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Samenvatting
The evolution of deformation from plasticity to localization to damage is investigated in ferritic-pearlitic steel through nanometer-resolution microstructure-correlated SEM-DIC (µ-DIC) strain mapping, enabled through highly accurate microstructure-to-strain alignment. We reveal the key plasticity mechanisms in ferrite and pearlite as well as their evolution into localization and damage and their relation to the microstructural arrangement. Notably, two contrasting mechanisms were identified that control whether damage initiation in pearlite occurs and, through connection of localization hotspots in ferrite grains, potentially results in macroscale fracture: (i) cracking of pearlite bridges with relatively clean lamellar structure by brittle fracture of cementite lamellae due to build-up of strain concentrations in nearby ferrite, versus (ii) large plasticity without damage in pearlite bridges with a more “open”, chaotic pearlite morphology, which enables plastic percolation paths in the interlamellar ferrite channels. Based on these insights, recommendations for damage resistant ferritic-pearlitic steels are proposed.
Originele taal-2 | Engels |
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Artikelnummer | 114327 |
Aantal pagina's | 6 |
Tijdschrift | Scripta Materialia |
Volume | 208 |
DOI's | |
Status | Gepubliceerd - 1 feb. 2022 |
Bibliografische nota
Publisher Copyright:© 2021
Financiering
The authors thank Marc van Maris for experimental support. This research was carried out under project number S17012b in the framework of the Partnership Program of the Materials innovation institute M2i ( www.m2i.nl ) and the Technology Foundation TTW ( www.stw.nl ), which is part of the Netherlands Organization for Scientific Research ( http://www.nwo.nl ).
Vingerafdruk
Duik in de onderzoeksthema's van 'Plasticity, localization, and damage in ferritic-pearlitic steel studied by nanoscale digital image correlation'. Samen vormen ze een unieke vingerafdruk.Projecten
- 1 Afgelopen
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Unraveling the effect of microstructure statistics on failure of multiphase steels NWO-TTW/HTM 16348
Hoefnagels, J. P. M. (Project Manager), van Maris, M. P. F. H. L. (Projectmedewerker), Vermeij, T. (Projectmedewerker) & Wijnen, J. (Projectmedewerker)
1/01/18 → 31/12/22
Project: Onderzoek direct
Impact
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Theme 1: Damage and failure in advanced engineering materials
Hoefnagels, J. P. M. (Onderzoeker) & Langelaan, A. (Administratieve ondersteuning)
Impact: Research Topic/Theme (at group level)
Uitrusting
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Multiscale Lab
Hoefnagels, J. P. M. (Manager)
Mechanical EngineeringUitrusting/faciliteit: Onderzoekslaboratorium
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A Nanomechanical Testing Framework Yielding Front&Rear-Sided, High-Resolution, Microstructure-Correlated SEM-DIC Strain Fields
Vermeij, T., Verstijnen, J. A. C., Ramirez y Cantador, T. J. J., Blaysat, B., Neggers, J. & Hoefnagels, J. P. M. (Corresponding author), nov. 2022, In: Experimental Mechanics. 62, 9, blz. 1625-1646 22 blz.Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review
Open AccessBestand16 Citaten (Scopus)118 Downloads (Pure) -
Can we measure plastic strains at the nanoscale?
Vermeij, T. & Hoefnagels, J. P. M., dec. 2019.Onderzoeksoutput: Bijdrage aan congres › Poster
Open AccessBestand -
One‐step deposition of nano‐to‐micron‐scalable, high‐quality digital image correlation patterns for high‐strain in‐situ multi‐microscopy testing
Hoefnagels, J. (Corresponding author), Maris, M. V. & Vermeij, T., 1 dec. 2019, In: Strain. 55, 6, 13 blz., e12330.Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review
Open AccessBestand48 Citaten (Scopus)252 Downloads (Pure)