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In situ study of sigma phase formation in Cr–Co–Ni ternary alloys at 800°C using the long duration experiment facility at Diamond Light Source

DOI: 10.1107/S1600577518009475 DOI Help

Authors: L. D. Connor (Diamond Light Source) , P. M. Mignanelli (University of Cambridge) , K. A. Christofidou (University of Cambridge) , N. G. Jones (University of Cambridge) , A. R. Baker (Diamond Light Source) , C. C. Tang (Diamond Light Source) , S. Guérin (Ilika technologies Ltd) , H. J. Stone (University of Cambridge)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Synchrotron Radiation , VOL 25

State: Published (Approved)
Published: September 2018
Diamond Proposal Number(s): 13173

Open Access Open Access

Abstract: The new long duration experiment facility on beamline I11 at Diamond Light Source has been used to study the kinetics of sigma phase formation in three Cr–Co–Ni alloys. Diffraction data acquired during in situ exposure at 800°C for 50 d showed progressive increases in the sigma fraction. This was accompanied by changes in the proportions of the other phases, which differed markedly between the alloys studied. These results demonstrate the capabilities of the long duration facility for the study of metallurgical phenomena over periods of months to years, a capability not previously available at a synchrotron source.

Journal Keywords: sigma; TCP (topologically close-packed phase); synchrotron; X-ray powder diffraction; SEM (scanning electron microscopy); ternary alloys; metallurgial phenomena

Subject Areas: Materials


Instruments: I11-High Resolution Powder Diffraction

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