About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmental Degradation of Additively Manufactured Alloys
|
Presentation Title |
Corrosion Properties of Additively Manufactured Duplex Stainless Steel |
Author(s) |
Greg Nigon, O. Burkan Isgor, Somayeh Pasebani |
On-Site Speaker (Planned) |
Greg Nigon |
Abstract Scope |
Additively manufactured duplex stainless steel 2205 components were built via selective laser melting and heat treated to obtain the duplex microstructure. Gas atomized duplex stainless steel 2205 powder (D90 <45m) was procured from Carpenter and characterized for morphology and particle size distribution. The parts were built using an OR Creator SLM machine with 250W Laser and nitrogen environment. The process parameters were selected for optimal density and microhardness. Solution annealing was done to obtain the dual phase microstructure. The microstructure was characterized by optical and electron microscopy. Ferrite content was measured by EBSD. Parts produced by SLM were characterized for corrosion properties with 3.5% NaCl used as the electrolyte. Characterization was done using the electrochemical tests of OCP monitoring, polarization resistance, potentiostatic EIS, and cyclic polarization. Comparisons were made between as-built and heat treated samples produced by SLM. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |