Surface Morphology and Its Influence on Cyclic Deformation Behavior of High-Mn TWIP Steel
In this study, the dependence of the cyclic deformation behavior on the surface morphology of metastable austenitic HSD® 600 TWinning Induced Plasticity (TWIP) steel was investigated. This steel—with the alloying concept Mn-Al-Si—shows a fully austenitic microstructure wi...
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MDPI AG
2018-10-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/8/10/832 |
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| author | Matthias W. Klein Marek Smaga Tilmann Beck |
| author_facet | Matthias W. Klein Marek Smaga Tilmann Beck |
| author_sort | Matthias W. Klein |
| collection | DOAJ |
| description | In this study, the dependence of the cyclic deformation behavior on the surface morphology of metastable austenitic HSD® 600 TWinning Induced Plasticity (TWIP) steel was investigated. This steel—with the alloying concept Mn-Al-Si—shows a fully austenitic microstructure with deformation-induced twinning at ambient temperature. Four different surface morphologies were analyzed: as-received with a so-called rolling skin, after up milling, after down milling, and a reference morphology achieved by polishing. The morphologies were characterized by X-Ray Diffraction (XRD), Focused Ion Beam (FIB), Scanning Electron Microscopy (SEM) as well as confocal microscopy methods and show significant differences in initial residual stresses, phase fractions, topographies and microstructures. For specimens with all variants of the morphologies, fatigue tests were performed in the Low Cycle Fatigue (LCF) and High Cycle Fatigue (HCF) regime to characterize the cyclic deformation behavior and fatigue life. Moreover, this study focused on the frequency-dependent self-heating of the specimens caused by cyclic plasticity in the HCF regime. The results show that both surface morphology and specimen temperature have a significant influence on the cyclic deformation behavior of HSD® 600 TWIP steel in the HCF regime. |
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| language | English |
| last_indexed | 2024-12-14T03:25:20Z |
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| spelling | doaj.art-def45f6aa1c34e3db27251370dfbf11a2022-12-21T23:18:54ZengMDPI AGMetals2075-47012018-10-0181083210.3390/met8100832met8100832Surface Morphology and Its Influence on Cyclic Deformation Behavior of High-Mn TWIP SteelMatthias W. Klein0Marek Smaga1Tilmann Beck2Institute of Materials Science and Engineering, University of Kaiserslautern, 67663 Kaiserslautern, GermanyInstitute of Materials Science and Engineering, University of Kaiserslautern, 67663 Kaiserslautern, GermanyInstitute of Materials Science and Engineering, University of Kaiserslautern, 67663 Kaiserslautern, GermanyIn this study, the dependence of the cyclic deformation behavior on the surface morphology of metastable austenitic HSD® 600 TWinning Induced Plasticity (TWIP) steel was investigated. This steel—with the alloying concept Mn-Al-Si—shows a fully austenitic microstructure with deformation-induced twinning at ambient temperature. Four different surface morphologies were analyzed: as-received with a so-called rolling skin, after up milling, after down milling, and a reference morphology achieved by polishing. The morphologies were characterized by X-Ray Diffraction (XRD), Focused Ion Beam (FIB), Scanning Electron Microscopy (SEM) as well as confocal microscopy methods and show significant differences in initial residual stresses, phase fractions, topographies and microstructures. For specimens with all variants of the morphologies, fatigue tests were performed in the Low Cycle Fatigue (LCF) and High Cycle Fatigue (HCF) regime to characterize the cyclic deformation behavior and fatigue life. Moreover, this study focused on the frequency-dependent self-heating of the specimens caused by cyclic plasticity in the HCF regime. The results show that both surface morphology and specimen temperature have a significant influence on the cyclic deformation behavior of HSD® 600 TWIP steel in the HCF regime.http://www.mdpi.com/2075-4701/8/10/832TWIP steelsurface morphologyFIBXRDSEMfatiguespecimen self-heatingLCFHCF |
| spellingShingle | Matthias W. Klein Marek Smaga Tilmann Beck Surface Morphology and Its Influence on Cyclic Deformation Behavior of High-Mn TWIP Steel Metals TWIP steel surface morphology FIB XRD SEM fatigue specimen self-heating LCF HCF |
| title | Surface Morphology and Its Influence on Cyclic Deformation Behavior of High-Mn TWIP Steel |
| title_full | Surface Morphology and Its Influence on Cyclic Deformation Behavior of High-Mn TWIP Steel |
| title_fullStr | Surface Morphology and Its Influence on Cyclic Deformation Behavior of High-Mn TWIP Steel |
| title_full_unstemmed | Surface Morphology and Its Influence on Cyclic Deformation Behavior of High-Mn TWIP Steel |
| title_short | Surface Morphology and Its Influence on Cyclic Deformation Behavior of High-Mn TWIP Steel |
| title_sort | surface morphology and its influence on cyclic deformation behavior of high mn twip steel |
| topic | TWIP steel surface morphology FIB XRD SEM fatigue specimen self-heating LCF HCF |
| url | http://www.mdpi.com/2075-4701/8/10/832 |
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