Accession Number : AD0271580

Title :   RESEARCH AND DEVELOPMENT ON HIGH-PRESSURE-HIGH-TEMPERATURE METALLURGY

Corporate Author : MANLABS INC CAMBRIDGE MASS

Personal Author(s) : KAUFMAN,L. ; RADCLIFFE,S.V.

Report Date : AUG 1961

Pagination or Media Count : 1

Abstract : The experimental investigations on the effect of high hydrostatic pressure on phase transformations in various substitutional Fe base alloys, including Fe-Cr, Fe-Ni and Fe-Sc, yield data which are in close agreement with theoretical prediction. A study of the effects of pressure on Fe-C alloys shows a general shift of the equilibrium phase boundaries to lower C contents and temperatures with pressure. Pressure also acts to retard both the rate of tempering and the isothermal transformation of metastable austenite. The synthesis of fcc MoC was carried out at pressures in excess of 35 kilobars at a temperature of 2000 C. The thermally activated recovery and recrystallization processes were retarded in a study of Cu and 70-30 brass. (Author)

Descriptors :   *CARBIDES, *CARBON ALLOYS, *IRON ALLOYS, *MOLYBDENUM COMPOUNDS, ALLOYS, ALUMINUM COMPOUNDS, AUSTENITE, BRASS, BRITTLENESS, CERIUM, CHROMIUM ALLOYS, COPPER, HALL EFFECT, HIGH PRESSURE, HIGH TEMPERATURE, HYDROSTATIC PRESSURE, MEASUREMENT, METALLURGY, METALS, MICROSTRUCTURE, NICKEL ALLOYS, OXIDES, PHASE STUDIES, REACTION KINETICS, RELAXATION TIME, SILICON ALLOYS, SINTERING, STRESSES, SYNTHESIS, TEST EQUIPMENT, X RAY DIFFRACTION

Distribution Statement : APPROVED FOR PUBLIC RELEASE