SEDL / STP / STP945-EB / STP23231S

Cleavage Toughness Variability and Inclusion Size Distribution of a Weld Metal

Tyson, WR
Head, Engineering Physics Section, Physical Metallurgy Research Laboratories, Canada Centre for Mineral and Energy Technology, Ottawa,

Marandet, B
Head, Institut de Recherches de la Sidérurgie Française, St. Germain en Laye,

Pages: 14    Published: Jan 1988

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Abstract

The cleavage toughness of a carbon-manganese electroslag weld metal has been measured in the transition region and related to measurements of the inclusion size distribution. Results were interpreted using the “weakest link” theory, based on the hypothesis that fracture occurs when the local stresses acting on a microcracked inclusion become large enough to propagate the microcrack.