Fields of expertise
Selective Laser Melting
BiographyRoland Logé is an associate professor at EPFL, with a primary affiliation to the Materials Institute, and a secondary affiliation to the Microengineering Institute.
After graduating in 1994 at UCL (Belgium) in Materials Engineering, he earned a Master of Science in Mechanics in 1995, at UCSB Santa Barbara (USA). He received his PhD at Mines Paristech-CEMEF (France) in 1999, where he specialized in metal forming and associated microstructure evolutions. After a postdoc at Cornell University (USA) between 1999 and 2001, he entered CNRS in France.
In 2008, he was awarded the ALCAN prize from the French Academy of Sciences, together with Yvan Chastel.
In 2009 he became head of the Metallurgy-Structure-Rheology research group at CEMEF.
In 2011, he launched a “Groupement de Recherche” (GDR), funded by CNRS, networking most of the researchers in France involved in recrystallization and grain growth.
In 2013, he became Research Director at CNRS.
In March 2014 he joined EPFL as the head of the Laboratory of Thermomechanical Metallurgy.
Current workRoland Logé is active in the field of processing of metals and alloys in the solid state, focusing on the ability to tailor the microstructures, and the associated material properties. Thermal and mechanical paths are simulated experimentally and numerically, together with the induced microstructure changes.
While most of the activities were so far related to recrystallization, grain growth, textures and grain boundary engineering, extensions of the microstructure design approach progressively include precipitation, phase transformation, and grain refinement phenomena, with applications to bulk forming as well as powder metallurgy and additive manufacturing.
Effect of Ag Addition on the Hot Deformation, Constitutive Equations and Processing Maps of a Hot Extruded Mg-Gd-Y AlloyMetallurgical And Materials Transactions A-Physical Metallurgy And Materials Science. 2020-08-13. DOI : 10.1007/s11661-020-05937-4.
Enhanced strength and toughness of bulk ultrafine grained Cu by nacre-inspired lamellar structureJournal Of Alloys And Compounds. 2020-06-15. DOI : 10.1016/j.jallcom.2020.154234.
Annealing hardening and softening of an ultrafine grained Cu-4.5vol.% Al2O3 nanocompositeMaterials Science And Engineering A-Structural Materials Properties Microstructure And Processing. 2020-03-19. DOI : 10.1016/j.msea.2020.139126.
Laser shock peening: A promising tool for tailoring metallic microstructures in selective laser meltingJournal Of Materials Processing Technology. 2019-04-01. DOI : 10.1016/j.jmatprotec.2018.11.024.
Effect of cooling conditions on microstructures and mechanical behaviors of reheated low-carbon weld metalsMaterials Science And Engineering A-Structural Materials Properties Microstructure And Processing. 2019-01-28. DOI : 10.1016/j.msea.2018.12.035.
Dynamic recrystallization study of a Fe-Mn-Si based shape memory alloy in constant and variable thermomechanical conditionsMaterials Characterization. 2019-06-01. DOI : 10.1016/j.matchar.2019.04.016.
3D laser shock peening as a way to improve geometrical accuracy in selective laser meltingInternational Journal Of Advanced Manufacturing Technology. 2019-04-01. DOI : 10.1007/s00170-018-3033-3.
Microstructure and Mechanical Properties of a Multiphase FeCrCuMnNi High-Entropy AlloyJournal Of Materials Engineering And Performance. 2019-04-01. DOI : 10.1007/s11665-019-04003-4.
Evaluation of the mechanical properties of the heat treated FeCrCuMnNi high entropy alloyMaterials Chemistry and Physics. 2019. DOI : 10.1016/j.matchemphys.2018.09.033.
Electron backscatter diffraction study of variant selection during ordering phase transformation in L1(0)-type red gold alloyJournal Of Applied Crystallography. 2019-10-01. DOI : 10.1107/S1600576719011890.
Healing cracks in selective laser melting by 3D laser shock peeningAdditive Manufacturing. 2019-12-01. DOI : 10.1016/j.addma.2019.100881.
