Powder-bed fusion additive manufacturing (AM) entails digital, layer-wise materials deposition for complex near-net-shape parts using raw materials in the form of powder. Though still far from its culmination, this technology exhibits immense promise in achieving in-process microstructural engineering and control during layered manufacturing of a wide variety of metals and alloys. In this seminar, I will share some of our recent research efforts to address the major concerns associated with powder-bed fusion AM processing, including mechanical anisotropy, strength and ductility trade-off, and hot tearing. Microstructural engineering approaches are thus proposed to overcome these materials problems, paving the way towards high-performance AM technology.
Dr. Tan Xipeng is currently a Research Assistant Professor at the Department of Mechanical Engineering, National University of Singapore. He received his Ph.D. in materials science from Chinese Academy of Sciences in 2013. After his postdoctoral training in atom probe tomography at Aix-Marseille University and CNRS (France), he joined Nanyang Technology University, Singapore as a Senior Research Fellow working on metal additive manufacturing. His research interests include correlative and in-situ materials characterization, advanced engineering alloys by and for additive manufacturing, and smart manufacturing. He has been a lead author for more than 50 peer-reviewed journal papers in metallurgy, tribology and additive manufacturing, including a few Highly Cited Papers (Web of Science). He also serves as a frequent reviewer for many top journals in materials and manufacturing. His publications have gained a total citation of >3000, with a H-index of 26 in terms of Google Scholar.
Zoom Link: https://umass-amherst.zoom.us/j/96842027788