Carnegie Mellon University — Materials Science and Engineering
Pittsburgh, PA · US · publishing in AM since 2012
Microstructure evolution and X-ray tomography of AM defects
Tony Rollett is U.S. Steel Professor of Metallurgical Engineering and Materials Science at Carnegie Mellon University and co-director of the NextManufacturing Center. He has been central to bringing synchrotron X-ray tomography and high-energy diffraction microscopy to bear on metal AM, characterising keyhole and lack-of-fusion porosity, sub-surface defects, and recrystallisation textures in LPBF and EBM. His Argonne Advanced Photon Source campaigns have produced widely-used in-situ datasets revealing keyhole instability dynamics in real time. Rollett's broader contributions include texture modelling, mesoscale microstructure simulation, and statistical correlation of pore populations to fatigue performance in Ti-6Al-4V and IN718. He has trained a generation of AM materials researchers now in academic and industrial leadership positions.
Last reviewed: 2026-05-16 · Sources: 2
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