Journal
MATERIALS
Volume 10, Issue 3, Pages -Publisher
MDPI AG
DOI: 10.3390/ma10030292
Keywords
laser shock processing; cavitation erosion; laser weldment
Categories
Funding
- National Natural Science Foundation of China [51575242]
- Natural Science Foundation of Jiangsu Province [BK20150492, BK20151341]
- Jiangsu Province Postdoctoral Sustentation Fund [1501105B, 1501140B]
- China Postdoctoral Science Foundation [2015M581746]
- Senior Talent Foundation of Jiangsu University [14JDG159]
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Effects of laser shock processing (LSP) on the cavitation erosion resistance of laser weldments were investigated by optical microscope (OM), scanning electron microscope (SEM) observations, roughness tester, micro hardness tester, and X-ray diffraction (XRD) technology. The morphological microstructures were characterized. Cumulative mass loss, incubation period, erosion rate, and damaged surface areas were monitored during cavitation erosion. Surface roughness, micro-hardness, and residual stress were measured in different zones. Results showed that LSP could improve the damage of morphological microstructures and mechanical properties after cavitation erosion. The compressive residual stresses were generated during the process of LSP, which was an effective guarantee for the improvement of the above mentioned properties.
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