| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Oechsner, Matthias
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2024Requirement-specific Adjustment ofResidual Stresses During Cold Extrusion
- 2024Investigation on surface characteristics of wall structures out of stainless steel 316L manufactured by laser powder bed fusioncitations
- 2024Empowering PVD for corrosion protectioncitations
- 2024Einfluss von Plastifizierung und Abkühlrate auf die Korrosionsbeständigkeit beim artgleichen Rührreibschweißen von EN AW-7020 und EN AW-7075 – Teil 1
- 2024Mechanistic insights into chemical corrosion of AA1050 in ethanol‐blended fuels with water contamination via phase field modeling
- 2024Mechanical Characterization Potentials of Aluminide Diffusion Coatings on Molybdenum Substrates
- 2024Calibration of the residual stresses with an active die during the ejection phase of cold extrusion
- 2024On the Monotonic and Cyclic Behavior of an Al‐Mg‐Zn‐Cu‐Si Compositionally Complex Alloy
- 2023Comparison of Cast, Wrought, and LPBF Processed IN718 Concerning Crack Growth Threshold and Fatigue Crack Growth Behaviorcitations
- 2023On the Monotonic and Cyclic Behavior of an Al‐Mg‐Zn‐Cu‐Si Compositionally Complex Alloycitations
- 2023Increase in residual lifetime due to low amplitude cycles and dwell times at room temperature: Observations and suspected mechanisms
- 2023Investigation on a predetermined point of failure for stainless steel 316L pressure loaded components made by laser powder bed fusion through stress analysis and experimental testingcitations
- 2022Investigation of Material Properties of Wall Structures from Stainless Steel 316L Manufactured by Laser Powder Bed Fusioncitations
- 2022Robust determination of fatigue crack propagation thresholds from crack growth datacitations
- 2022Cooling rate as a process parameter in advanced roll forming to tailor microstructure,mechanical and corrosion properties of EN AW 7075 tubes
- 2021On the Influence of Control Type and Strain Rate on the Lifetime of 50CrMo4
- 2021On the Influence of the Microstructure upon the Fatigue and Corrosion Fatigue Behavior of UNS N07718
- 2021Calibration of the residual stresses with an active die during the ejection phase of cold extrusioncitations
- 2020On the Influence of Control Type and Strain Rate on the Lifetime of 50CrMo4citations
- 2020Application of Damage Mechanics and Polynomial Chaos Expansion for Lifetime Prediction of High-Temperature Components Under Creep-Fatigue Loadingcitations
- 2020Effect of Friction Stir Processing on Microstructural, Mechanical, and Corrosion Properties of Al-Si12 Additive Manufactured Componentscitations
- 2018Additive Manufacturing of Glass Components - Exploring the Potential of Glass Connections by Fused Deposition Modelingcitations
- 2014Influence of load signal form and variable amplitude loading on the corrosion fatigue behaviour of aluminium alloyscitations
Places of action
| Organizations | Location | People |
|---|
article
Comparison of Cast, Wrought, and LPBF Processed IN718 Concerning Crack Growth Threshold and Fatigue Crack Growth Behavior
Abstract
<jats:title>Abstract</jats:title><jats:p>This study focuses on the influence of microstructure and ductility on the short crack behavior and the fatigue crack growth (FCG) threshold. For this, an additively manufactured batch of the nickel-based alloy IN718, made via Laser Powder Bed Fusion (LPBF) process, is compared to both conventionally wrought and cast IN718 material. An initial characterization revealed significant differences in grain structure, from regular fine grained wrought material to large grains of several millimeters in diameter in the cast variant and a chessboard-like grain structure typical for LPBF. The ductility parameters of IN718-LPBF and wrought IN718 are comparable at room temperature, but at 650 °C the LPBF-variant shows macroscopic brittle fracture. The fatigue crack behavior both in the short and long crack regime is investigated in air at 650 °C. To produce minimal crack growth increments of about 1 μm, a compressive precracking and subsequent threshold test procedure with stepwise load increase has been adapted for high temperature testing. To assess the short crack behavior, cyclic R-curves have been generated taking the influence of three different stress ratios (R = −1, 0, and 0.5) into account. As expected, increasing crack closure mechanisms at higher stress ratios lead to higher stress intensity amplitudes ΔKI necessary to initiate crack growth. The crack growth resistance of the LPBF-processed variant is higher compared to wrought IN718. In the long crack regime, the wrought alloy yields higher crack growth rates compared to LPBF and cast IN718. An expected R-ratio dependency is observed for all material states.</jats:p>