SEDL / STP / STP1058-EB / STP24101S

Fracture Toughness of Manual Metal-Arc and Submerged-Arc Welded Joints in Normalized Carbon-Manganese Steels

Burget, W
Research engineer, Fraunhofer-Institut für Werkstoffmechanik, Freiburg,

Blaue, JG
Head of section, Materials and Component Assessment, Fraunhofer-Institut für Werkstoffmechanik, Freiburg,

Pages: 28    Published: Jan 1990

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Abstract

This paper shows that, in the temperature transition regime, scatter of weld metal and heat-affected zone toughness values is related to material heterogeneity in the welded joints. Results were obtained from impact testing of V-notched and fatigue-cracked Charpy specimens as well as from static fracture toughness tests on small-scale and full-thickness specimens. Besides material heterogeneity, mechanical heterogeneity is emphasized as having a significant influence on the fracture performance of heat-affected zone specimens.