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Jardini, A. L.
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Topics
Publications (7/7 displayed)
- 2023Microstructural and mechanical characterization of additively manufactured parts of maraging 18Ni300M steel with water and gas atomized powders feedstock
- 2023EBSD-data analysis of an additive manufactured maraging 300 steel submitted to different tempering and aging treatmentscitations
- 2021Deformation-induced martensitic transformation in Co-28Cr-6Mo alloy produced by laser powder bed fusioncitations
- 2021Deformation-induced martensitic transformation in Co-28Cr-6Mo alloy produced by laser powder bed fusion: Comparison surface vs. bulkcitations
- 2019Austenite reversion kinetics and stability during tempering of an additively manufactured maraging 300 steelcitations
- 2019Austenite reversion kinetics and stability during tempering of an additively manufactured maraging 300 steelcitations
- 2019Effect of thermal cycling and aging stages on the microstructure and bending strength of a selective laser melted 300-grade maraging steelcitations
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article
EBSD-data analysis of an additive manufactured maraging 300 steel submitted to different tempering and aging treatments
Abstract
This research was funded by FAPESP grants (2017/17697-5, 2019/00691-0, and 2020/09079-2) and was supported by LNNano – Brazilian Nanotechnology National Laboratory (CNPEM/MCTI) during the use of the electron microscopy open access facility. F. Conde acknowledges the Ph.D. scholarship CNPq 142440/2019-1. In addition, JPO acknowledges funding by national funds from FCT - Fundação para a Ciência e a Tecnologia, I.P., in the scope of the projects LA/P/0037/2020, of the Associate Laboratory Institute of Nanostructures, Nanomodelling, and Nanofabrication – i3N. Finally, Julian A. Avila is a Serra Hunter Fellow and a CNPq fellow. Publisher Copyright: © 2023 The Authors ; Maraging is a high alloy steel sensitive to the precipitation of intermetallics from a supersaturated solid solution during aging heat treatments. The precipitation phenomenon is well described in the literature, which gave rise to the alloy name regarding a martensite matrix with precipitates formed by aging treatment. Many studies have been performed to characterize this material, usually subjected to many sample preparations for transmission microscopy, which is very laborious, and few EBSD analyses. Therefore, in this work, a large study was conducted using electron backscatter diffraction (EBSD) to analyze maraging microstructures through band-contrast, kernel average misorientation (KAM), grain orientation spread (GOS), and misorientation distribution. Our results show that solubilization of the additive manufactured maraging steel resulted in a more homogeneous microstructure with new angle grain boundaries. Furthermore, tempering heat treatments relieve martensite strain, increasing band contrast values. Posterior aging presented a low impact on the results of EBSD analysis. ; publishersversion ; published