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Advisor(s)
Abstract(s)
This paper is focused on improving material formability in hybrid wire-arc additive manufacturing comprising metal forming stages to produce small-to-medium batches of customized parts. The methodology involves fabricating wire arc additive manufactured AISI 316L stainless steel parts subjected to mechanical and thermal processing (MTP), followed by microhardness measurements, tensile testing with digital image correlation, as well as microstructure and microscopic observations. Results show that mechanical processing by pre-straining followed by thermal processing by annealing can reduce material hardness and strength, increase ductility, and eliminate anisotropy by recrystallizing the as-built dendritic-based columnar grain microstructure into an equiaxed grain microstructure.
Description
Keywords
wire arc additive manufacturing hybrid additive manufacturing mechanical and thermal processing formability stainless steel
Citation
Pragana JPM, Brito B, Bragança IMF, Silva CMA, Martins PAF. On the Enhancement of Material Formability in Hybrid Wire Arc Additive Manufacturing. Metals. 2024; 14(6):716. https://doi.org/10.3390/met14060716