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 several thermally embrittled states of a reactor pressure vessel (RPV) steel were assessed on the basis of microstructural parameters. It was verified that the bainite packet size is the fracture properties controlling parameter of single-phase quenched and tempered microstructures. Results were found in close agreement to those obtained in a parallel study with dual-phase annealed microstructures derived from the same low alloy steel. Similarly, it was concluded that a Hall-Petch type relationship correlates the J-fracture mechanics criteria to the grain size.
The elastic-plastic fracture toughness and crack extension behavior under quasi-static loading regime of several thermally embrittled states of a reactor pressure vessel (RPV) steel were assessed on the basis of microstructural parameters. It was verified that the bainite packet size is the fracture properties controlling parameter of single-phase quenched and tempered microstructures. Results were found in close agreement to those obtained in a parallel study with dual-phase annealed microstructures derived from the same low alloy steel. Similarly, it was concluded that a Hall-Petch type relationship correlates the J-fracture mechanics criteria to the grain size.
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 QUENCHED AND TEMPERED MICROSTRUCTURES OF A RPV STEEL,
p. 1590-1599.
In: 57º Congresso anual,
São Paulo, Brasil,
2002.
ISSN: 2594-5327, DOI 10.5151/2594-5327-C01495
