ISSN 2594-5327
57º Congresso anual — Vol. 57 , num. 1 (2002)
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The elastic-plastic fracture toughness and crack extension behavior under quasi-static loading regime of the as-received and several thermally embrittled states of a reactor pressure vessel (RPV) steel were assessed on the basis of microstrutural parameters. Through a simple rule of mixture typically applied for composite materials, it was found that the equivalent grain size of dual-phase microstructures obtained by annealing is the parameter controlling the fracture toughness properties. It was concluded that J-fracture mechanics criteria correlate to the equivalent grain size by means of a Hall-Petch type relationship.
The elastic-plastic fracture toughness and crack extension behavior under quasi-static loading regime of the as-received and several thermally embrittled states of a reactor pressure vessel (RPV) steel were assessed on the basis of microstrutural parameters. Through a simple rule of mixture typically applied for composite materials, it was found that the equivalent grain size of dual-phase microstructures obtained by annealing is the parameter controlling the fracture toughness properties. It was concluded that J-fracture mechanics criteria correlate to the equivalent grain size by means of a Hall-Petch type relationship.
Palavras-chave
Hall-Petch relationship, J-fracture toughness, RPV steel
Hall-Petch relationship, J-fracture toughness, RPV steel
Como citar
Tarpani, José Ricardo; Filho, Waldek Wladimir Bose; Spinelli, Dirceu.
A Hall-Petch Approach to the Fracture Behavior of Annealed Microstructures of a RPV Steel,
p. 707-716.
In: 57º Congresso anual,
São Paulo, Brasil,
2002.
ISSN: 2594-5327, DOI 10.5151/2594-5327-C01400
