About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
Presentation Title |
M-22: Fatigue Evaluation of Additively Manufactured 316L Stainless Steel |
Author(s) |
Khandokar Abu Talha |
On-Site Speaker (Planned) |
Khandokar Abu Talha |
Abstract Scope |
Additively manufactured 316L stainless steel (SS) is of interest to many industries but limited studies have been conducted to understand the material’s fatigue behaviour. A systematic approach was taken to understand the fatigue behaviour of laser powder bed fusion processed 316L SS. Preliminary studies were conducted to observe the fatigue behaviour of bend bar specimens to understand crack initiation, propagation and coalescence mechanism and key parameters (e.g. defects, porosity and surface roughness) affecting them. Especially, the role of porosity in crack initiation has been investigated in detail. Further studies have been conducted to compare the microstructure of these failed specimens in terms of subcellular structure, grain boundary distribution and localised strain deformation. Additional studies were conducted to understand the role of processing parameters such as scanning strategy, build direction and geometry size scale on the microstructure, which can provide valuable insight to understand the crack initiation and propagation mechanism. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Iron and Steel, Other |