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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing: Process-induced Microstructures and Defects
Presentation Title The Effects of Novel Heat Treatments on The Microstructure of PBF-L Ti-6Al-4V
Author(s) Nicholas A. Derimow, Jake Benzing, Nik Hrabe, Newell Moser, Orion Kafka, Chad Beamer, Ryan Fishel, Chris Hadley, Mahesh Waje
On-Site Speaker (Planned) Nicholas A. Derimow
Abstract Scope Historically, the physical metallurgy of Ti-6Al-4V alloy has been presented through the context of wrought microstructures and the effects of subsequent heat treatments. While rapid solidification microstructures in Ti-6Al-4V are somewhat understood, our understanding of post-processing heat treatments on the microstructural evolution is lacking, given that AM techniques such as laser powder bed fusion (PBF-L) result in bulk material that fully consists of rapidly solidified/martensitic microstructure. This work systematically investigates the effects of 14 high pressure heat treatments on the microstructural evolution of PBF-L Ti-6Al-4V alloy. The time-temperature-transformation behavior of PBF-L Ti-6Al-4V was interrogated through varied temperature, cooling rate, hold time, tempering, and aging temperature. The effects of the post-processing parameters will be related to features such as porosity, grain size, grain morphology, phase fraction, crystallographic texture, and chemistry. Distribution Statement A: Approved for public release; distribution is unlimited.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Titanium, Characterization

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F-45: Microstructural Evolution and Anisotropy in Stainless Steel 316L from Wire Arc Additive Manufacturing
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