Abstract
Effects of massive laser shock peening (LSP) treatment as a function of coverage layer on surface residual stress, microstructure, and corrosion fatigue (CF) resistance of Fe-Cr alloy were studied by X-ray diffraction technique, scanning electron microscope observations, and corrosion fatigue crack growth (CFCG) testing. Special attention was paid to the details of compressive residual stress and fracture morphology, and the influence mechanism of coverage layer on CF behaviour was also determined. Results indicated that LSP generated deeper compressive residual stress and effectively decreased the CFCG rate, and increased coverage layers further improved the corrosion fatigue life of notched specimens.
Original language | English (US) |
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Pages (from-to) | 168-179 |
Number of pages | 12 |
Journal | Journal of Alloys and Compounds |
Volume | 773 |
DOIs | |
State | Published - Jan 30 2019 |
Keywords
- Corrosion fatigue
- Fe-Cr alloy
- Fractural morphology
- Laser shock peening
- Stress corrosion
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry