Stress Corrosion Cracking or Corrosion Fatigue? Visual, Scanning Electron Microscope and Metallographic Characterization, 1993 Engineering Conference Proceedings
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Case histories of environmentally assisted cracking of stainless steels in the pulp and paper industry are used to compare the interpretation of common failure analysis diagnostic tools. The case histories used were selected because reliance on any one method of diagnosis could have led to the wrong conclusion.
The materials considered are type 316L austenitic stainless steel, the wrought low carbon martensitic stainless steel 1.1418 (16 Cr - 5 Ni - 1 MO), and the precipitation hardening martensitic stainless steels 15-5 PH and 17-4 PH.
Visual and scanning electron microscope techniques were used to examine fracture surfaces. Metallographic techniques were used to examine cross sections through secondary cracking. The results were interpreted in consideration of known service conditions.