Analysis of "distortion potential" of cylindrical bars of AISI 1048 steel

Alexandre da Silva Rocha, Rafael Menezes Nunes, Eduardo Moller Ferlauto

Abstract


The residual stresses can affect positive or negatively the behavior of the mechanical components. These residual stresses also represent one of the main potentials for the distortion (which are bending and dimensional changes) in mechanical components during the manufacture. Therefore, the determination of the distribution and the control of these residual stresses in each stage of the manufacturing process is of great importance. In this work, an analysis of the variation of the residual stresses were accomplished in cold-drawed bars of AISI 1048 steel due to the manufacturing process. The bars were analyzed by X-ray diffraction and hole-drilling to characterize the residual stresses. Starting from the values of strains obtained, the hoop and longitudinal residual stresses were calculated for each tested point. With this work, a detailed view of the development of stress in the surface area of bars after the process steps was obtained.

Key words: cold drawing, residual stresses, x-ray diffraction, hole-drilling.

Full Text: PDF (Português (Brasil))



ISSN: 1808-7310 - Best viewed in Mozilla Firefox

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