Dresden 2011 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 16: Structural Materials

MM 16.5: Talk

Tuesday, March 15, 2011, 12:00–12:15, IFW D

Ultra fast in situ hard X-rays micro-tomography: Application to solidification and hot tearing of alloys or heat treatment of super conductors — •Mario Scheel¹, Marco Di Michiel¹, Luc Salvo², Pierre Lhuissier², Bastien Mireux², Michel Suéry², and Christian Scheuerlein³ — ¹European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble, France — ²Laboratoire SIMAP - Groupe GPM2, BP 46 Saint Martin d'hères, France — ³European Organization for Nuclear Research (CERN), TE-MSC, Geneva, Switzerland

Hard X-rays micro-tomography allows getting 3D images with spatial resolution in the micron range in a non-destructive manner. It has been applied now in a wide range of research fields (damage in materials, foams, solidification, etc.). Thanks to the high flux of synchrotron and ultra fast cameras the total time to acquire a scan was considerably reduced. The use of specific devices mounted (furnaces, tensile compression machine) allows performing in situ tomography on various materials. We performed 3D in situ solidification of aluminium-copper alloys at fast cooling rates (between 1 to 10°C/s) and we will show results on the early stage of solidification (morphology of solid phase, kinetics of growth). In addition the formation of porosity and the phase evolution during the reaction heat treatment of superconducting wires has been monitored.