Prediction of fracture toughness for a pressure vessel steel with mixed bainite-ferritic microstructure

This paper presents a model for fracture toughness prediction of a 10MnNi2Mo steel having mixed bainite-ferritic microstructure as used for the pressure components of a nuclear reactor primary circuit. In addition to cleavage microcrack nucleation in carbide particles, consideration is given to a di...

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Bibliographic Details
Published in:The International journal of pressure vessels and piping 1986, Vol.23 (1), p.47-60
Main Authors: Strnadel, B., Mazancová, E., Havel, S., Mazanec, K.
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fission nuclear power plants
Installations for energy generation and conversion: thermal and electrical energy
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Summary:This paper presents a model for fracture toughness prediction of a 10MnNi2Mo steel having mixed bainite-ferritic microstructure as used for the pressure components of a nuclear reactor primary circuit. In addition to cleavage microcrack nucleation in carbide particles, consideration is given to a dislocation mechanism for nucleation of microcracks in ferrite as proposed by Cottrell. The presented model showed good agreement between the predicted and experimentally determined values of stress intensity factor.
ISSN:0308-0161
1879-3541
DOI:10.1016/0308-0161(86)90052-9