| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5007526 | Optics & Laser Technology | 2017 | 8 Pages |
Abstract
The effect laser shock processing (LSP) on high cycle fatigue behavior of 2205 duplex stainless steel (DSS) notched samples was investigated. The swept direction parallel (LSP 1) and perpendicular (LSP 2) to rolling were used in order to examine the sensitivity of LSP to manufacturing process since this steel present significantly anisotropy. The Nd:YAG pulsed laser operating at 10Â Hz frequency and 1064Â nm wavelength was utilized. The LSP configuration was the water jet mode without protective coating. Notched specimens 4Â mm thick were treated on both sides, and then fatigue loading was applied with RÂ =Â 0.1. The results showed that the LSP 2 condition induces higher compressive residual stresses as well as a higher fatigue life than the LSP 1 condition. By applying LSP 2 condition, an enhancement of fatigue life up to 402% is reported. In addition, the microhardness profiles showed different depths of hardening layer for each direction, according to the anisotropy observed.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Electrical and Electronic Engineering
Authors
César A. Vázquez Jiménez, Gilberto Gómez Rosas, Carlos Rubio González, Vignaud Granados Alejo, Silvina Hereñú,