| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5357597 | Applied Surface Science | 2015 | 33 Pages |
Abstract
The effect of passive film on mechanical properties of the martensitic stainless steel 15-5PH in neutral 3.5Â wt% NaCl solution was investigated, using surface analysis techniques, electrochemical measurements and slow strain rate technique. In neutral 3.5Â wt% NaCl solution, the passive film formed at passivity potential is mainly divided into iron oxides-rich outer layer (FeO, Fe2O3) and chromium oxides-rich inner layer (Cr2O3, Cr(OH)3). During crack propagation, the passive film reduced formation of micro-cracks and micro-cleavages around the crack tip, and as a consequence, remarkably increased the fracture ductility of the martensitic stainless steel.
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Authors
Qiang Guo, Jianhua Liu, Mei Yu, Songmei Li,