Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Influence of Surface Finishing by Grinding and Polishing on the Residual Stresses in S13Cr Steel
Submission Author:
Túlio Salek , RJ
Co-Authors:
Túlio Salek, Maria Cindra Fonseca
Presenter: Túlio Salek
doi://10.26678/ABCM.COBEM2023.COB2023-2157
Abstract
Supermartensitic stainless steels, known as S13Cr steels, were developed as an improvement of martensitic stainless steels, such as AISI 410, having better mechanical and corrosion resistance properties than these steels, while presenting a lower production cost compared to superduplex stainless steels. The S13Cr steels have been widely used in the production of tubular components for the oil and gas industry, which are destined for services involving exposure to corrosive environment, in addition to mechanical and thermal loads. Under these conditions, the residual stresses generated in the manufacturing of these components, including machining-induced residual stresses, can significantly influence their performance. In machining processes, the workpiece is submitted to high deformation rates and high temperature gradients, giving rise to residual stresses that may be detrimental to the performance of the final product. This work presents a study on the influence of finishing by grinding and polishing on the residual stresses in the context of manufacturing S13Cr steel specimens for tensile testing. The residual stresses were measured by X-ray diffraction, using the sin²ψ technique and the study was complemented by analysis of magnetic Barkhausen noise and surface roughness. The results indicated that grinding was more effective in producing more compressive residual stresses. Polishing produced a slightly better surface finish when compared to grinding, although there was almost no significant difference.
Keywords
Residual stresses, S13Cr steel, machining, X-ray Diffraction
