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THE BRITTLE FRACTURE OF 475°C EMBRITTLED CAST DUPLEX STAINLESS STEEL
Author(s) -
Marrow T. J.,
Bury N.
Publication year - 1997
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1997.tb00288.x
Subject(s) - materials science , metallurgy , duplex (building) , brittleness , indentation hardness , ferrite (magnet) , ultimate tensile strength , brittle fracture , cleavage (geology) , composite material , fracture (geology) , microstructure , dna , genetics , biology
— The fracture behaviour of cast duplex stainless steels, heat treated to different ferrite contents and hardness was investigated using tensile and notched bend tests. The purpose was to identify the microstructural features which controlled the ductile‐to‐brittle fracture transition of 475°C embrittled duplex stainless steel. The results indicate that twin nucleated cleavage has a tensile stress fracture criteria and the brittle‐to‐ductile transition temperature depends on ferrite microhardness, ferrite grain size and constraint.