In Situ Neutron Diffraction Characterization of Phases in Co-Re-Based Alloys at High Temperatures

• Authors: P. Strunz , D. Mukherji , R. Gilles , U. Gasser , P. Beran , G. Farkas , M. Hofmann , L. Karge , J. Rösler
• Languages of publication: EN

Abstracts

EN

Co-Re-based alloys strengthened by carbides are promising candidates for new high-temperature alloys for gas turbine applications. The high temperature microstructure and its stability are of utmost importance, e.g. due to strengthening-phase selection. Neutron scattering, providing in situ information at high temperatures, was extensively used in the past for the Co-Re alloys research. The paper focuses on TaC strengthened alloy, particularly on the stability TaC precipitates which were previously shown not to dissolve up to at least 1300°C. Small-angle neutron scattering shows that its finer morphological variant - most suitable for high temperature strengthening - coarsened even at relatively low temperature of 1000°C. This coarsening is faster at higher temperatures and the mean size exceeded 1000 Å (i.e. the size - detection limit of the used facility) after 4 h hold at 1200°C.

Keywords

EN

61.05.fg; 61.66.Dk

Discipline

• 61.05.fg: Neutron scattering (including small-angle scattering)
• 61.66.Dk: Alloys

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 128
• Issue: 4
• Pages: 684-688

Dates

published

2015-10

Contributors

author

P. Strunz

• Nuclear Physics Institute ASCR, Řež near Prague, CZ-25068, Czech Republic

author

D. Mukherji

• TU Braunschweig, Institut für Werkstoffe, Braunschweig, Germany

author

R. Gilles

• TU München, Forschungs Neutronenquelle Heinz Maier-Leibnitz, Garching, Germany

author

U. Gasser

• Laboratory for Neutron Scattering, PSI, Villigen, Switzerland

author

P. Beran

• Nuclear Physics Institute ASCR, Řež near Prague, CZ-25068, Czech Republic

author

G. Farkas

• Charles University in Prague, Department of Physics of Materials, Prague, Czech Republic

author

M. Hofmann

• TU München, Forschungs Neutronenquelle Heinz Maier-Leibnitz, Garching, Germany

author

L. Karge

• TU München, Forschungs Neutronenquelle Heinz Maier-Leibnitz, Garching, Germany

author

J. Rösler

• TU Braunschweig, Institut für Werkstoffe, Braunschweig, Germany

References

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Identifiers

DOI

10.12693/APhysPolA.128.684