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


Personal Author(s) : Thompson, Oscar N ; Jones, Richard L


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/810550.pdf


Report Date : Jan 1967


Pagination or Media Count : 230


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.


Descriptors :   *TITANIUM ALLOYS , *NICKEL ALLOYS , *STAINLESS STEEL , *CREEP , SUPERSONIC AIRCRAFT , ELECTRON MICROSCOPY , TABLES(DATA) , TOUGHNESS , BIBLIOGRAPHIES , HIGH TEMPERATURE , MICROSTRUCTURE , FRACTURE(MECHANICS)


Subject Categories : Properties of Metals and Alloys


Distribution Statement : APPROVED FOR PUBLIC RELEASE