Residual magnetism is beneficial in improving the corrosion fatigue strength of Type AISI-410 stainless steel compressor blades tested in a synthetic sea water atmosphere. The corrosion fatigue strength of magnetized blades is improved 56% and survival time is increased 357% as compared with non-magnetized blades. The improvement is attributed to a reduction in the rate at which dislocations cross slip to broaden slip planes which are preferentially attacked by the corrosion media. X-ray diffraction studies confirm an interaction of dislocations and magnetic domain walls.

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© 1976 National Association of Corrosion Engineers
1976
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