Directional development of residual stress and surface fatigue during sliding contact

Linz, M.; Winkelmann, H.; Hradil, K.; Badisch, E.; Mücklich, F.

doi:10.1016/j.engfailanal.2013.06.011

Cited by 8 publications

(3 citation statements)

References 8 publications

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“…Sub‐surface plastic deformation and defect accumulation in sliding contacts is governed by dislocation activity, crack initiation as well as propagation, and is related to material wear . The strain evolution depends on the applied contact stresses, which are determined by the geometrical and mechanical properties of the contacting bodies (e.g., Young's modulus, Poisson's ratio and yield strength) and the contact characteristics (e.g., sliding speed, lubrication regime).…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Strain Distribution and Saturation of Geometrically Necessary Dislocations in a Ferritic–Pearlitic Steel during Lubricated Sliding

et al. 2018

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The microstructural evolution of ferritic-pearlitic steel is studied during unidirectional sliding under boundary lubrication using a ball-on-flat configuration. Dislocation activity as a function of distance to surface is determined using orientation gradients by electron backscatter diffraction in logarithmic intervals up to one million of sliding cycles. The orientation gradient results show the formation of geometrically necessary dislocations and low-angle grain boundaries, followed by a consolidation of those grain boundaries as nanocrystalline grains. The density of geometrically necessary dislocations and low-angle grain boundaries is observed to reach a steady state after around 100 000 cycles. Plastic strain is not homogeneously distributed within both material phases, that is, ferrite and pearlite. Most of the plastic deformation is carried by the ferritic phase. The heterogeneous strain distribution between the ferritic and the pearlitic phase observed in the electron backscatter diffraction measurements is attributed to stress incompatibilities at the grain boundaries.

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Section: Introductionmentioning

confidence: 99%

Heterogeneous Strain Distribution and Saturation of Geometrically Necessary Dislocations in a Ferritic–Pearlitic Steel during Lubricated Sliding

et al. 2018

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“…In addition, the obtained residual stress in the proposed semi-analytical method for rolling and sliding contact by Foletti and Desimone [24] gives good agreement with finite element method considering non-linear kinematic hardening model. The study of directional development of residual stress and surface fatigue during sliding contact was investigated by Linz et al [25], which shows that transversal residual stress increases to 250-300 MPa after the 10 th cycle and remains constant for any further increment in sliding cycles. However, to the best of the author's knowledge, far too little attention has been paid to compare the friction coefficient and displacement amplitude on residual stress simulation responses on elastic-plastic halfspace of advanced alloys, including aeroengine materials such as Ti-6Al-4V and Super CMV alloys.…”

Section: Introductionmentioning

confidence: 99%

Prediction of residual stress using explicit finite element method

Siswanto¹,

Nagentrau²,

Tobi³

2015

J. Mech. Eng. Sci.

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This paper presents the residual stress behaviour under various values of friction coefficients and scratching displacement amplitudes. The investigation is based on numerical solution using explicit finite element method in quasi-static condition. Two different aeroengine materials, i.e. Super CMV (Cr-Mo-V) and Titanium alloys (Ti-6Al-4V), are examined. The usage of FEM analysis in plate under normal contact is validated with Hertzian theoretical solution in terms of contact pressure distributions. The residual stress distributions along with normal and shear stresses on elastic and plastic regimes of the materials are studied for a simple cylinder-on-flat contact configuration model subjected to normal loading, scratching and followed by unloading. The investigated friction coefficients are 0.3, 0.6 and 0.9, while scratching displacement amplitudes are 0.05 mm, 0.10 mm and 0.20 mm respectively. It is found that friction coefficient of 0.6 results in higher residual stress for both materials. Meanwhile, the predicted residual stress is proportional to the scratching displacement amplitude, higher displacement amplitude, resulting in higher residual stress. It is found that less residual stress is predicted on Super CMV material compared to Ti-6Al-4V material because of its high yield stress and ultimate strength. Super CMV material with friction coefficient of 0.3 and scratching displacement amplitude of 0.10 mm is recommended to be used in contact engineering applications due to its minimum possibility of fatigue.

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“…Cao et al [36] proposed a new method of evaluating grinding surface quality on composites by the study on surface waviness. Linz et al [37] have investigated directional development of residual stress and surface fatigue during sliding contact based on the experimental and analytical methods. Residual stress analysis revealed that normalized samples developed tensile stresses in the nearsurface zone of the wear track and residual stresses were found to be higher transversal to the moving direction than longitudinal.…”

Section: Introductionmentioning

confidence: 99%

Investigate on distribution and scatter of surface residual stress in ultra-high speed grinding

Chen

Fang

Zhang

2014

Int J Adv Manuf Technol

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The purpose of this study is to investigate the residual stress induced by ultra-high-speed grinding of difficult-tomachine materials considering the thermomechanical coupling effect that is generated due to the friction between diamond tool and workpiece's surface. A three-dimensional finite element method taking the rotational motion of tool into account is proposed. The simulation consists of three operations including loading, unloading, and cooling. The influences of different grinding conditions (grinding speed and grinding depth) on the residual stress field are analyzed. Results show that the main grinding force comes from normal rather than tangential direction due to the tool's negative rake angle and their ratio is in the range of 1.2 to 1.7. The residual stress state on the finished surface is either tensile or compressive depending on various grinding condition; even both states may exist simultaneously. Further study shows that the ultra-high speed grinding can obtain lower surface residual tensile stress comparing with the high-speed grinding. Besides, a larger grinding depth is not advantage for obtaining a better machined quality in subsurface layer as the tensile maximum principal stress is also larger. Finally, the effects of different grinding conditions on residual stress scatters are analyzed utilizing mathematical statistic method. Results show that both smaller grinding depth and higher grinding speed are beneficial to achieve a better consistency of residual stress.

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Directional development of residual stress and surface fatigue during sliding contact

Cited by 8 publications

References 8 publications

Heterogeneous Strain Distribution and Saturation of Geometrically Necessary Dislocations in a Ferritic–Pearlitic Steel during Lubricated Sliding

Heterogeneous Strain Distribution and Saturation of Geometrically Necessary Dislocations in a Ferritic–Pearlitic Steel during Lubricated Sliding

Prediction of residual stress using explicit finite element method

Investigate on distribution and scatter of surface residual stress in ultra-high speed grinding

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