Evidence of new twinning modes in magnesium questioning the shear paradigmJOURNAL OF APPLIED CRYSTALLOGRAPHY. 2018. DOI : 10.1107/S1600576718005678.
Intricate morphologies of laths and blocks in low-carbon martensitic steelsMATERIALS AND DESIGN. 2018. DOI : 10.1016/j.matdes.2018.05.033.
Mechanical behavior and texture development of over-aged and solution treated Al-Cu-Mg alloy during multi-directional forgingMATERIALS CHARACTERIZATION. 2018. DOI : 10.1016/j.matchar.2017.11.048.
Microstructure and flow stress evolution during hot deformation of 304L austenitic stainless steel in variable thermomechanical conditionsMaterials Science and Engineering: A. 2018. DOI : 10.1016/j.msea.2017.11.042.
Microstructural evolution and mechanical property development with nickel addition in low-carbon weld butt jointsJournal of Materials Processing Technology. 2018. DOI : 10.1016/j.jmatprotec.2018.07.009.
Study on Bainite/Martensite Transformation in Reheated Weld Metals2018-01-01. 10th International Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications (THERMEC), Paris, FRANCE, Jul 09-13, 2018. p. 645-650. DOI : 10.4028/www.scientific.net/MSF.941.645.
Strain-induced dissolution of Y-Ti-O nano-oxides in a consolidated ferritic oxide dispersion strengthened (ODS) steelMaterialia. 2018. DOI : 10.1016/j.mtla.2018.11.002.
The double-edge effect of second-phase particles on the recrystallization behaviour and associated mechanical properties of metallic materialsProgress in Materials Science. 2018. DOI : 10.1016/j.pmatsci.2017.10.004.
The relationship between low-temperature toughness and secondary crack in low-carbon bainitic weld metalsMaterials Characterization. 2018. DOI : 10.1016/j.matchar.2018.09.012.
On the benefits of a stress criterion for the simulation of cup drawing processInternational Journal Of Material Forming. 2018. DOI : 10.1007/s12289-016-1313-8.
Non-isothermal aging of a high-Zn-containing Al-Zn-Mg-Cu alloy: microstructure and mechanical propertiesMATERIALS SCIENCE AND TECHNOLOGY. 2018. DOI : 10.1080/02670836.2017.1410369.
Competition between intragranular and intergranular deformation mechanisms in ODS ferritic steels during hot deformation at high strain rateJournal of Materials Science. 2017. DOI : 10.1007/s10853-017-1730-1.
Controlling grain structure and texture in Al-Mn from the competition between precipitation and recrystallizationActa Materialia. 2017. DOI : 10.1016/j.actamat.2017.09.032.
Accounting for material parameters scattering in rolled zinc formabilityJournal of Materials Processing Technology. 2017. DOI : 10.1016/j.jmatprotec.2017.02.021.
Variant selection in surface martensiteJournal of Applied Crystallography. 2017. DOI : 10.1107/S160057671701398X.
Method and Device for Implementing Laser Shock Peening or Warm Laser Shock Peening During Selective Laser MeltingEP3147048 ; US10596661 ; US2017087670 ; EP3147048 . 2017.
Method and device for fabrication of 3d multi - material (composite) parts by selective laser melting combined with laser welding and cuttingWO2017108645 . 2017.
3D Laser Shock Peening – A new method for the 3D control of residual stresses in Selective Laser MeltingMaterials and Design. 2017. DOI : 10.1016/j.matdes.2017.05.083.
Heating rate effect on particle stimulated nucleation and grains structure during non-isothermal annealing of multi-directionally forged solution treated AA2024Materials Characterization. 2017. DOI : 10.1016/j.matchar.2017.03.025.
Numerical simulation of mechanical deformation of semi-solid material using a level-set based finite element methodModelling and Simulation in Materials Science and Engineering. 2017. DOI : 10.1088/1361-651X/aa788e.
