1. The Impact of Induced Shot Peening Residual Stresses on Metallic Components of SAE 1020 Steel with Pre-Existing Compressive Stresses
- Author
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Tetyana Gurova, Anatoli Leontiev, Tatiana Santos da Cunha, Patrícia dos Santos Matta, Heitor Ferreira Werner, Suzana Bottega Peripolli, and Eustáquio de Souza Baêta Júnior
- Subjects
Shot peening ,residual stresses ,X-ray diffraction ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
An experimental study on the distribution of residual stresses induced by shot peening on samples of SAE 1020 steel with pre-existing compressive stresses is presented. Two samples with similar geometries were subjected to a heat treatment to relieve stress. Then, one of the samples was subjected to a cementation process to introduce compressive residual stresses. Both samples, with and without cementation, were subjected to the same shot peening treatment. Using X-ray diffraction and electrolytic polishing to remove superficial layers, the depth-resolved residual stress distribution was obtained. It was concluded that the effect of pre-existing compressive stresses should be considered as a factor that influences the final distribution of the residual stresses induced by shot peening, namely the maximum of shot peening induced residual stresses moves closer to the surface in a sample with large initial compressive stresses and its value is greater than the maximum value for a specimen with lower initial compressive stresses.
- Published
- 2024
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