Investigation of Deformation Mechanisms in an Austenitic Mn-Steel by means of Scanning Electron Microscopy and Electron Backscatter Diffraction
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C. Hahn
Abstract
The aim of this work was to investigate the deformation mechanism in a highly alloyed austenitic Mn-steel, because these steels can deform by twinning and/or slip. Deformation by localized twinning or slip leads to formation of deformation structures on the surface, which are either bundles of deformation twins or slip bands. Such deformation structures around a standard Vickers hardness indent were investigated by means of scanning electron microscopy and electron backscatter diffraction to study the active deformation mechanism. Energy dispersive x-ray spectroscopy was conducted in order to study influences of segregation on the deformation.
The main result of the investigations is that the deformation structures are formed by dislocation slip in the (101)-orientation and that an influence of segregations in the alloy composition on the deformation mechanism was not observed.
Abstract
Im Rahmen dieser Arbeit soll der Verformungsmechanismus in einem höher legierten austenitischen Mn-Stahl untersucht werden, da es in diesen Stählen sowohl durch Zwillingsbildung als auch durch Gleiten zu Verformungen kommen kann. Eine durch lokale Zwillingsbildung oder Gleiten verursachte Verformung führt zur Ausbildung von Verformungsstrukturen an der Oberfläche, bei denen es sich entweder um Bündel von Verformungszwillingen oder Gleitbänder handelt. Derartige, um einen standardmäßigen Vickers-Härteeindruck auftretende Verformungsstrukturen wurden mittels Rasterelektronenmikroskopie und Elektronenrückstreubeugung betrachtet, um so den aktiven Verformungsmechanismus zu untersuchen. Zur Untersuchung der Auswirkungen von Seigerungen auf die Verformung wurde mit energiedispersiver Röntgenspektroskopie gearbeitet.
Hauptergebnisse der Untersuchungen waren die durch Versetzungsgleiten in der (101)-Ebene verursachte Bildung der Verformungsstrukturen und die Tatsache, dass die Seigerungen in der Legierungszusammensetzung offensichtlich keinen Einfluss auf den Verformungsmechanismus haben.
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© 2019, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Editorial
- Editorial
- Technical Contributions/Fachbeiträge
- The Effect of Loading during Martensitic Transformation of a Maraging Steel after Prior Austenite Grain Size Refinement by Thermal Cycling
- Sample Preparation Challenges with Highly Metastable Ferritic-Austenitic Stainless Steels
- Investigation of Deformation Mechanisms in an Austenitic Mn-Steel by means of Scanning Electron Microscopy and Electron Backscatter Diffraction
- Metallurgical Failure Analysis of Cracked First Stage Vane of Heavy-Duty Industrial Gas Turbine Engine for Power Generation
- Meeting Diary/Veranstaltungskalender
- Meeting Diary
Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Editorial
- Editorial
- Technical Contributions/Fachbeiträge
- The Effect of Loading during Martensitic Transformation of a Maraging Steel after Prior Austenite Grain Size Refinement by Thermal Cycling
- Sample Preparation Challenges with Highly Metastable Ferritic-Austenitic Stainless Steels
- Investigation of Deformation Mechanisms in an Austenitic Mn-Steel by means of Scanning Electron Microscopy and Electron Backscatter Diffraction
- Metallurgical Failure Analysis of Cracked First Stage Vane of Heavy-Duty Industrial Gas Turbine Engine for Power Generation
- Meeting Diary/Veranstaltungskalender
- Meeting Diary