Effect of concurrent precipitation on the texture evolution during continuous heating of multi directionally forged solution treated Al-Cu-Mg alloyMaterials Characterization. 2017. DOI : 10.1016/j.matchar.2017.07.033.
The surprising influence of continuous alternating electric current on recrystallization behaviour of a cold-rolled Aluminium alloyMaterials Characterization. 2017. DOI : 10.1016/j.matchar.2017.04.036.
Recrystallization behavior of multi-directionally forged over-aged and solution treated Al-Cu-Mg alloy during non-isothermal annealingMaterials and Design. 2017. DOI : 10.1016/j.matdes.2017.07.011.
Hot deformation of a Fe-Mn-Al-C steel susceptible of κ-carbide precipitationMaterials Science & Engineering A. 2017. DOI : 10.1016/j.msea.2017.02.060.
Tailoring residual stress profile of Selective Laser Melted parts byLaser Shock PeeningAdditive Manufacturing. 2017. DOI : 10.1016/j.addma.2017.05.008.
A review of dynamic recrystallization phenomena in metallic materialsMaterials & Design. 2016. DOI : 10.1016/j.matdes.2016.09.012.
On the sluggish recrystallization of a cold-rolled Al–Mn–Fe–Si alloyJournal of Materials Science. 2016. DOI : 10.1007/s10853-015-9486-y.
Zener PinningReference Module in Materials Science and Materials Engineering; Oxford: Elsevier, 2016. p. 1-8.
Mean field modelling of dynamic and post-dynamic recrystallization during hot deformation of Inconel 718 in the absence of δ phase particlesMaterials Science and Engineering a. 2016. DOI : 10.1016/j.msea.2015.12.102.
Numerical Modeling of Tube Forming by HPTR Cold Pilgering ProcessJournal of Materials Engineering and Performance. 2016. DOI : 10.1007/s11665-016-2203-4.
Assessment of simplified 2D grain growth models from numerical experiments based on a level set frameworkComputational Materials Science. 2014. DOI : 10.1016/j.commatsci.2014.05.060.
Anisotropic mechanical behavior and formability criterion for zinc sheetsJournal of Materials Processing Technology. 2014. DOI : 10.1016/j.jmatprotec.2014.06.023.
Multipass forging of Inconel 718 in the delta-Supersolvus domain: assessing and modeling microstructure evolution2014. 2nd European Symposium on Superalloys and their Applications, Giens, FRANCE, MAY 12-16, 2014. DOI : 10.1051/matecconf/20141412001.
Development of a level set methodology to simulate grain growth in the presence of real secondary phase particles and stored energy – Application to a nickel-base superalloyComputational Materials Science. 2014. DOI : 10.1016/j.commatsci.2014.03.054.
Development of adapted material testing for cold pilgering process of ODS tubesThe Current State-of-the-Art on Material Forming; Aveiro, 2013. p. 2243-2251.
Strain induced abnormal grain growth in nickel base superalloysSydney, NSW.
Relationships between mechanical behavior and microstructural evolutions in Fe 9Cr-ODS during the fabrication route of SFR cladding tubesJournal of Nuclear Materials. 2013. DOI : 10.1016/j.jnucmat.2013.04.052.
An anisotropic stress based criterion to predict the formability and the fracture mechanism of textured zinc sheetsJournal of Materials Processing Technology. 2013. DOI : 10.1016/j.jmatprotec.2012.12.006.
EBSD coupled to SEM in situ annealing for assessing recrystallization and grain growth mechanisms in pure tantalumJournal of Microscopy. 2013. DOI : 10.1111/jmi.12034.
Thermo-mechanical fatigue behaviour of welded tubular parts made of ferritic stainless steelInternational Journal of Fatigue. 2013. DOI : 10.1016/j.ijfatigue.2013.04.004.
Evolution of microstructure and twin density during thermomechanical processing in a γ-γ' nickel-based superalloyActa Materialia. 2012. DOI : 10.1016/j.actamat.2012.06.028.
