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  4. Subsurface microstructural evolution during scratch testing on Bcc Iron
 
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2021
Journal Article
Titel

Subsurface microstructural evolution during scratch testing on Bcc Iron

Abstract
Subsurface microstructures influence the friction and wear behavior of metallic tribological systems, among other factors. To gain a basic understanding of the microstructural changes occurring during sliding processes, face-centered cubic model systems, for example a copper system with a sapphire sphere sliding against it, were previously characterized. Such systems showed the evolution of the dislocation self-organization phenomenon called the dislocation trace line. To test the occurrence of this dislocation arrangement in bcc metals, in this study a ruby ball was slid against electropolished bcc iron under an increasing normal load. The wear track topography and subsurface microstructure were characterized using white light interferometry and scanning transmission electron microscopy. The analysis suggested that at least for bcc iron, the evolution of a dislocation trace line is connected with the onset of pronounced plastic deformation.
Author(s)
Linsler, D.
Fraunhofer-Institut für Werkstoffmechanik IWM
Ruebeling, F.
Karlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM); KIT IAM-CMS MicroTribology Center (mTC)
Greiner, C.
Karlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM); KIT IAM-CMS MicroTribology Center (mTC)
Zeitschrift
Metals
Project(s)
TriboKey
Funder
European Research Council ERC
Thumbnail Image
DOI
10.3390/met11081258
Externer Link
Externer Link
Language
English
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Fraunhofer-Institut für Werkstoffmechanik IWM
Tags
  • subsurface plastic de...

  • initial stages of wea...

  • ploughing

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