Investigation of creep cavity coalescence in brass by in-situ synchrotron x-ray microtomography

Augusta Isaac; Krzysztof Dzieciol; Federico Sket; Marco di Michiel; Thomas Buslaps; András Borbély; Anke R. Pyzalla

doi:10.1117/12.795941

18 September 2008 Investigation of creep cavity coalescence in brass by in-situ synchrotron x-ray microtomography

Augusta Isaac, Krzysztof Dzieciol, Federico Sket, Marco di Michiel, Thomas Buslaps, András Borbély, Anke R. Pyzalla

Proceedings Volume 7078, Developments in X-Ray Tomography VI; 70781J (2008) https://doi.org/10.1117/12.795941
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

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.

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Augusta Isaac, Krzysztof Dzieciol, Federico Sket, Marco di Michiel, Thomas Buslaps, András Borbély, and Anke R. Pyzalla "Investigation of creep cavity coalescence in brass by in-situ synchrotron x-ray microtomography", Proc. SPIE 7078, Developments in X-Ray Tomography VI, 70781J (18 September 2008); https://doi.org/10.1117/12.795941

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