SEDL / STP / STP1210-EB / STP12759S

Application of the Rising Displacement Test to SCC Investigations

Dietzel, W
Senior research engineer and head of Institute of Materials Research, GKSS-Forschungszentrum Geesthacht GmbH., Geesthacht,

Schwalbe, K-H
Senior research engineer and head of Institute of Materials Research, GKSS-Forschungszentrum Geesthacht GmbH., Geesthacht,

Pages: 15    Published: Jan 1993

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Abstract

The stress corrosion cracking (SCC) behavior of two metallic materials in sodium chloride containing solutions has been investigated using precracked specimens and a rising displacement test procedure. The tests were evaluated according to linear elastic fracture mechanics, i.e., in terms of K^Iscc and da/dt versus K, and, in addition, by applying elastic-plastic fracture parameters such as the J-integral and the crack tip opening displacement (CTOD). From the results of these tests conclusions are drawn concerning an accelerated SCC test procedure that might be based on a combination of the rising displacement test on pre-cracked specimens and the conventional slow strain rate test using smooth specimens.