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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Markl, Matthias
Friedrich-Alexander-Universität Erlangen-Nürnberg
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024A Scan Strategy Based Compensation of Cumulative Heating Effects in Electron Beam Powder Bed Fusion
- 2024A CALPHAD-Informed Enthalpy Method for Multicomponent Alloy Systems with Phase Transitionscitations
- 2024Correction: A Scan Strategy Based Compensation of Cumulative Heating Effects in Electron Beam Powder Bed Fusion
- 2024Effect of Scanning Strategies on Grain Structure and Texture of Additively Manufactured Lattice Struts: A Numerical Explorationcitations
- 2024Numerical Microstructure Prediction for Lattice Structures Manufactured by Electron Beam Powder Bed Fusioncitations
- 2024Comprehensive numerical investigation of laser powder bed fusion process conditions for bulk metallic glassescitations
- 2023High-Throughput Numerical Investigation of Process Parameter-Melt Pool Relationships in Electron Beam Powder Bed Fusioncitations
- 2023Geometrical Influence on Material Properties for Ti6Al4V Parts in Powder Bed Fusioncitations
- 2023A Ray Tracing Model for Electron Optical Imaging in Electron Beam Powder Bed Fusioncitations
- 2023Revealing bulk metallic glass crystallization kinetics during laser powder bed fusion by a combination of experimental and numerical methodscitations
- 2023Numerical Design of CoNi-Base Superalloys With Improved Casting Structurecitations
- 2023Evaluation of Additively-Manufactured Internal Geometrical Features Using X-ray-Computed Tomographycitations
- 2022Basic Mechanism of Surface Topography Evolution in Electron Beam Based Additive Manufacturingcitations
- 2022Predictive simulation of bulk metallic glass crystallization during laser powder bed fusioncitations
- 2021Numerical Alloy Development for Additive Manufacturing towards Reduced Cracking Susceptibilitycitations
- 2021A Novel Approach to Predict the Process-Induced Mechanical Behavior of Additively Manufactured Materialscitations
- 2021How electron beam melting tailors the Al-sensitive microstructure and mechanical response of a novel process-adapted y-TiAl based alloycitations
- 2020Modeling and Simulation of Microstructure Evolution for Additive Manufacturing of Metals: A Critical Reviewcitations
- 2019MultOpt++: a fast regression-based model for the development of compositions with high robustness against scatter of element concentrationscitations
- 2018Development of Single-Crystal Ni-Base Superalloys Based on Multi-criteria Numerical Optimization and Efficient Use of Refractory Elementscitations
Places of action
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article
Numerical Alloy Development for Additive Manufacturing towards Reduced Cracking Susceptibility
Abstract
<jats:p>In this work, we investigated the viability of established hot cracking models for numerically based development of crack-resistant nickel-base superalloys with a high γ′ volume fraction for additive manufacturing. Four cracking models were implemented, and one alloy designed for reduced cracking susceptibility was deduced based on each cracking criterion. The criteria were modeled using CALPHAD-based Scheil calculations. The alloys were designed using a previously developed multi-criteria optimization tool. The commercial superalloy Mar-M247 was chosen as the reference material. The alloys were fabricated by arc melting, then remelted with laser and electron beam, and the cracking was assessed. After electron beam melting, solidification cracks were more prevalent than cold cracks, and vice versa. The alloys exhibited vastly different crack densities ranging from 0 to nearly 12 mm−1. DSC measurements showed good qualitative agreement with the calculated transition temperatures. It was found that the cracking mechanisms differed strongly depending on the process temperature. A correlation analysis of the measured crack densities and the modeled cracking susceptibilities showed no clear positive correlation for any crack model, indicating that none of these models alone is sufficient to describe the cracking behavior of the alloys. One experimental alloy showed an improved cracking resistance during electron beam melting, suggesting that further development of the optimization-based alloy design approach could lead to the discovery of new crack-resistant superalloys.</jats:p>