@article{VolpatodeSouzaPintoPereiraLemosetal.2023, author = {Volpato, Guilherme and de Souza Pinto Pereira, Adriano and Lemos, Georges and Schmitt, Matthias and Glatzel, Uwe and Pyczak, Florian and Tetzlaff, Ulrich and Fredel, M{\´a}rcio Celso}, title = {Out-of-Equilibrium Formation of Ni3Ti η-Phase in Inconel X-750 Produced via Laser Powder Bed Fusion and Spark Plasma Sintering}, volume = {54}, journal = {Metallurgical and Materials Transactions A: Physical metallurgy and materials science}, number = {5}, publisher = {Springer}, address = {Boston}, issn = {1073-5623}, doi = {https://doi.org/10.1007/s11661-022-06946-1}, pages = {1924 -- 1936}, year = {2023}, language = {en} } @article{VolpatodeSouzaPintoPereiraFredeletal.2024, author = {Volpato, Guilherme and de Souza Pinto Pereira, Adriano and Fredel, M{\´a}rcio Celso and Tetzlaff, Ulrich}, title = {On the Development of a Heat Treatment for Inconel Alloy X-750 Produced Using Laser Powder Bed Fusion}, volume = {55}, journal = {Metallurgical and Materials Transactions A: Physical metallurgy and materials science}, number = {11}, publisher = {Springer}, address = {Boston}, issn = {1073-5623}, doi = {https://doi.org/10.1007/s11661-024-07589-0}, pages = {4585 -- 4599}, year = {2024}, language = {en} } @article{CorreadaSilvaVolpatoFredeletal.2019, author = {Corr{\^e}a da Silva, Cau{\^e} and Volpato, Guilherme and Fredel, M{\´a}rcio Celso and Tetzlaff, Ulrich}, title = {Low-pressure processing and microstructural evaluation of unidirectional carbon fiber-reinforced aluminum-nickel matrix composites}, volume = {2019}, journal = {Journal of Materials Processing Technology}, number = {269}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0924-0136}, doi = {https://doi.org/10.1016/j.jmatprotec.2019.01.032}, pages = {10 -- 15}, year = {2019}, language = {en} } @inproceedings{VolpatoFredelTetzlaff2019, author = {Volpato, Guilherme and Fredel, M{\´a}rcio Celso and Tetzlaff, Ulrich}, title = {Dry Sliding Wear and Fe Contamination of Investment-cast SiC Foam Reinforced Aluminum Matrix Composites}, booktitle = {EuroBrake 2019 Conference Proceedings}, publisher = {FISITA}, address = {Bishops Stortford}, isbn = {978-0-9572076-3-9}, year = {2019}, language = {en} } @article{VolpatoTetzlaffFredel2022, author = {Volpato, Guilherme and Tetzlaff, Ulrich and Fredel, M{\´a}rcio Celso}, title = {A comprehensive literature review on laser powder bed fusion of Inconel superalloys}, volume = {2022}, pages = {102871}, journal = {Additive Manufacturing}, number = {55}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2214-7810}, doi = {https://doi.org/10.1016/j.addma.2022.102871}, year = {2022}, language = {en} } @article{VolpatodeSouzaPintoPereiraNeumeieretal.2025, author = {Volpato, Guilherme and de Souza Pinto Pereira, Adriano and Neumeier, Steffen and Hotza, Dachamir and G{\"o}ken, Mathias and Tetzlaff, Ulrich and Fredel, M{\´a}rcio Celso}, title = {Influence of a Standard Heat Treatment on the Microstructure and Properties of Inconel X-750 Produced by Laser Powder Bed Fusion}, volume = {27}, pages = {2500306}, journal = {Advanced Engineering Materials}, number = {24}, publisher = {Wiley}, address = {Weinheim}, issn = {1527-2648}, doi = {https://doi.org/10.1002/adem.202500306}, year = {2025}, abstract = {The production of nickel-base superalloys through powder bed fusion using a laser beam (PBF-LB) offers a promising method for reducing the cost of aeronautical components, especially those with complex geometries. However, when these materials are processed using PBF-LB, the standard heat treatments developed for conventional manufacturing routes do not consistently yield predictable microstructures or mechanical properties. Thus, this study analyzes how PBF-LB affects the microstructure and mechanical behavior of Inconel alloy X-750 when compared to a hot-rolled counterpart after undergoing a standard precipitation-hardening heat treatment (solution annealing, stabilization, and precipitation). Microstructure is examined using analytical electron microscopy and high-energy X-ray diffraction, while mechanical behavior is assessed through microhardness. Significant differences between both manufacturing routes are detected, so that PBF-LB processing led to an increase in grain size, anisotropy, fraction of low-angle grain boundaries, mean angle of misorientation, and dislocation density. Moreover, PBF-LB promoted the formation of γ′-Ni3(Al,Ti) and η-Ni3Ti phases during solution annealing and stabilization, respectively. Notably, the formation of γ′ contributes to an anomalous microhardness increase observed between these steps. These findings suggest that PBF-LB may inhibit recrystallization and facilitate precipitation during heat treatment, thereby affecting the performance of components produced using this technology.}, language = {en} }