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Hoefnagels, Jpm Johan
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Topics
Publications (71/71 displayed)
- 2024An integrated experimental-numerical study of martensite/ferrite interface damage initiation in dual-phase steelscitations
- 2024A quasi-2D integrated experimental–numerical approach to high-fidelity mechanical analysis of metallic microstructurescitations
- 2024Harvesting deformation modes for micromorphic homogenization from experiments on mechanical metamaterialscitations
- 2024Influence of the printing strategy on the microstructure and mechanical properties of thick-walled wire arc additive manufactured stainless steelscitations
- 2023On the anisotropy of thick-walled wire arc additively manufactured stainless steel partscitations
- 2023Micro-mechanical deformation behavior of heat-treated laser powder bed fusion processed Ti-6Al-4Vcitations
- 2023Integrated digital image correlation for micro-mechanical parameter identification in multiscale experimentscitations
- 2022Plasticity, localization, and damage in ferritic-pearlitic steel studied by nanoscale digital image correlationcitations
- 2022A Nanomechanical Testing Framework Yielding Front&Rear-Sided, High-Resolution, Microstructure-Correlated SEM-DIC Strain Fieldscitations
- 2022Influence of porosity and blistering on the thermal fatigue behavior of tungstencitations
- 2022A multi-scale framework to predict damage initiation at martensite/ferrite interfacecitations
- 2022Microstructural modeling and measurements of anisotropic plasticity in large scale additively manufactured 316L stainless steelcitations
- 2022A modular framework to obtain representative microstructural cells of additively manufactured partscitations
- 2022Accurate Strain Field Measurement During Strip Rolling by Exploiting Recurring Material Motion with Time-Integrated Digital Image Correlationcitations
- 2022Effect of asymmetric material entrance on lubrication in cold rollingcitations
- 2021Revisiting the martensite/ferrite interface damage initiation mechanism: The key role of substructure boundary slidingcitations
- 2021A discrete slip plane model for simulating heterogeneous plastic deformation in single crystalscitations
- 2021Recrystallization-mediated crack initiation in tungsten under simultaneous high-flux hydrogen plasma loads and high-cycle transient heatingcitations
- 2021In depths of paper degradation
- 2020An in-situ, micro-mechanical setup with accurate, tri-axial, piezoelectric force sensing and positioningcitations
- 2020Fracture behavior of tungsten-based composites exposed to steady-state/transient hydrogen plasmacitations
- 2020Fracture behavior of tungsten-based composites exposed to steady-state/transient hydrogen plasma
- 2020Anisotropic hygro-expansion in hydrogel fibers owing to uniting 3D electrowriting and supramolecular polymer assemblycitations
- 2020Micron-scale experimental-numerical characterization of metal-polymer interface delamination in stretchable electronics interconnectscitations
- 2020Laser-induced toughening inhibits cut-edge failure in multi-phase steelcitations
- 2019Mixed-mode cohesive zone parameters from integrated digital image correlation on micrographs onlycitations
- 2019Lath martensite plasticity enabled by apparent sliding of substructure boundariescitations
- 2018Anomalous precipitation hardening in Al-(1 wt%)Cu thin films
- 2018A bulge test based methodology for characterizing ultra-thin buckled membranescitations
- 2018Martensite crystallography and chemistry in dual phase and fully martensitic steelscitations
- 2018Anomalous precipitation hardening in Al-(1 wt%)Cu thin filmscitations
- 2018Advances in delamination modeling of metal/polymer systems: continuum aspectscitations
- 2018Crystal plasticity parameter identification by integrated DIC on microscopic topographies
- 2018Ferrite slip system activation investigated by uniaxial micro-tensile tests and simulationscitations
- 2017Boundary mechanics in lath martensite, studied by uni-axial micro-tensile testscitations
- 2017On the underlying micromechanisms in time-dependent anelasticity in Al-(1 wt%)Cu thin filmscitations
- 2017Unraveling the apparent ductility of lath martensite
- 2016Microstructural study of the mechanical response of compacted graphite ironcitations
- 2016A statistical/computational/experimental approach to study the microstructural morphology of damage
- 2016A statistical/computational/experimental approach to study the microstructural morphology of damage
- 2016Crystal plasticity parameter identification with 3D measurements and Integrated Digital Image Correlationcitations
- 2016Systematic and objective identification of the microstructure around damage directly from imagescitations
- 2015Retardation of plastic instability via damage-enabled micro-strain delocalizationcitations
