Multi-material Additive Manufacturing: Processing and Heterogeneous Materials Design: Innovative AM Approaches for Multi-functions
Sponsored by: TMS Additive Manufacturing Committee
Program Organizers: Hang Yu, Virginia Polytechnic Institute And State University; Steven Boles, Hong Kong Polytechnic University; Michael Gibson, Desktop Metal; Lonnie Love, Oak Ridge National Laboratory; Leon Prentice, SDI Ltd
Wednesday 8:00 AM
November 4, 2020
Room: Virtual Meeting Room 5
Location: MS&T Virtual
8:00 AM
Material Layering with Binder Jet 3D Printing to Improve Magnetocaloric Functionality: Erica Erickson1; Katerina Kimes1; Jeffrey Martin1; Emma Dickinson1; Markus Chmielus1; 1University of Pittsburgh
Binder jet 3D printing (BJ-3DP) creates parts through layering of powder in a build bed and selective deposition of an organic binder. BJ-3DP creates parts that are stress-free and maintain the properties and microstructure of the powder until the post-processing sintering phase, which can be used to tailor porosity and microstructure. BJ-3DP is useful especially for functional magnetic materials that are extremely sensitive to composition changes of even an atomic percent and can have increased responses when layered strategically. However, there are a few areas of functionality missing in the current BJ-3DP commercial systems: small print beds for researching small batches of powder, ability to print multiple materials within the same run, and capacity to print within a magnetic field. This work describes a self-designed and -built small-scale BJ-3DP device that addresses these concerns and was used to produce samples with layered compositions of magnetocaloric alloys which were then characterized.
8:20 AM Invited
Multimaterial, Multifunctional Design of Metallic Components: Joseph Newkirk1; Frank Liou1; 1Missouri University of Science and Technology
Additive manufacturing offers many possible advantages, including the possibility of making a single metallic component from different materials as a single piece, eliminating assembly steps. While feasible, there are many issues that stand in the way of achieving such a fabrication possibility, such as deleterious reaction products, residual stresses, and defects. This talk will discuss the significant barriers to accomplishing wide spread fabrication of multimaterial components. In addition solutions, both in terms of design strategies and equipment design, will be discussed.
9:00 AM Invited
Direct Digital Manufacturing (DDM): The Integration of Multimaterials, Additive and Subtractive Manufacturing: Charles Newton1; 1nScrypt
Additive Manufacturing (AM) has received significant attention in recent years with improvements in materials and deposition processes. For purely structural applications, additive manufacturing can be the 100% solution. With an increasing push in multifunctional or smart structures and system solutions for the DoD, AM then becomes maybe an 80% solution with the need of additional processes like subtractive as well as printed materials that may require curing or sintering. To be truly multifunctional, multimaterial and added electronic functionality will be required. With this, additional material deposition technologies need to be integrated. In partnership with the DoD, nScrypt and parent company Sciperio has been strategically moving to a Direct Digital Manufacturing platform. This focus is looking to integrate multiple processes, materials and feedstock formats with post processing and metrology which we term DDM. This presentation will provide an overview of DDM and Factory in a Box (FIX).