Accession Number : AD0696953

Title :   SOLUTION KINETICS OF CuAl2 IN AN Al-4Cu ALLOY.

Descriptive Note : Technical rept.,

Corporate Author : DREXEL INST OF TECH PHILADELPHIA PA DEPT OF METALLURGICAL ENGINEERING

Personal Author(s) : Baty,David L. ; Tanzilli,Richard A. ; Heckel,Richard W.

Report Date : OCT 1969

Pagination or Media Count : 28

Abstract : The results of a recently-developed, spherical, finite geometry, mathematical model using numerical methods are compared to existing closed-form models. The geometry and boundary conditions imposed by the closed-form models are shown to be restrictive in the application of these models to the solution kinetics of second phases. A quantitative metallography study of the solution kinetics of CuAl2 in an Al-4w/o Cu alloy was undertaken to provide data on the changes in second-phase particle size distributions as a function of solution treatment time. The size distributions were shown to vary according to the proposed spherical, finite model formulated using numerical methods. (Author)

Descriptors :   (*CRYSTAL GROWTH, *PHASE STUDIES), (*PARTICLE SIZE, PHASE STUDIES), (*COPPER ALLOYS, PHASE STUDIES), (*ALUMINUM ALLOYS, PHASE STUDIES), SOLUTIONS(MIXTURES), INTERMETALLIC COMPOUNDS

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE