Metal Foaming Studied In Situ by Energy Dispersive X-Ray Diffraction of Synchrotron Radiation, X-Ray Radioscopy, and Optical Expandometry (pages 141–148)
Catalina Jiménez, Francisco Garcia-Moreno, Beate Pfretzschner, Paul Hans Kamm, Tillmann Robert Neu, Manuela Klaus, Christoph Genzel, André Hilger, Ingo Manke and John Banhart
Article first published online: 19 SEP 2012 | DOI: 10.1002/adem.201200183
Three synchronized methods are combined for studying in situ the foaming of AlSi11 using as-received TiH2 or pre-oxidized TiH2−x as blowing agents. Phase transformations are followed by energy-dispersive X-ray diffraction of synchrotron radiation. The internal structure of the foam is monitored by X-ray radioscopy and a video camera records the foam expansion. The phase transformations of TiH2 and TiH2−x inside expanding foams are reported here for the first time.