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Residual stress analysis of drive shafts after induction hardening

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Residual stress analysis of drive shafts after induction hardening

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Título Residual stress analysis of drive shafts after induction hardening
Autor Lemos, Guilherme Vieira Braga
Hirsch, Thomas
Rocha, Alexandre da Silva
Nunes, Rafael Menezes
Abstract Typically, for automotive shafts, shape distortion manifests itself in most cases after the induction hardening by an effect known as bending. The distortion results in a boost of costs, especially due to machining parts in the hardened state to fabricate its final tolerances. In the present study, residual stress measurements were carried out on automotive drive shafts made of DIN 38B3 steel. The samples were selected in consequence of their different distortion properties by an industrial manufacturing line. One tested shaft was straightened, because of the considerable dimensional variation and the other one not. Firstly, the residual stress measurements were carried out by using a portable difractometer, in order to avoid cutting the shafts and evaluate the original state of the stresses, and afterwards a more detailed analysis was realized by a conventional stationary diffractometer. The obtained results presented an overview of the surface residual stress profiles after induction hardening and displayed the influence of the straightening process on the redistribution of residual stresses. They also indicated that the effects of the straightening in the residual stresses cannot be neglected
Contido em Materials research : ibero-american journal of materials. São Paulo. Vol. 17, suppl. 1 (Aug. 2014), p. 70-74
Assunto Aço-carbono
Difracao de raios x
Indústria automobilística
Tensão residual : Medição
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/118777
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