Effects of processing parameters on residual stress fields of 2024-T351 alloy blade subjected to massive double-sided laser peening treatment
Source abstract
Abstract
Double-sided laser shot peening (DSLSP) is a promising technique for improving mechanical properties for thin-section components. Residual stress (RS) field induced in the thin 2024-T351 alloy blade by DSLSP was investigated through experiments and finite element simulation. The effects of key parameters, such as pulse scanning patterns, overlapping rates, and DSLSP modes, on the RS field were analyzed. The model was validated by comparing the simulation results with experiment data. The results revealed that the scanning patterns advertently influenced the RS distribution, and compressive residual stresses were found to exist inside the curved thin-section blade. The overlapping rate of 70% could drive the tensile stress (TS) distributed at the near-surface into a fully compressed state, while it could also cause a large-scale TS concentration at the edge of the blade. Moreover, the mechanism of shock wave reflection-coupling on RS distribution with two DSLSP modes was also clearly revealed. The alternate double-sided laser peening mode would greatly limit the edge stress concentration and result in a better RS distribution.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Surface Treatment and Residual Stress · Erosion and Abrasive Machining · Healthcare and Venom Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Semiconductor Science and Technology, South China Normal University 1 , Guangzhou 510631, China
Guangdong Provincial Engineering Technology Research Center for Low Carbon and Advanced Energy Materials 2 , Guangzhou 510631, China
Department of Physics, The University of Hong Kong 3 , Pokfulam Road, Hong Kong 999077, People’s Republic of China
China Electronic Product Reliability and Environmental testing research Institute 4 , Guangzhou 510610, China
SCNU Qingyuan Institute of Science and Technology Innovation Co., Ltd. 5 , Qingyuan 511517, China
Funding
National Natural Science Foundation of China · The Scientific and Technological Plan of Guangdong Province China
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