The Influence of Input Variability on the Compressive Residual Stresses in 30CrMnSiNi2A via Laser Shock Processing

Abstract:

The laser shock processing(LSP) is a new surface treatment technique that induce a significant compressive residual stress field on the metal and alloys. The developed compressive stress field is beneficial to improve surface properties such as fatigue, wear, and corrosion. To improve the understanding of the shock process, investigation into the physical processes and its variability involved is necessary. This work examines the effect of LSP at different input variability to induce its compressive stress. Various factors that affect the compressive stress of the LSP are tested with a serial experimental using 30CrMnSiNi2A as workpiece. It was found that the in-depth residual stress induced by LSP were a function of laser power density,laser beam spot size, laser pulse width and pulse repetition.

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 1828-1832
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.1828
• Online since: June 2012
• Authors: Yong Hua Wu
• Keywords: 30CrMnSiNi2A, LSP, Residual Stress, Shock Waves

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