Abstract
GMAW (Gas Metal Arc Welding) based Wire Arc Directed Energy Deposition (WA DED) process is one of the key metal Additive Manufacturing (AM) processes. WA DED process with commercial UNS S31603 filler wires, ER316L and ER316LSi, were applied to investigate whether print deposits satisfy the requirements for manufacturing ASME safety class 1 nuclear pressure valve components. Comprehensive chemical, micro-structural, and mechanical test data on ER316L and ER316LSi print deposits were investigated. Mechanical tests include hardness, bend, CVN, room and high temperature tensile up to 525°C. The test results were compared with ASME SA-182 forging and ASME SA-351 casting valve specifications, and ASTM F3184 standard for AM UNS S31603 with powder bed fusion. From this study, it was concluded that the as-print and solution annealed deposits with ER316LSi filler wire were recommended for manufacturing ASME safety class 1 nuclear pressure valve components.
