transport airplane when exposed to heat alone and to creep loading at temperatures of 550 or 650 deg F. Specimens were exposed to intermittent heating and to creep loading for times of 1000, 5000, 10,000 and 30,000 hours and, also, to steady heating and to creep loading for 30,000 hours. The materials tested were Ti-8Al-1Mo-1V duplex annealed and Ti-6Al-4V mill annealed titanium alloys, Rene 41 20 cold rolled 16 hours at 1400 deg F superalloy, and AM-350 SCT 825 and PH 14-8 Mo SRH 1050 stainless steels. The 30,000 hour creep stress level for the two titaniums and Rene 41 was 40,000 psi, whereas, 67,000 psi was used for the 30,000 hour creep stress level of the two stainless steels.

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE