Improvement of the mechanical properties of the material by laser shock peening. Shock waves (> GPa) applied to metallic materials improve their fatigue resistance and their resistance to corrosion.
The characteristics of the laser shock peening process:
- Deep residual stresses
- Improved resistance to fatigue and corrosion
- Treatment of hard to reach areas
- Increased surface and near surface durability
- Shaping of the piece possible by introducing stresses
- Depth of residual stresses up to a few mm
- 165% improvement in fatigue and corrosion resistance compared to an untreated sample
- 65% increase in surface and near surface durability down to 200 μm depth
Average duration of treatment: 25 mm2.min-1
- IR or green laser, ns pulse, > 500 mJ, up to 100 Hz
- Fixed beam focused in front of the moving part
Average surface roughness after treatment < 5 μm for an initial surface finish of 1 μm
Material used for laser shock peening:
- Aluminium alloy
- Steel alloy
- Titanium alloy
Areas of application
Associated products or services
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