Accession Number : AD0287528

Title :   ULTRA-SHORT-TIME CREEP RUPTURE

Corporate Author : AMERICAN MACHINE AND FOUNDRY CO ALEXANDRIA VA ALEXANDRIA DIV

Personal Author(s) : KNIGHT,J.P. ; COSBY,W.A. ; LEAVENWORTH,H.W.

Report Date : AUG 1962

Pagination or Media Count : 1

Abstract : The design and fabrication of ultra-short-time creep test equipment and tilization of the equipment for determining the short time mechanical properties of a structural refractory metal sheet alloy at elevated temperatures was studied. Tensile test specimens of Ta-10%W alloy were strained at temperatures of 2000, 2500, 2750, and 3000 F in an argon atmosphere and in a vacuum (3000 F only). Heating of test specimens to maximum temperature was accomplished in approximately 60 msec. Tensile loading of test specimens at each temperature was acomplished prior to attining test temperature and 1/2, 2.0, and 5.0 sec after attaining test temperature. A desription of test apparatus, test procedures and complete test data are given. (Author)

Descriptors :   *CREEP, *REFRACTORY MATERIALS, *TANTALUM ALLOYS, *TEST EQUIPMENT, AERODYNAMIC HEATING, CIRCUITS, CONTROLLED ATMOSPHERES, DESIGN, FRACTURE (MECHANICS), HEAT RESISTANT METALS + ALLOYS, HIGH TEMPERATURE, LOADING, MECHANICAL PROPERTIES, REENTRY VEHICLES, RUPTURE, SHEETS, TENSILE PROPERTIES, THERMAL STRESSES, TUNGSTEN ALLOYS, VACUUM APPARATUS

Distribution Statement : APPROVED FOR PUBLIC RELEASE