- 2014Strain localization and damage in dual phase steels investigated by coupled in-situ deformation experiments and crystal plasticity simulationscitations
- 2014Irreversible mixed mode interface delamination using a combined damage-plasticity cohesive zone enabling unloading
- 2014Irreversible mixed mode interface delamination using a combined damage-plasticity cohesive zone enabling unloadingcitations
- 2014Characterization of time-dependent anelastic microbeam bending mechanicscitations
- 2014Anelasticity in Al-alloy thin films: a micro-mechanical analysis
- 2013Integrated global digital image correlation for interface delamination characterization
- 2013Microstructure based overview and modeling of Al-Cu alloyed MEMS
- 2012From damage to fracture in dual-phase steels：a focused experimental-numerical approach
- 2012An in situ experimental-numerical approach for characterization and prediction of interface delamination : application to CuLF-MCE systemscitations
- 2012An in situ experimental-numerical approach for characterization and prediction of interface delamination : application to CuLF-MCE systems
- 2012Multi-axial deformation setup for microscopic testing of sheet metal to fracturecitations
- 2012A micropillar compression methodology for ductile damage quantificationcitations
- 2012Micromechanical characterization of ductile damage in DP steel
- 2010Numerical and experimental analysis of stretching induced interconnect delamination for stretchable electronic circuits
- 2010Numerical and experimental analysis of stretching induced interconnect delamination for stretchable electronic circuits
- 2010Indentation-based damage quantification revisitedcitations
- 2010Electron micrographic digital image correlation : method optimization and microstructural banding case studycitations
- 2009Experimental analysis of strain path dependent ductile damage mechanics and forming limits
- 2009Experimental analysis of strain path dependent ductile damage mechanics and forming limitscitations
- 2009A critical assessment of indentation-based ductile damage quantificationcitations
- 2009On a proper account of first- and second-order size effects in crystal plasticitycitations
- 2009Direct damage quantification techniques – a comparative study
- 2008In-plane biaxial loading of sheet metal until fracture
- 2008Experimental-numerical analysis of the indentation-based damage characterization methodologycitations
- 2008Processing induced size effects in plastic yielding upon miniaturisationcitations
- 2008Brittle fracture-based experimental methodology for microstructure analysiscitations
- 2005A novel diagnostic approach for studying silicon thin film growth
- 2000Low temperature inorganic chemical vapor deposition of Ti-Si-N diffusion barrier liners for gigascale copper interconnect applicationscitations
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article
Martensite crystallography and chemistry in dual phase and fully martensitic steels
Abstract
Lath martensite is important in industry because it is the key strengthening component in many advanced high strength steels. The study of crystallography and chemistry of lath martensite is extensive in the literature, however, mostly based on fully martensitic steels. In this work, lath martensite in dual phase steels is investigated with a focus on the substructure identification of the martensite islands and microstructural bands using electron backscattered diffraction, and on the influence of the accompanied tempering process during industrial coating process on the distribution of alloying elements using atom probe tomography. Unlike findings for the fully martensitic steels, no martensite islands with all 24 Kurdjumov-Sachs variants have been observed. Almost all martensite islands contain only one main packet with all six variants and minor variants from the remaining three packets of the same prior austenite grain. Similarly, the martensite bands are typically composed of connected domains originating from prior austenite grains, each containing one main packets (mostly with all variants) and few separate variants. The effect of tempering at ~450 °C (due to the industrial zinc coating process) has also been investigated. The results show a strong carbon partitioning to lath boundaries and Cottrell atmospheres at dislocation core regions due to the thermal process of coating. In contrast, auto-tempering contributes to the carbon redistribution only in a limited manner. The substitutional elements are all homogenously distributed. The phase transformation process has two effects on the material: mechanically, the earlier-formed laths are larger and softer and therefore more ductile (as revealed by nanoindentation); chemically, due to the higher dislocation density inside the later-formed laths, which are generally smaller, carbon Cottrell atmospheres are predominantly observed.