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A new source of X-ray line broadening: inhomogeneous strains induced by uniform homogeneous temperature conditions in polyphase or non-cubic materials

Publication ,  Journal Article
Cocks, FH; Cogan, SF
Published in: Journal of Materials Science
January 1, 1976

Thermal strains may contribute to X-ray diffraction line broadening in both single-phase non-cubic and in polyphase cubic polycrystalline materials even under uniform temperature conditions. A method is developed for calculating the magnitude of these thermally induced strains directly from the measured diffraction peak profiles. Corrections for particle-size effects can be made readily if particle-size broadening is significant, and the thermal diffuse scattering (TDS) contribution to the diffracted intensity can be taken into account experimentally. By this method, the strains in a Mg-5 wt% Si alloy were found to be increased by as much as 35% by a 190° C temperature change. Even in the case of this relatively low melting point alloy, the TDS effect causes only a maximum of 15% error in these measured strain effects. The interpretation of these isothermally induced strains in terms of crystal anisotropy, grain morphology and orientation and the relative sizes of phases and grains is discussed. © 1976, Chapman and Hall Ltd. All rights reserved.

Duke Scholars

Published In

Journal of Materials Science

DOI

EISSN

1573-4803

ISSN

0022-2461

Publication Date

January 1, 1976

Volume

11

Issue

11

Start / End Page

2061 / 2067

Related Subject Headings

  • Materials
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 03 Chemical Sciences
 

Citation

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Cocks, F. H., & Cogan, S. F. (1976). A new source of X-ray line broadening: inhomogeneous strains induced by uniform homogeneous temperature conditions in polyphase or non-cubic materials. Journal of Materials Science, 11(11), 2061–2067. https://doi.org/10.1007/PL00020333
Cocks, F. H., and S. F. Cogan. “A new source of X-ray line broadening: inhomogeneous strains induced by uniform homogeneous temperature conditions in polyphase or non-cubic materials.” Journal of Materials Science 11, no. 11 (January 1, 1976): 2061–67. https://doi.org/10.1007/PL00020333.
Cocks, F. H., and S. F. Cogan. “A new source of X-ray line broadening: inhomogeneous strains induced by uniform homogeneous temperature conditions in polyphase or non-cubic materials.” Journal of Materials Science, vol. 11, no. 11, Jan. 1976, pp. 2061–67. Scopus, doi:10.1007/PL00020333.
Journal cover image

Published In

Journal of Materials Science

DOI

EISSN

1573-4803

ISSN

0022-2461

Publication Date

January 1, 1976

Volume

11

Issue

11

Start / End Page

2061 / 2067

Related Subject Headings

  • Materials
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 03 Chemical Sciences