The effect of pre-strain on intergranular stress corrosion cracking (IGSCC) susceptibility of Type 304 stainless steel has been studied using a constant load tensile specimen in 288°C water containing 26ppm dissolved oxygen. The results obtained are summarized as follows:(1)The time to failure of the specimens pre-strained at room temperature or 288°C are longer than those of non pre-strained specimens.(2) The stress-strain behaviour of materials changes by pre-straining. The effect of pre-strain on IGSCC initiation could be explained in terms of a relation between the rupture of surface oxide film and the stress-strain behaviour of materials.
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Kuniya et al. (1982) studied this question.