Accession Number : AD0620526

Title :   PILOT PRODUCTION AND EVALUATION OF TANTALUM ALLOY SHEET.

Descriptive Note : Quarterly rept. no. 11, 15 Mar-15 Jun 65,

Corporate Author : WESTINGHOUSE ELECTRIC CORP PITTSBURGH PA ASTRONUCLEAR LAB

Personal Author(s) : Ammon,R. L. ; Filippi,A. M. ; Goodspeed,R. C.

Report Date : 25 AUG 1965

Pagination or Media Count : 22

Abstract : Eighteen and twenty-four inch wide T-222 sheet has been obtained by rolling slabs produced by direct forging 4-inch diameter ingots. One sheet has been sampled for detailed chemical analysis and mechanical property studies. Although the investigations are not yet complete, initial recrystallization results show a behavior analogous to that described for T-222 sheet produced for smaller ingots. Size and shape of second phases occurring in solution treated and aged T-222 samples were studied by means of electron microscopy. The dimetal carbide occurring upon aging at 2000 F principally grows as a platelet several thousand angstroms in thickness. The monocarbide developed upon aging at 2800 F appears as a very fine dispersoid submicron in size. (Author)

Descriptors :   (*TANTALUM ALLOYS, ROLLING(METALLURGY)), (*ROLLING(METALLURGY), TANTALUM ALLOYS), SHEETS, HAFNIUM ALLOYS, TUNGSTEN ALLOYS, CARBON ALLOYS, FORGING, SURFACE PROPERTIES, PHASE STUDIES, HEAT TREATMENT, MICROSTRUCTURE, HARDNESS, AGING(MATERIALS)

Distribution Statement : APPROVED FOR PUBLIC RELEASE