title: Inhomogeneous plastic flow investigated by X-ray absorption microtomography of an aluminium alloy containing marker particles.
abstract: By combining a synchrotron X-ray source and the microtomography technique, the displacement gradient tensor components can be measured directly throughout the volume of a metal sample containing highly absorbing marker particles to detect material flow. The present article describes application of these techniques to compression of a rectangular Al-W specimen with a central hole. The results show that the externally imposed axial displacement gradient is accommodated mainly in two 45 degrees shear bands passing through the hole. A simple deformation analysis provides insight into shear band formation.
authors.affiliation: Center for Fundamental Research, Risø National Laboratory, 4000 Roskilde, Denmark. kristoffer.haldrup@risoe.dk
authors.forename: K
authors.initials: K
authors.lastname: Haldrup
authors.forename: S F
authors.initials: SF
authors.lastname: Nielsen
authors.forename: F
authors.initials: F
authors.lastname: Beckmann
authors.forename: J A
authors.initials: JA
authors.lastname: Wert