Accession Number : AD0761814

Title :   Computer Analysis of Alloy Systems.

Descriptive Note : Final technical rept. May 71-Jan 73,

Corporate Author : MANLABS INC CAMBRIDGE MASS

Personal Author(s) : Kaufman,Larry ; Nesor,Harvey

Report Date : MAR 1973

Pagination or Media Count : 145

Abstract : Computer analysis of twenty-three binary and thirteen ternary titanium and columbium base systems were performed in order to provide phase stability and thermochemical characterization data which can be used to define fabrication procedures for achieving high temperature stability and improved mechanical properties. M sub s temperatures were calculated for titanium base alloys with simultaneous additions of Mo, V, Al, Mn and Sn. The effect of zirconium on the solubility of Si and Be in hcp titanium was calculated along with the occurrence of miscibility gap formation in bcc titanium base systems. Titanium and columbium base ternary systems were analyzed to predict the temperature-composition trajectories of eutectoid and eutectic troughs and the location of melting point minima. A method was developed for calculation of the eutectic temperature and composition of metal alloy-metal carbide systems and applied to the (Fe,Ni,Cr)-TiC case. (Author)

Descriptors :   (*TITANIUM ALLOYS, PHASE STUDIES), (*NIOBIUM ALLOYS, PHASE STUDIES), STABILITY, TRANSITION TEMPERATURE, MOLYBDENUM ALLOYS, VANADIUM ALLOYS, ALUMINUM ALLOYS, MANGANESE ALLOYS, TIN ALLOYS, EUTECTICS, MELTING POINT, SOLUBILITY, PHASE DIAGRAMS, SPECIFIC HEAT

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE