Journal article
Oxidation behavior of interstitial free steel: The defining role of substrate crystallographic texture
Acta materialia, v 190
15 May 2020
Abstract
The oxidation kinetics of interstitial free (IF) steel were shown to differ remarkably, by more than one order of magnitude, with the crystallographic texture of the metallic substrate. More specifically, γ-fiber or ND|| grains oxidized preferentially and provided epitaxial or pseudo-epitaxial growth of the corresponding oxide grains. Below 843K, the initial magnetite (Fe3O4) grains had a ∼45° epitaxial orientation relationship with all the substrate ferrite grains. Specimens oxidized at temperature > 843K, on the other hand, had a pseudo-epitaxy: ND|| metallic-substrate grains generated ND|| pro-eutectoid magnetite. In both cases, the oxide grains growing from ND|| ferrite had more dislocations and higher tensile residual stresses. They also had more magnetite and less hematite. It was proposed that the oxide phase growing from ND|| ferrite grains, with higher dislocation content, has faster ionic diffusion. Faster diffusion in the magnetite also appeared to reduce the protective (lower ionic diffusion) outer hematite layer. A combination of these two generated thicker oxide layers on the ND|| ferrite grains.
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Details
- Title
- Oxidation behavior of interstitial free steel: The defining role of substrate crystallographic texture
- Creators
- H.K. Mehtani - Indian Institute of Technology BombayM.I. Khan - Indian Institute of Technology BombayA. Durgaprasad - Indian Institute of Technology BombayS.K. Deb - Indian Institute of Technology BombayS. Parida - Indian Institute of Technology BombayM.J.N.V. Prasad - Indian Institute of Technology BombayDavid Fullwood - Brigham Young UniversityR.D. Doherty - Drexel UniversityI. Samajdar - Indian Institute of Technology Bombay
- Publication Details
- Acta materialia, v 190
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- [Retired Faculty]
- Web of Science ID
- WOS:000527831400005
- Scopus ID
- 2-s2.0-85082553296
- Other Identifier
- 991019167758504721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Metallurgy & Metallurgical Engineering