Treatment of metal pieces for improving fatigue life, comprises determining, on the piece, zones with hard gradient of constraints and compression of zones for confining inclusions in a field of compression constraints

摘要

The process comprises determining, on the piece, zones with hard gradient of constraints and compression of zones for confining inclusions in a field of compression constraints. The compression is produced by cold deformation and laser impact. The treatment is carried out under the surface having a volume of 0.25-3 mm 3. An independent claim is included for a method of determining the life of a workpiece.