The arrows show how compressive residual stress affects metal after laser peening.
The laser peened region in red has become larger, pushing outward.
The surrounding metal regions are trying to push inward to get back to their original shape.
The sum of these two opposing forces comprise compressive residual stress,
which helps prevent surface corrosion and cracking.
Deep compressive stresses extend
the useful life of components.
Laser peening produces measurable compressive residual stresses typically 1-2 mm deep below the metal surface.
In some cases laser peening penetrates up to 12 mm below the surface.
These deep compressive residual stresses counteract tensile stress
on parts operating at high speed or subject to other forces that lead to corrosion and cracking.
For a Deeper Dive into How Laser Peening Technology Delivers Powerful Results
Our brochure tells the story of Laser Peening — the process, the benefits, how it prevents metal fatigue, and an introduction to Laser Peening Equipment