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Updated: Feb 5, 2026

Achieving Efficient Fragment Screening at XChem Facility at Diamond Light Source
Published on: May 29, 2021
In situ study of sigma phase formation in Cr-Co-Ni ternary alloys at 800°C using the long duration experiment
L D Connor1, P M Mignanelli2, K A Christofidou2
1Diamond Light Source Limited, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK.
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.
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