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Carnegie Mellon University and Argonne National Laboratory unlock keyhole phenomenon in metal 3D printing

Written by David

February 25, 2019

In a recently published paper, scientists from Carnegie Mellon University and Argonne National Laboratory used high-speed x-ray imaging to study the keyhole effect in powder-based metal 3D printing. A keyhole is a subcategory of void, or pore, that can sometimes be found in AM components. Anthony Rollett, a co-author of the paper and Professor of Materials Science and Engineering at Carnegie Mellon University, said, “The research in this paper will translate into better quality control and better control of working with the machines.” “For additive manufacturing to really take off for the majority of companies, we need to improve the consistency of the finished products. This research is a major step in that direction.” X-ray images of vapor depression forming a keyhole pore. Image via Science Metal powder bed fusion Powder bed fusion (PBF) technologies use a high-power laser to melt polymer or metal powder layer by layer till […]


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