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Proceedings Paper

Investigation of creep cavity coalescence in brass by in-situ synchrotron x-ray microtomography
Author(s): Augusta Isaac; Krzysztof Dzieciol; Federico Sket; Marco di Michiel; Thomas Buslaps; András Borbély; Anke R. Pyzalla
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Paper Abstract

X-ray microtomography was applied for in-situ study of void coalescence during high-temperature creep of a brass alloy. Using image correlation techniques the movement of single slices and cavities connected to these images were monitored during deformation. Coalescence of voids was detected using ancestors analysis and independently checked with a geometrical parameter describing the distorted cavity shape. The analysis of in situ results suggests the existence of a critical volume fraction, as well as critical value of the ligament size between cavities at the onset of coalescence. The maximum number of primary coalescence events takes place in the tertiary stage of creep.

Paper Details

Date Published: 18 September 2008
PDF: 10 pages
Proc. SPIE 7078, Developments in X-Ray Tomography VI, 70781J (18 September 2008); doi: 10.1117/12.795941
Show Author Affiliations
Augusta Isaac, Max-Planck-Institut für Eisenforschung GmbH (Germany)
Krzysztof Dzieciol, Max-Planck-Institut für Eisenforschung GmbH (Germany)
Federico Sket, Max-Planck-Institut für Eisenforschung GmbH (Germany)
Marco di Michiel, European Synchrotron Radiation Facility (France)
Thomas Buslaps, European Synchrotron Radiation Facility (France)
András Borbély, Max-Planck-Institut für Eisenforschung GmbH (Germany)
Anke R. Pyzalla, Max-Planck-Institut für Eisenforschung GmbH (Germany)

Published in SPIE Proceedings Vol. 7078:
Developments in X-Ray Tomography VI
Stuart R. Stock, Editor(s)

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