Vincent Maurel

Fatigue crack growth in cast austenitic steel in thermo-mechanical fatigue regime

Zeineb Meskine, Vincent Maurel, Fabien Szmytka, Luc Rémy et autres

This study aims to assess the thermo-mechanical fatigue (TMF) crack growth mechanisms and associated fatigue crack growth rate (FCGR) for loadings implying large-scale yielding conditions. The target component is made of a cast alloy with a coarse microstructure with grain sized to …

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In situ monitoring of the martensitic transformation induced by plasticity in a stainless steel

Vincent Maurel

Background: The current understanding of strain-induced martensitic transformation in AISI 304L stainless steel lacks comprehensive non-destructive testing (NDT) for effective monitoring, limiting the ability to assess phase trans- formation in industrial applications. Objective: This study aims to develop and evaluate NDT methods …

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Damage evolution in thermal barrier coating under thermal gradient mechanical fatigue loading

Emna Ben Romdhane, Vincent Maurel, Lara Mahfouz, Florent Coudon et autres

This research aims to clarify the driving forces behind interfacial damage in thermal barrier coatings associated with buckling-driven delamination. Using an artificial interfacial defect processed by laser shock, thermomechanical fatigue loadings are investigated both with or without a through-thickness temperature gradient. In …

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In Situ Monitoring of the Martensitic Transformation Induced by Plasticity in a Stainless Steel

Wajih Jbara, A. Köster, Matthieu Rambaudon, Laurent Daniel et autres

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Localization of embrittlement in CMAS-infiltrated thermal barrier coatings via laser shock experiments

C. Billard, Christoph Mikulla, Vincent Guipont, Ravisankar Naraparaju et autres

As the operation temperature of aero-engine increases, the threat of molten deposits, usually caused by volcanic ash or sand ingestion has a major concern to the durability of these systems. In thermal barrier coatings, the ceramic topcoat (TC) layer made of partially …

Static recrystallization of an advanced Ti2AlNb alloy after compression in single- β and two-phase β +O and β + α2 domains

Jérôme Delfosse, Y. Millet, Vincent Maurel, Pierre Sallot et autres

International audience

In situ and ex situ characterization of microstructure evolution of a γ-γ’ coating on CMSX-4 Plus superalloy during thermal cycling: Insights into Pt diffusion and phase transformations

Nor Hadzfizah Binti Mohd Radi, Sylvain Dépinoy, Carlos Monteiro, Fabrice Gaslain et autres

The microstructure evolution of a Pt-rich γ-γ’ coating deposited on a third generation CMSX-4 Plus nickel-based superalloy was investigated during relatively short thermal cycles (from 300 °C to 1100 °C with a dwell time of 5 min at 1100 °C) using both …

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Short fatigue crack growth sensitivity to thermo-mechanical fatigue loading

Nicolas Leost, Djamel Missoum-Benziane, Matthieu Rambaudon, Laurent Cameriano et autres

Most high-temperature components are subject to out-of-phase thermomechanical fatigue (OP-TMF), which induces crack growth at low temperatures. However, OP-TMF has been little studied in the context of short cracks. This study focuses on the experimental sensitivity of OP-TMF loading conditions playing on …

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A plastic correction algorithm for full-field elasto-plastic finite element simulations: critical assessment of predictive capabilities and improvement by machine learning

Abhishek Palchoudhary, Simone Peter, Vincent Maurel, Cristian Ovalle et autres

Abstract This paper introduces a new local plastic correction algorithm that is aimed at accelerating elasto-plastic finite element (FE) simulations for structural problems exhibiting localised plasticity (around e.g. notches, geometrical defects). The proposed method belongs to the category of generalised multi-axial Neuber-type …

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A multi-scale probabilistic methodology to predict high-cycle fatigue lifetime for alloys with process-induced pores

Abhishek Palchoudhary, Cristian Ovalle, Vincent Maurel, Pierre Kerfriden

A multi-scale methodology is developed in conjunction with a probabilistic fatigue lifetime model for structures with pores whose exact distribution, i.e. geometries and locations, is unknown. The method takes into account uncertainty in fatigue lifetimes in structures due to defects at two …

Fatigue life prediction at mesoscopic scale of samples containing casting defects: A novel energy based non-local model

Arjun Kalkur Matpadi Raghavendra, Vincent Maurel, Lionel Marcin, Henry Proudhon

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Effect of free surface, oxide and coating layers on rafting in $γ-γ'$ superalloys

Wajih Jbara, Vincent Maurel, Kaïs Ammar, Samuel Forest

Complex microstructure evolution has been observed \rev{both bare and coated } Ni-based single crystal superalloys. Rafting and $γ'$ depletion are investigated in this study through a brief experimental analysis and a detailed phase field model to account for mechanical-diffusion coupling. The proposed …

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