Using cross stamping to test Zinc sheets formability2012.
Techniques for modelling microstructure in metal forming processesMicrostructure Evolution in Metal Forming Processes; Elsevier Ltd., 2012. p. 17-34.
Fast in-situ annealing stage coupled with EBSD: A suitable tool to observe quick recrystallization mechanismsMaterials Characterization. 2012. DOI : 10.1016/j.matchar.2012.04.020.
Understanding and Modeling of Grain Boundary Pinning in Inconel 718Superalloys 2012; John Wiley and Sons, 2012. p. 73-82.
A simple approach for the modeling of an ODS steel mechanical behavior in pilgering conditionsJournal of Nuclear Materials. 2012. DOI : 10.1016/j.jnucmat.2011.10.013.
Assessment of a new fabrication route for Fe-9Cr-1W ODS cladding tubesJournal of Nuclear Materials. 2012. DOI : 10.1016/j.jnucmat.2011.12.013.
Identification of cyclic and anisotropic behaviour of ODS steels tubes2011. 11th International Conference on the Mechanical Behavior of Materials, ICM11, 2011. DOI : 10.1016/j.proeng.2011.04.201.
Level set framework for the finite-element modelling of recrystallization and grain growth in polycrystalline materialsScripta Materialia. 2011. DOI : 10.1016/j.scriptamat.2010.11.032.
A new approach to modeling the flow curve of hot deformed austeniteISIJ International. 2011. DOI : 10.2355/isijinternational.51.945.
A two-site mean field model of discontinuous dynamic recrystallizationMaterials Science and Engineering A. 2011. DOI : 10.1016/j.msea.2011.06.023.
Theoretical and experimental evaluation of the formability of anisotropic zinc sheets2011.
Quasi In situ EBSD investigation of static recrystallization in 304L stainless steel at elevated temperature2nd International Conference on Material Modelling, Paris, France, August 31- September 2, 2011.
About the possibility of grain boundary engineering via hot-working in a nickel-base superalloyScripta Materialia. 2010. DOI : 10.1016/j.scriptamat.2010.02.019.
3D finite element model of semi-solid permeability in an equiaxed granular structureComputational Materials Science. 2010. DOI : 10.1016/j.commatsci.2010.04.042.
Effect of thermomechanical processes on Σ3 grain boundary distribution in a nickel base superalloyBerlin.
A multi-scale approach for high cycle anisotropic fatigue resistance: Application to forged componentsMaterials Science and Engineering A. 2010. DOI : 10.1016/j.msea.2010.03.042.
A multiscale analysis of ductile steel grades damage and fracture mechanisms2009. 12th International Conference on Fracture 2009, ICF-12, 2009.
Adaptive mesh refinement and automatic remeshing in crystal plasticity finite element simulationsModelling and Simulation in Materials Science and Engineering. 2009. DOI : 10.1088/0965-0393/17/7/075012.
A multiscale approach to model the anisotropic deformation of lithospheric platesGeochemistry, Geophysics, Geosystems. 2009. DOI : 10.1029/2009GC002423.
Finite element model of primary recrystallization in polycrystalline aggregates using a level set frameworkModelling and Simulation in Materials Science and Engineering. 2009. DOI : 10.1088/0965-0393/17/6/064006.
Numerical life prediction of mechanical fatigue for hot forging toolsInternational Journal of Material Forming. 2009. DOI : 10.1007/s12289-009-0537-2.
Structural reactivation in plate tectonics controlled by olivine crystal anisotropyNature Geoscience. 2009. DOI : 10.1038/ngeo528.
Prediction of tantalum microstructure evolution during thermomechanical treatments using FEM calculations with a dislocation density based constitutive law2008. 9th International Conference on Technology of Plasticity, ICTP 2008, 2008.
Modelling dynamic and post-dynamic recrystallization of Zy-4 during and after hot extrusion2008. p. 216-223.
Linking plastic deformation to recrystallization in metals using digital microstructuresPhilosophical Magazine. 2008. DOI : 10.1080/14786430802502575.
