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Lattice Spacings in Some Transition Metal Terminal Solid Solutions

Published online by Cambridge University Press:  06 March 2019

Henry Chessin
Affiliation:
United States Steel Corporation Monroevitle, Pennsylvania
Sigurds Arajs
Affiliation:
United States Steel Corporation Monroevitle, Pennsylvania
D. S. Miller
Affiliation:
United States Steel Corporation Monroevitle, Pennsylvania
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Abstract

The lattice parameter-composition curves for several nickel solid solutions and for some chromium and. iron solid solutions are discussed. It is shown that the size effect may be the predominating influence on the change of lattice parameters in these systems. This is demonstrated by comparing observed and calculated data employing various methods. A new scheme for evaluating the atomic size in solid solutions is proposed, based on regarding the atom, as an incompressible core surrounded by a smeared-out compressible volume. The suggestion that classical elasticity theory may be used as a basis for understanding the size effect in solid solutions is justified by examination of the Ag-Pd system for additions of Ag from 0 to 100 at. %.

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Type
Research Article
Copyright
Copyright © International Centre for Diffraction Data 1962

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