Ferritic–Martensitic Structures and Their Effect on HAZ Notch Toughness

Author： McGrath J. T.   Laufer E. E.   Gordine J.  

Publisher： Maney Publishing

ISSN： 0008-4433

Source： Canadian Metallurgical Quarterly, Vol.19, Iss.4, 1980-10, pp. : 395-398

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Abstract

The presence of a ferrite-martensite mixed microstructure in the HAZ ofa grade 65 line pipe steel, has been identified. The embrittling effect of this structure on the notch toughness of the HAZ is discussed.RésuméLa présence d'une microstructure composée d'un mélange ferrite-martensite dans la zone affectee par la chaleur d'un acier it pipeline grade 65, a été identifiée. L'effet de fragilisation de cette structure sur la sensibilité à l'entraille de la zone affectée est examiné.

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