Advances in Surface Engineering: On-Demand Poster Presentations
Sponsored by: TMS Surface Engineering Committee
Program Organizers: Rajeswaran Radhakrishnan, Faraday Technology Inc; Brian Skinn, OpenTeams, Inc.; Timothy Hall, Faraday Technology Inc; Michael Roach, University of Mississippi Medical Center; Sandip Harimkar, Oklahoma State University; Tushar Borkar, Cleveland State University; Rajeev Gupta, North Carolina State University
Friday 8:00 AM
October 22, 2021
Room: On-Demand Poster Hall
Location: MS&T On Demand
Poster
Effect of Laser Shock Peening on Residual Stress Distribution of 304 Austenitic Steel: Danbi Song1; Ryoonhan Kim1; Jeong Suh1; Dongsig Shin1; 1Korea Institute of Machinery and Materials
Laser Shock Peening (LSP) is powerful surface technologies that has been widely used in Aerospace, nuclear power plant and marine industry. It is a process that propagates a shock wave into the material through plasma formed by irradiating a high energy laser pulse to the surface of a material. This causes a high residual compressive stress on the metal surface, which is beneficial to mechanical properties such as fatigue strength and stress corrosion.In this study, the residual stress measurements in 304 austenitic stainless steel determined from Electron Backscatter Diffraction (EBSD) kernel average misorientation (KAM) analysis have been compared to residual stress results obtained by the hole drilling technique. High power laser was used to strengthen the surface of specimens with a single LSP. It was found that the grain size of the peened specimen was refined and the residual stress was increased.