Correlative cross-sectional characterization of nitrided, carburized and shot-peened steels: synchrotron micro-X-ray diffraction analysis of stress, microstructure and phase gradients
| Autor: | Sabine C. Bodner, Christoph Schindelbacher, Tobias Ziegelwanger, Thomas Hatzenbichler, Michael Meindlhumer, Haiko Winklmayr, Norbert Schell, Martin Krobath, Bernhard Sartory, Jozef Keckes, Werner Ecker |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
lcsh:TN1-997
Materials science Shot-peening 02 engineering and technology 01 natural sciences Biomaterials Cross-section analysis Low-pressure-plasma nitriding Residual stress ddc:670 Synchrotron micro-XRD 0103 physical sciences Near-surface characterization Texture (crystalline) Case-hardening Composite material lcsh:Mining engineering. Metallurgy 010302 applied physics Austenite Metals and Alloys Peening 021001 nanoscience & nanotechnology Microstructure Surfaces Coatings and Films Martensite Ceramics and Composites Hardening (metallurgy) 0210 nano-technology Nitriding |
| Zdroj: | Bodner, S.; Meindlhumer, M.; Ziegelwanger, T.; Winklmayr, H.; Hatzenbichler, T.; Schindelbacher, C.; Sartory, B.; Krobath, M.; Ecker, W.; Schell, N.; Keckes, J.: Correlative cross-sectional characterization of nitrided, carburized and shot-peened steels: synchrotron micro-X-ray diffraction analysis of stress, microstructure and phase gradients. In: Journal of Materials Research and Technology : JMRT. Vol. 11 (2021) 1396-1410. (DOI: /10.1016/j.jmrt.2021.01.099) Journal of materials research and technology 11, 1396-1410 (2021). doi:10.1016/j.jmrt.2021.01.099 Journal of Materials Research and Technology, Vol 11, Iss, Pp 1396-1410 (2021) |
| ISSN: | 2238-7854 |
| Popis: | Journal of materials research and technology 11, 1396 - 1410 (2021). doi:10.1016/j.jmrt.2021.01.099 Mechanical properties of case modified steels depend decisively on the near-surface gradientsof residual stresses, microstructures, phases and chemical composition, which aregenerated by the empirically well-established case-hardening techniques. Currently,however, to obtain the correlation between near-surface structureeproperty gradients,applied hardening process parameters and steels’ overall performance is a very challengingtask. In this work, high-energy synchrotron cross-sectional X-ray diffraction(CSmicroXRD) using a pencil beam cross-section of 20 500 mm2 and complementaryanalytical techniques are used to characterize the surface-to-bulk gradient of (i) a plasmanitrided steel W300, (ii) a carburized case hardening steel (grade 18CrNiMo7-6) and (iii) ashot-peened high strength steel, type 300M. CSmicroXRD analysis reveals complex gradientsof martensite and austenite phases, residual stresses in both phases, crystallographictexture and the evolution of diffraction peak broadening with a spatial resolution of~20 mm. These parameters are correlated with the gradients of hardness, morphologymicrostructureand with the changes in N and C concentrations and/or retainedaustenite formation/depletion in all three model samples. Finally, the correlative microanalyticsapproach indicates the complexity of near surface structure-property relationshipsas well as the importance of innovative cross-sectional characterization, whichallows for assessing gradual near-surface physical and/or chemical changes accompanyingthermo-chemical and mechanical surface treatments Published by Elsevier, Rio de Janeiro |
| Databáze: | OpenAIRE |
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