On Monday, March 2, Dr. Guru Dinda gave a seminar over, “Accelerated Discovery of New Ni-based Superalloys Via Additive Manufacturing for Advanced Turbine Engines.” Dr. Dinda is an Assistant Professor of Mechanical Engineering at Wayne State University.
Abstract: Due to the ever-increasing demands for energy efficiency in gas turbines for power plants and aircraft engines, new Ni-based superalloys remain under development. Our current level of theoretical and empirical understanding does not usually permit one to predict the structures and resulting properties of these multicomponent materials. Consequently, the discovery and optimization of many materials comprise trial-and-error experiments. Given the vast universe of potential alloys that can be created by combining various elements from the periodic table, the conventional method of synthesizing and testing samples one at a time is too slow for exploring the broad range of novel materials. Here I disclose a high-throughput alloy development procedure based on the direct laser metal deposition principle coupled with CALPHAD-based solidification modeling that will expedite the alloy discovery process by 100 to 1000 times compared to the current one at a time alloy development practice. In the current alloy development research, the testing of the mechanical properties of the new alloys comes at the later part of the alloy development process. Tensile testing of thousands of conventional test specimen requires a long time and adequate resources. This limits the exploration of a very large set of alloy library. Here I propose a sample fabrication and testing methodology of thousands of miniaturized tensile test samples in a few days at the early stage of the alloy development. It is expected that the proposed high-throughput alloy development technique will be used extensively to explore various alloy libraries to discover many new high-performance materials for structural and functional applications.
Biography: Dr. Guru Dinda is an Assistant Professor in the Department of Mechanical Engineering at Wayne State University (WSU). Dr. Dinda’s research interest is directed toward fundamental understanding of the additive manufacturing processes to reduce lead-time for concept-to-product manufacturing for government and industries. Dr. Dinda has developed a laser additive manufacturing (LAM) facility at WSU that combines laser cladding with rapid prototyping into a solid freeform fabrication process. Dr. Dinda led the development of various LAM processes for manufacturing and remanufacturing of a variety of high-value components made of 4340 steel, Al 4047, Al 7050, Al 7075, Cu-30Ni, Cu-38Ni, Inconel 625, Inconel 718, Inconel 738, Rene 108, Haynes 282, Ti-6Al-4V, GRCop 84, Bi2Se3 and Bi2Te3 using LAM technology. He earned a Ph.D. in materials science and engineering from the University of Saarland, Saarbrucken, Germany in 2006. Dr. Dinda has published 37 journal articles that have been cited more than 1600 times. He also serves as an associate editor for Advances in Materials Science and Engineering Journal, and International Journal of Material Science and Research.