Crystallographic Effects on Residual Relative Elastic Strain Heterogeneity Induced by Micro-Indentation in Non-Oriented Electrical Steels.

Oluwasogo Adegboyega, Nicolas Brodusch, Lise Guichaoua, Stéphanie Bessette, Richard R Chromik, Raynald Gauvin

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Article in Materials (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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Crystallographic Effects on Residual Relative Elastic Strain Heterogeneity Induced by Micro-Indentation in Non-Oriented Electrical Steels.Materials (Basel, Switzerland) · 2026
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6 authors.

Oluwasogo AdegboyegaDepartment of Mining and Materials Engineering, McGill University, M.H. Wong Building, 3610 University Street, Montreal, QC H3A 0C5, Canada.ORCID 0009-0003-9770-3270

Nicolas BroduschDepartment of Mining and Materials Engineering, McGill University, M.H. Wong Building, 3610 University Street, Montreal, QC H3A 0C5, Canada.ORCID 0000-0003-3181-3963

Lise GuichaouaDepartment of Mining and Materials Engineering, McGill University, M.H. Wong Building, 3610 University Street, Montreal, QC H3A 0C5, Canada.ORCID 0009-0002-3890-7524

Stéphanie BessetteDepartment of Mining and Materials Engineering, McGill University, M.H. Wong Building, 3610 University Street, Montreal, QC H3A 0C5, Canada.

Richard R ChromikDepartment of Mining and Materials Engineering, McGill University, M.H. Wong Building, 3610 University Street, Montreal, QC H3A 0C5, Canada.ORCID 0000-0003-4052-1858

Raynald GauvinDepartment of Mining and Materials Engineering, McGill University, M.H. Wong Building, 3610 University Street, Montreal, QC H3A 0C5, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Localized mechanical loading induces complex elastic-plastic interactions in anisotropic crystalline materials. However, quantitative orientation-resolved characterization of residual relative elastic strain heterogeneity remains limited. In this study, high-resolution electron backscatter diffraction was used to map residual in-plane relative elastic strain distributions beneath micro-indents in two annealed body-centered cubic ferritic non-oriented electrical steels, B35AV1900 and 35WW300. Grains oriented near (001), (101), and (111) were analyzed to evaluate the crystallographic effects on residual strain accommodation. Frequency distributions of the in-plane residual relative elastic strain components were constructed, and full width at half maximum values were extracted to quantify strain heterogeneity. The results revealed a pronounced orientation dependence. Near-(001) grains exhibited greater indentation depths and more widely distributed post-indentation deformation features. By contrast, near-(111) grains showed broader residual in-plane relative elastic strain distributions in both alloys. These results indicate that residual strain heterogeneity after unloading is influenced not only by indentation depth but also by crystallographic constraint and orientation-dependent strain redistribution. This study establishes a quantitative orientation-resolved framework for characterizing residual relative elastic strain heterogeneity beneath localized loading. It also provides a basis for linking crystallographic anisotropy, localized deformation, and residual strain redistribution in ferritic electrical steels.

Indexed as

crystallographic orientationelastic strainHR-EBSDmicro-indentation

Identifiers

PMID42195695

DOI10.3390/ma19102056

PMCPMC13208754

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