Topic
Peening
About: Peening is a research topic. Over the lifetime, 5538 publications have been published within this topic receiving 73073 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, the effect of shot peening on the fatigue lifetime of a near pearlitic microalloyed steel was investigated, and it was found that the fatigue life time could be increased more than tenfold by the shot-peening process.
39 citations
TL;DR: In this paper, the residual stress relaxation under sustained loading at 650°C in IN100 was evaluated on shot-peened nickel-base superalloy specimens, subject to applied stresses near and above monotonic yield, and it was shown that applied stresses below yield exhibit similar retained residual stress profiles in axial and transverse orientations.
39 citations
06 Oct 2014-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, a series of experiments combined with models to explain the redistribution in residual stress depth profiles subject to applied stresses producing gross plastic strains in shot peened laboratory specimens were described.
Abstract: Shot peening is a well-established surface treatment process that imparts large compressive residual stresses onto the surface and at shallow depths to retard initiation and growth of fatigue cracks. The plastic deformation developed during the surface treatment sets up a constraint that retains compressive stresses on the surface balanced by tensile residual stresses in the interior. However, component service histories that produce subsequent plastic deformation may redistribute these residual stresses. In most engineering components, this additional plastic deformation is localized to stress concentration sites such as holes, notches, and fillets. In the case of gross plastic deformation where the entire cross section experiences material yielding the residual stress profile may redistribute, resulting in tensile stresses on the outside surface balanced by compression in the interior. This paper describes a series of experiments combined with models to explain the redistribution in residual stress depth profiles subject to applied stresses producing gross plastic strains in shot peened laboratory specimens. The initial room temperature residual stress and plastic strain profiles provide initial conditions for predictions. Model predictions correlate well with experimental results on shot peened dogbone specimens subject to single cycle and fatigue loading conditions at elevated temperature. Experiments on shot peened notched specimens do not exhibit the same stress redistribution even for larger applied stresses.
39 citations
TL;DR: In this paper, the effect of shot peening on fatigue life is investigated in the case of leaf springs for vehicles, through the analysis of residual stresses by X-ray diffraction and fatigue tests on a series of samples.
39 citations
TL;DR: In this article, a method that uses the Vickers hardness to estimate the yield stress of a metallic material with taking account of residual stress is proposed, and the relationship between the residual stress and the Vicker hardness was experimentally examined.
Abstract: In this paper, a method that uses the Vickers hardness to estimate the yield stress of a metallic material with taking account of residual stress is proposed. Although the yield stress of bulk metal can be evaluated by a tensile test, it cannot be applied to local yield stress varied by surface modification methods, such as the peening technique which introduces high compressive residual stress at the surface. Therefore, to evaluate the local yield stress employing a relatively easy way, the Vickers hardness test was conducted in this paper. Since the Vickers hardness depends on both the residual stress and the yield stress, the relationship between the residual stress and the Vickers hardness was experimentally examined. It was concluded that the yield stress of the surface treated by several peening techniques can be estimated from the Vickers hardness once this has been corrected for residual stress.
39 citations