Abstract
The variation of plane strain fracture toughness and fatigue crack growth rates with sulphide inclusion content has been examined for four different sulphur levels in a 12 wt% Cr stainless steel. Charpy impact tests have also been conducted and the experimental results are correlated with the volume fraction of inclusions and the inter-inclusion spacing. The availability of the experimental results for the case of steam turbine blading is discussed with a hypothetical example problem.
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