| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture IV: Toward Confident Use in Critical Applications
|
| Presentation Title |
On the Effect of the Applied Stress-ratio on the Fatigue Properties of Ti6Al4V Specimens Produced by Laser Powder Bed Fusion |
| Author(s) |
Antonio Cutolo, Chola Elangeswaran, Nicolas Lammens, Hunor Erdelyi, Gokula Krishna Muralidharan, Brecht Van Hooreweder |
| On-Site Speaker (Planned) |
Antonio Cutolo |
| Abstract Scope |
More and more industrial areas are interested in additive manufacturing (AM) techniques since they can offer multiple advantages over conventional manufacturing processes such as high precision, design freedom and material saving. In order to include AM’ed parts in load bearing applications, fatigue properties of materials processed by AM techniques need proper characterization. In particular, the effect of a non-zero mean stress on fatigue performances is of vital importance for the design of structural components subjected to variable amplitude loads. This research investigates the influence of stress-ratio (R) on fatigue properties of Ti6Al4V specimens produced by laser-powder bed fusion (L-PBF). Miniaturized Ti6Al4V samples were tested with step procedure for different R values. Constant life Haigh diagrams (2x10^6cycle) were generated for L-PBF Ti6Al4V in as-built and machined surface condition. Experimental data were used by a machine-learning algorithm to predict the influence of different R-ratios and surface roughness on the Haigh diagram. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |