| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
A-125: Microstructure and Mechanical Properties of AISI420 Stainless Steel Produced by Wire Arc Additive Manufacturing |
| Author(s) |
Jonas Lunde, Mostafa Kazemipour, Salar Salahi, Ali Nasiri |
| On-Site Speaker (Planned) |
Jonas Lunde |
| Abstract Scope |
Wire arc additive manufacturing (WAAM) with a high deposition-rate and reduced feedstock material’s waste was used to fabricate thin walls of AISI420 stainless steel (SS). The microstructure of the fabricated wall was investigated in detail utilizing optical microscopy (OM), scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and X-ray diffraction (XRD), while mechanical properties were characterized by conducting Vickers microhardness measurement and uniaxial tensile testing. The results demonstrate that the as-printed microstructure of WAAM-420 SS is mainly composed of a martensitic matrix along with chromium-rich carbide particles and delta-ferrite phase. Comparing the obtained yield strength (YS), ultimate tensile strength (UTS), and elongation of the fabricated wall along the deposition direction versus the building direction revealed anisotropic mechanical properties, confirming a better performance along the deposition direction than that of the building direction. The correlations of the as-printed microstructure and the measured mechanical properties of the fabricated wall are discussed thoroughly. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |