SEDL / STP / STP631-EB / STP35557S

Prediction of Fracture Toughness K^Ic of 2¼Cr-1Mo Pressure Steels from Charpy V-Notch Test Results

Iwadate, T
Research engineers and general manager, Research Laboratory, Muroran Plant, The Japan Steel Works, Muroran,

Karaushi, T
Research engineers and general manager, Research Laboratory, Muroran Plant, The Japan Steel Works, Muroran,

Watanabe, J
Research engineers and general manager, Research Laboratory, Muroran Plant, The Japan Steel Works, Muroran,

Pages: 14    Published: Jan 1977

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Abstract

The validity of the Barsom, Rolfe, and Novak correlation between Charpy energy, yield strength, and K^Ic in the upper-shelf region has been confirmed for 2¼Cr-1Mo pressure vessel steels. The relationship between the excess temperature and K^Ic/K^{Ic-upper shelf} has also been developed. Based on these relationships, K^Ic transition curves may be predicted from Charpy V-notch test results of 2¼Cr-1Mo pressure vessel steels.