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Fatigue Crack Branching Behavior in Dual Phase Material
(Sandvik Materials Technology, R&D center, 811 81 SANDVIKEN)
Linköping University, Department of Management and Engineering, Engineering Materials . Linköping University, The Institute of Technology.
(Brno University of Technology, Czech Republic)
Linköping University, Department of Management and Engineering, Engineering Materials . Linköping University, The Institute of Technology.
2009 (English)Conference paper, Published paper (Other academic)
Abstract [en]

Fatigue crack branching behaviour in a dual phase steel has been investigated using an in-situ SEM/EBSD fatigue test and a conventional da/dN test. Crack branching results mainly from the extrusions and intrusions of slip bands developed in the grains. The number of crack branches formed depends strongly on the loading condition and the microstructure of the material. The in-situ observation confirms that the formation of crack branches can significantly reduce the crack propagation rate that leads to crack growth retardation in the main mode I crack path. The crack branches formed are usually not ideal. They can propagate almost transversely to the main crack direction with a mode II stress intensity factor, SIF, and a rate that is much higher than that of the main crack.

Place, publisher, year, edition, pages
2009. 1-8 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-51376OAI: oai:DiVA.org:liu-51376DiVA: diva2:274491
Conference
12th International Conference on Fracture, 12-17 July, Otawa, Canada
Available from: 2010-02-12 Created: 2009-10-29 Last updated: 2010-02-12Bibliographically approved

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Fatigue Crack Branching Behavior in Dual Phase Material(450 kB)664 downloads
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Peng, Ru LinJohansson, Sten

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf