About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing Fatigue and Fracture: Effects of Surface Roughness, Residual Stress, and Environment
|
Presentation Title |
Microstructural Evolution and Mechanical Behaviour of L-PBF Processed 17-4 PH Stainless Steel |
Author(s) |
Bijit Kalita, Jayaganthan R. |
On-Site Speaker (Planned) |
Bijit Kalita |
Abstract Scope |
Laser Powder Bed Fusion (L-PBF) is the most prominent additive manufacturing method that provides higher accuracy and powder proficiency in comparison to other methods. Additively manufactured 17-4 PH stainless steel exhibited a dendritic solidification microstructure in the as-built condition. This study provides an insight into the comparison of the tensile and fracture toughness properties between 17-4 PH SS samples processed by L-PBF 17-4 PH samples. The tests were conducted according to the international standard ASTM E8, E399, E647 and the effect of different heat treatments were also studied. FCG tests were conducted under force-controlled mode at room temperature. Microstructure characterization and fractography analysis were carried out to elaborate the crack growth mechanism with respect to different heat treatment conditions and crack growth directions. The L-PBF processed sample displayed significantly higher ductility and ultimate tensile strength (UTS) with respect to wrought samples. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Mechanical Properties, Magnetic Materials |