|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
||Additive Manufacturing of Multi-material Metal Structures Using Powders Produced by Machining
||Puli Saikiran, Harish Singh Dhami, Priti Ranjan Panda, Koushik Viswanathan
|On-Site Speaker (Planned)
Graded multi-material structures (GMMS) are engineered to exhibit spatially controlled heterogeneous properties. These structures are usually built using metal additive manufacturing (AM), employing gas or plasma atomized stock powders, and have emerged as promising solutions in many applications. Yet, the use of these structures has been severely limited by the high cost of powder material. This work demonstrates the use of powders produced via machining that promises to be a potential alternative route for producing GMMS. Metal powders (SS304 and IN625) of various sizes and morphologies are produced via conventional multipoint milling with suitable tool path design and process parameter control. Powders are then controllably delivered using a customized delivery system that specifically handles non-spherical particles. GMMS ranging from multiscale architected materials to blended in-situ alloys are then fabricated using a conventional laser-based AM system. Their performance was quantified using a range of ex-situ microstructural analysis techniques and mechanical testing.
||Additive Manufacturing, Powder Materials, Characterization