Micromagnetic Analysis of Residual Stress Distribution in 42CrMo4 Steel after Thermal and Mechanical Surface Treatment
I. Bobrov, J. Epp, H.-W. Zoch
download PDFAbstract. In this study, residual stresses and micromagnetic parameters were analyzed with a Barkhausen-Noise-Eddy-Current-Microscope which allows the analysis of local micromagnetic properties with high resolution down to 20 µm. 42CrMo4 steel samples with varying initial microstructure and subjected to different thermal and mechanical surface treatments were investigated. In particular, shot peening and induction hardening were used to generate different distributions of microstructural and residual stress modifications. Calibration strategies were developed using standard methods as X-ray diffraction measurements and metallographic examinations. The results show that a quantitative evaluation of residual stress distribution can be possible, even in regions with high gradients when proper measurement and calibration strategy is used. With this method, large areas with thousands of measurement positions can be analyzed very fast and thus open new possibilities in the investigation of local residual stress distribution of components.
Keywords
Residual Stresses, Micromagnetic, X-Ray Diffraction, Barkhausen Noise
Published online 9/11/2018, 6 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: I. Bobrov, J. Epp, H.-W. Zoch, ‘Micromagnetic Analysis of Residual Stress Distribution in 42CrMo4 Steel after Thermal and Mechanical Surface Treatment’, Materials Research Proceedings, Vol. 6, pp 109-114, 2018
DOI: https://dx.doi.org/10.21741/9781945291890-18
The article was published as article 18 of the book Residual Stresses 2018
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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