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| A STUDY OF THE EFFECT OF INCLUSIONS ON PITTING SUSCEPTIBILITY OF STAINLESS STEEL |
| Zhang L in and Yang Dejun(Beijing University of Iron and Steel Technology) |
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Abstract The type, distribution and size of inclusions in stainless steel 00Cr11Ni10 Mo2Ti were studied by a combination of techniques with scanning electron microscopy, electron probe analyses and metallography. The site susceptible to pit initiation was observed on the surfaces of electrochemically polarized specimens under the long focus microscope. The results indicate that pits initiate at the edge of nonmetallic inclusions. Under the experimental condition, TiN is more susceptible to pitting initiation than Al_2O_3; geometric factors such as size, shape and distribution of the inclusions also affect the pitting susceptibility obviously.
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Received: 25 August 1987
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