Level set framework for the numerical modelling of primary recrystallization in polycrystalline materialsScripta Materialia. 2008. DOI : 10.1016/j.scriptamat.2008.02.016.
Modelling of primary recrystallization using digital microstructures2008.
On the influence of particle distribution and reverse loading on damage mechanisms of ductile steelsMaterials Science and Engineering A. 2008. DOI : 10.1016/j.msea.2008.05.033.
Multiaxial fatigue criterion accounting for anisotropy in forged componentsInternational Journal of Material Forming. 2008. DOI : 10.1007/s12289-008-0074-4.
3D FEM simulation of the flow forming process using lagrangian and ALE methods2007. MATERIALS PROCESSING AND DESIGN; Modeling, Simulation and Applications - NUMIFORM '07: 9th International Conference on Numerical Methods in Industrial Forming Processes, 2007. DOI : 10.1063/1.2740821.
Using Lagrangian particles to efficiently describe microstructure evolution in metal forming - Application to texture-induced mechanical anisotropyModelling and Simulation in Materials Science and Engineering. 2007. DOI : 10.1088/0965-0393/15/3/001.
Development of numerical tools for the multiscale modelling of recrystallization in metals, based on a digital material framework2007. MATERIALS PROCESSING AND DESIGN; Modeling, Simulation and Applications - NUMIFORM '07: 9th International Conference on Numerical Methods in Industrial Forming Processes, 2007. DOI : 10.1063/1.2740840.
Reducing computational cost and allowing automatic remeshing in FEM models of metal forming coupled with polycrystal plasticity2007. MATERIALS PROCESSING AND DESIGN; Modeling, Simulation and Applications - NUMIFORM '07: 9th International Conference on Numerical Methods in Industrial Forming Processes, 2007. DOI : 10.1063/1.2740842.
Coupling the thermal and mechanical fields to metallurgical evolutions within a finite element description of a forming processComputer Methods in Applied Mechanics and Engineering. 2006. DOI : 10.1016/j.cma.2004.11.034.
Influence of modelling variables on the distribution of lattice strains in a deformed polycrystal, with reference to neutron diffraction experimentsModelling and Simulation in Materials Science and Engineering. 2004. DOI : 10.1088/0965-0393/12/4/006.
Measurement of In-Grain Orientation Gradients by EBSD and Comparison with Finite Element ResultsAdvanced Engineering Materials. 2003. DOI : 10.1002/adem.200300376.
Prediction of residual stresses and springback after bending of a textured aluminium plate2003. 6th European Mechanics of Materials Conference on Non-Linear Mechanics of Anisotropic Materials EUROMECH-MECAMAT'2002, 2003.
On the mechanical behaviour of AA 7075-T6 during cyclic loadingInternational Journal of Fatigue. 2003. DOI : 10.1016/S0142-1123(02)00149-4.
Prediction of intergranular strains in cubic metals using a multisite elastic-plastic modelActa Materialia. 2002. DOI : 10.1016/S1359-6454(02)00369-5.
3D elastic-plastic finite element simulation of cold pilgering of zircaloy tubesJournal of Materials Processing Technology. 2002. DOI : 10.1016/S0924-0136(02)00379-5.
Parameter identification method for a polycrystalline viscoplastic selfconsistent model based on analytical derivatives of the direct model equationsModelling and Simulation in Materials Science and Engineering. 2000. DOI : 10.1088/0965-0393/8/2/309.
Sensitivity of α-ZY4 high-temperature deformation textures to the β-quenched precipitate structure and to recrystallization: Application to hot extrusionActa Materialia. 2000. DOI : 10.1016/S1359-6454(00)00179-8.
Nonequilibrium thermodynamics of ferroelectric domain evolutionActa Materialia. 1996. DOI : 10.1016/1359-6454(95)00425-4.
Research at LMTMhttp://lmtm.epfl.ch/research
Teaching & PhD
Materials Science and Engineering