Optimization of metallurgical variables in fracture prevention |
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Authors: | Kari Törrönen Kim Wallin Timo Saario Hannu Hänninen Rauno Rintamaa Jarl Forstén |
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Affiliation: | Metals Laboratory, Technical Research Centre of Finland, SF-02150 Espoo 15, Finland |
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Abstract: | The effect of metallurgical variables on the two most important crack growth mechanisms - stable crack growth by environmentally assisted cyclic crack growth and unstable crack growth by cleavage - in light water reactor pressure vessel steels is evaluated. The analyses are based on micromechanisms of fracture and sensitivity analysis, when applicable. Metallurgical variables considered are non-metallic inclusions and carbides as well as other parameters through their effects on yield strength and other mechanical properties. |
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