期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 773, 期 -, 页码 168-179出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.09.147
关键词
Laser shock peening; FeCr alloy; Fractural morphology; Corrosion fatigue; Stress corrosion
资金
- National Natural Science Foundation of China [51575242, 51775250]
- National Key R&D Program of China [2017YFB1103603]
- Jiangsu Provincial Science and Technology Projects [BE2016148, BE2017142]
- Practice and Innovation Program of Jiangsu Province [KYCX17_1766]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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. (C) 2018 Elsevier B.V. All rights reserved.
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