
Accession Number : AD0607721
Title : RELATIONSHIP OF COMPOSITION TO LATTICE SPACINGS OF SINGLE PHASE ALLOYS.
Descriptive Note : Rept. for Aug 61Aug 62,
Corporate Author : AIR FORCE MATERIALS LAB WRIGHTPATTERSON AFB OHIO
Personal Author(s) : Hartley,Craig S.
Report Date : SEP 1964
Pagination or Media Count : 14
Abstract : The relationship of average interatomic distances to composition in singlephase alloys is discussed in terms of a simplified equation. Sample calculations on existing data show that, within the precision of most composition and lattice parameter data, the probability of an ij pair can be considered to be those of a random arrangement of atoms and the spacing of an ij pair for alloys of n components can be considered constant over a single phase field. Although this oversimplified picture is at variance with the physical situation as inferred from diffuse xray scattering measurements of shortrange order and from thermodynamic data, it is felt that an equation of the form presented represents a more generally useful and precise relationship between lattice parameters and compositions of alloys than the generally used linear form of Vegard's Law.
Descriptors : (*ALLOYS, CRYSTAL LATTICES), (*CRYSTAL LATTICES, ALLOYS), MATHEMATICAL ANALYSIS, PHASE STUDIES
Distribution Statement : APPROVED FOR PUBLIC RELEASE