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Fatigue Crack Branc...
Fatigue Crack Branching Behavior in Dual Phase Material
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- Chai, Guocai (författare)
- Sandvik Materials Technology, R&D center, 811 81 SANDVIKEN
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- Peng, Ru Lin (författare)
- Linköpings universitet,Konstruktionsmaterial,Tekniska högskolan
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- Slamecka, Karel (författare)
- Brno University of Technology, Czech Republic
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- Johansson, Sten, 1948- (författare)
- Linköpings universitet,Konstruktionsmaterial,Tekniska högskolan
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(creator_code:org_t)
- 2009
- 2009
- Engelska.
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- 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.
Nyckelord
- TECHNOLOGY
- TEKNIKVETENSKAP
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