Energy calibration and full-pattern refinement for strain analysis using energy-dispersive and monochromatic X-ray diffraction

J. Liu, K. Kim, M. Golshan, D. Laundy, A. M. Korsunsky

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

Precise channel-to-energy conversion is very important in full-pattern refinement in energy-dispersive X-ray diffraction. Careful examination shows that the channel-to-energy conversion is not entirely linear, which presents an obstacle to obtaining accurate quantitative data for lattice strains by pattern refinement. In order to establish an accurate quadratic channel-to-energy conversion function, a Matlab program was written to find the best quadratic coefficient and hence the whole energy conversion function. Then this energy conversion function was used to perform a whole-pattern fitting of the energy-dispersive X-ray diffraction pattern of a Ti64 sample. The strain across the Ti64 bar calculated from the fitting results has been compared with values obtained by single-wavelength X-ray diffraction utilizing a Laue monochromator.

Original languageEnglish
Pages (from-to)661-667
Number of pages7
JournalJournal of Applied Crystallography
Volume38
Issue number4
DOIs
Publication statusPublished - Aug 2005
Externally publishedYes

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