Title

A HALL-PETCH APPROACH TO THE DYNAMIC FRACTURE BEHAVIOR OF A HEAT TREATED RPV STEEL

A HALL-PETCH APPROACH TO THE DYNAMIC FRACTURE BEHAVIOR OF A HEAT TREATED RPV STEEL

Authorship

TARPANI, JOSÉ RICARDO; FILHO, WALDEK WLADIMIR BOSE; SPINELLI, DIRCEU

TARPANI, JOSÉ RICARDO

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FILHO, WALDEK WLADIMIR BOSE

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SPINELLI, DIRCEU

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DOI

10.5151/2594-5327-C01496

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Abstract

The Charpy impact energy of the as-received and several thermally embrittled conditions of a reactor pressure vessel (RPV) steel was assessed on the basis of microstructural parameters. Similarly to quasi-static results obtained in a parallel study, it was concluded that the equivalent grain size of dual-phase annealed microstructures, and the bainite packet size of single-phase quenched and tempered microstructures are the parameters controlling the impact-absorbed energy.

The Charpy impact energy of the as-received and several thermally embrittled conditions of a reactor pressure vessel (RPV) steel was assessed on the basis of microstructural parameters. Similarly to quasi-static results obtained in a parallel study, it was concluded that the equivalent grain size of dual-phase annealed microstructures, and the bainite packet size of single-phase quenched and tempered microstructures are the parameters controlling the impact-absorbed energy.

Keywords

Charpy impact energy, Hall-Petch relationship, RPV steel

Charpy impact energy, Hall-Petch relationship, RPV steel