Investigation on thermal relaxation of residual stresses induced in deep cold rolling of Ti–6Al–4V alloy

Hadadian, Armin

doi:10.1007/s00170-018-2668-4

Cited by 15 publications

(3 citation statements)

References 28 publications

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“…It is also interesting that, in most cases, the position of maximum of residual stresses tends to be subsurface, as seen in many other publications. 3,8 An experiment was also carried out to verify the reliability of the simulation results. The experimental results are shown in Figure 10(b) and it is obvious that the FE simulation is consistent with experimental observation.…”

Section: Resultsmentioning

confidence: 99%

“…The model was verified by the roller burnishing test with different parameters and materials. Hadadian and Sedaghati 8 adopted the Johnson–Cook constitutive model to develop a model of deep rolling process between a ball and a plate for investigating the thermal relaxation of residual stress. Uddin et al 9 developed a three-dimensional (3D) FE model of ball burnishing between a ball and a plate using Johnson–Cook constitutive model, and the investigation of the influence of process parameters on the surface integrity was carried out.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of residual stress distribution induced during deep rolling of Ti-6Al-4V alloy

Han

Zhang

Yao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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To clarify the effects of deep rolling parameters on residual stress, two-dimensional and three-dimensional finite element models were developed using the Chaboche hardening model. Both two-dimensional and three-dimensional simulation results were compared with experimental results. The three-dimensional model is more accurate, especially the 90° cut-out model. The maximum errors in the longitudinal and circumferential directions of 90° cut-out are 8.9% and 15.6%, respectively. Compared to 20 MPa, a rolling pressure of 38 MPa results in larger and deeper compressive residual stress in both directions, but lower surface residual stress in the circumferential direction. Compared to 30% overlap, 60% overlap produces larger compressive residual stress in the near surface region in the longitudinal direction and deeper residual stress with lower maximum compressive residual stress in the circumferential direction. The friction coefficient only slightly affects residual stress in the circumferential direction; increasing the rolling speed induces higher near surface residual stress in the circumferential direction. Compared to the HG6 tool, the HG8 tool generates decreasing surface residual stresses and deeper residual stress in both directions. Compared to one pass, two passes significantly increase the residual stress in circumferential direction, but only slightly increase the residual stress in the longitudinal direction.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of residual stress distribution induced during deep rolling of Ti-6Al-4V alloy

Han

Zhang

Yao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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show abstract

“…The introduced residual stress depth profile typically appears as described in the following: In the surface near the region, residual compressive stresses are introduced, with their maximum occurring at or slightly below the surface. Underneath, the residual compressive stresses reduce and, after zero crossing, change to a compensating tensile residual stress range [30].…”

Section: Introductionmentioning

confidence: 99%

Numerical parameter sensitivity analysis of residual stresses induced by deep rolling for a 34CrNiMo6 steel railway axle

Pertoll,

Buzzi,

Leitner

et al. 2024

Int J Adv Manuf Technol

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To optimise the benefits of the deep-rolling process in the service life context of treated components, the process application must be investigated. In addition to the reduction in surface roughness and near-surface material strengthening, compressive residual stresses are introduced, which are primarily responsible for the increase in service life for components, especially in the case of high-strength steel materials. A numerical parameter sensitivity analysis is performed in order to investigate the introduced residual stresses in detail. For this purpose, a validated deep-rolling simulation model is used, which replicates the deep rolling of a railway axle made of the high-strength steel material 34CrNiMo6. The model is based on an elastic-plastic Chaboche material model parameterised on uniaxial tensile and LCF test results and validated with residual stress measurements. Using this model as a basis, the effect of the main process parameters deep-rolling force, feed rate, friction coefficient, number of overruns, tool geometry, and shaft geometry on the resulting residual stress state are investigated. The results reveal that the deep-rolling force has the most significant influence on the introduced residual stress state and should therefore be highlighted. In the case of applying a deep-rolling force of more than 10 kN, maximum compressive residual stresses of around − 1000 MPa are introduced, and a strong saturating behaviour is shown. Maximum compensating tensile residual stresses of + 100 MPa occur below the surface. The main influence of the deep-rolling force is the effective depth achieved, which is determined by the depth of the zero crossing. This varies from 1 mm with an applied force of 2 kN to more than 3.5 mm with 20 kN. Furthermore, the results are analysed to conclude suggestions for the process’s applicability, and a proposal for an optimised deep-rolling treatment is presented. There multiple deep rolling with decreased deep-rolling forces is used to achieve a comparably optimised residual stress state. In summary, with the presented results, a contribution to a deeper understanding of the deep-rolling process can be achieved; the influence of the most important process parameters on the residual stress in-depth profiles is established; an optimisation proposal is presented; and correlations are found. Thus, the base work for further fatigue strength assessments and the optimisation of the deep-rolling process regarding the increase of service is laid.

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Smoothing, deep, or mixed diamond burnishing of low-alloy steel components – optimization procedures

Maximov

Duncheva

Anchev

et al. 2019

Int J Adv Manuf Technol

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Investigation on thermal relaxation of residual stresses induced in deep cold rolling of Ti–6Al–4V alloy

Cited by 15 publications

References 28 publications

Investigation of residual stress distribution induced during deep rolling of Ti-6Al-4V alloy

Investigation of residual stress distribution induced during deep rolling of Ti-6Al-4V alloy

Numerical parameter sensitivity analysis of residual stresses induced by deep rolling for a 34CrNiMo6 steel railway axle

Smoothing, deep, or mixed diamond burnishing of low-alloy steel components – optimization procedures

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