Projects per year
Abstract
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.
Original language | English |
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Article number | 114327 |
Number of pages | 6 |
Journal | Scripta Materialia |
Volume | 208 |
DOIs | |
Publication status | Published - 1 Feb 2022 |
Bibliographical note
Funding Information: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 ).
Keywords
- Damage
- Ferritic-pearlitic steel
- Localization
- Nanoscale digital image correlation
- Plasticity
Fingerprint
Dive into the research topics of 'Plasticity, localization, and damage in ferritic-pearlitic steel studied by nanoscale digital image correlation'. Together they form a unique fingerprint.Projects
- 1 Finished
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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. (Project member), Vermeij, T. (Project member) & Wijnen, J. (Project member)
1/01/18 → 31/12/22
Project: Research direct
Research areas
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Theme 1: Damage and failure in advanced engineering materials
Hoefnagels, J. P. M. (Researcher) & (Administrative support)
Impact: Research Topic/Theme (at group level)
Equipment
Research output
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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, p. 1625-1646 22 p.Research output: Contribution to journal › Article › Academic › peer-review
Open AccessFile14 Citations (Scopus)143 Downloads (Pure) -
Can we measure plastic strains at the nanoscale?
Vermeij, T. & Hoefnagels, J. P. M., Dec 2019.Research output: Contribution to conference › Poster
Open AccessFile -
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 p., e12330.Research output: Contribution to journal › Article › Academic › peer-review
Open AccessFile44 Citations (Scopus)268 Downloads (Pure)