Numerical investigation of the effect of oblique laser shock processing parameters on the residual stress and deformation characteristics of TC6 titanium alloy
Source abstract
Abstract
Oblique laser shock processing (OLSP) can provide a new solution for improving the mechanical properties of complex structural elements. In this paper, a spatial distribution model of OLSP shock wave pressure is established and validated to study the residual stress (RS) field and surface morphology of titanium alloy TC6 treated by OLSP using the finite element method. The effects of the incident angle, overlapping rate, and scanning pattern on the RS field and surface morphology were investigated. The OLSP results indicate that the overlapping rate should be at least 50%. The RS field and surface morphology obtained with the interval scanning pattern are more uniform compared to snake and spiral. With a 50% overlapping rate and interval scanning pattern, the surface roughness was found to be 0.16, and the surface residual compressive stress fluctuation amplitude was reduced by 40.07%. The results provide a theoretical basis for complex structures of LSP.
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Research context
OpenAlex topics: Surface Treatment and Residual Stress · High-Velocity Impact and Material Behavior · Erosion and Abrasive Machining
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Semiconductor Science and Technology, South China Normal University 1 , Foshan 528000, People’s Republic of China
Zhongshan Institute of Changchun University of Science and Technology 2 , Zhongshan 528437, People’s Republic of China
School of Natural Sciences (SNS), National University of Sciences and Technology (NUST) 3 , Islamabad 44000, Pakistan
Funding
National Nature Science Foundation of China · Rural Science and Technology Commissioner Project · Scientific and Technology Plan of Guangdong Province
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