About this Abstract |
| Meeting |
TMS Specialty Congress 2026
|
| Symposium
|
World Congress on Reproducibility, Qualification, and Standards Development of Additive Manufacturing and Beyond (RQSD 2026)
|
| Presentation Title |
Surface Post-Processing Effects on Microstructure and Fatigue Behavior of Additively Manufactured Stainless Steels |
| Author(s) |
Jackelin Amorin, Maziar Ghazinejad |
| On-Site Speaker (Planned) |
Jackelin Amorin |
| Abstract Scope |
Additive manufacturing (AM) stainless steel enables complex geometries while retaining desirable material properties such as high endurance and corrosion resistance. However, AM components often exhibit unpredictable mechanical behavior due to process-induced defects. Post-processing techniques such as shot peening are therefore commonly applied to improve mechanical performance. This study investigates the fatigue life, residual stress, and microstructural changes resulting from different levels of shot peening of stainless steels fabricated by direct metal laser sintering (DMLS). XRD measurement of the shot-peened samples allows us to estimate the residual strains at their surfaces. This analysis will then inform the effects of induced stresses on the mechanical properties of AM parts, including their J-integral and fatigue behavior. In particular, we plan to develop and calibrate a fatigue crack growth model that predicts the number of cycles to failure based on residual stress, AM defects, and microstructure for developing standards in component failure assessment. |
| Proceedings Inclusion? |
Undecided |