Mode of Boron Solubility in Ferrous Alloys

N. J. Calos; E. Graham; D. R. Cousens; P. Christodoulou; C. H. L. Kennard; L. K. Bekessy; S. F. Parker

doi:10.2320/matertrans.42.496

N. J. Calos, E. Graham, D. R. Cousens, P. Christodoulou, C. H. L. Kennard, L. K. Bekessy, S. F. Parker

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Keywords: boron, solubility, steel, inelastic neutron scattering, phonon dispersion, X-ray diffraction, neutron diffraction, rietveld analysis, dynamic mechanical analysis, internal friction

JOURNAL FREE ACCESS

2001 Volume 42 Issue 3 Pages 496-501

DOI https://doi.org/10.2320/matertrans.42.496

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Abstract

X-ray and neutron diffractometry and inelastic neutron scattering studies on a set of cast ferritic iron-chromium alloys containing boron indicate that the dissolved boron is present interstitially rather than substitutionally within the α-Fe,Cr matrix. Inelastic neutron scattering spectra of the alloys may be interpreted in terms of the phonon dispersion curves for α-Fe. These spectra show small shifts in the frequencies of particular phonons, indicative of lattice disruption by the presence of interstitial atoms. These results were subsequently confirmed by internal friction measurements.

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