Metal Additive Manufacturing Conference 2019

Duplex materials are commonly used on wrought form due to their high strength and excellent corrosion resistance. Attempts have been made to additively manufacture these over a number of years, often producing very ferritic microstructures. Penn State University have conducted a number of trials as part of a PhD program, using Directed Energy Deposition (DED) with a laser energy source, with subsequent post processing using Hot Isostatic Pressing (HIP). Materials include UNS S32101, UNS S32205, UNS S32507 and UNS S32760. This presentation will focus on the microstructures achieved in the as-built condition and following HIP. Mechanical testing, corrosion testing etc. are ongoing and will hopefully be available before the conference.