Polycrystal plasticity simulations of fretting fatigue

Goh, Chung‐Hyun; Wallace, Jon Michael; Neu, Richard W.; McDowell, David L.

doi:10.1016/s0142-1123(01)00150-5

Cited by 110 publications

(54 citation statements)

References 17 publications

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“…3) but not the back stress (Eq. 5) which is consistent with the approach in [43][44][45]. A latent hardening ratio, w = 2, has been assumed in the present study.…”

Section: Materials Parameterssupporting

confidence: 81%

The effect of prior deformation on subsequent microplasticity and damage evolution in an austenitic stainless steel at elevated temperature

Li¹,

Davies²,

Zhang³

et al. 2013

Acta Materialia

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The micromechanical deformation of an austenitic stainless steel under uniaxial tension at elevated temperature (550 • C) following room temperature compression has been examined in this work. The study combines micromechanical finite element modelling and in-situ neutron diffraction measurements. Overall, good agreement has been achieved between the measured and simulated stress versus lattice strain response, when prestrain is accounted for. The results indicate that the introduction of prestrain can significantly influence subsequent microscale deformation and damage development associated with microplasticity and that an appropriate representation of strain history can improve the predictive accuracy at the microscale for a polycrystalline material.

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“…3) but not the back stress (Eq. 5) which is consistent with the approach in [43][44][45]. A latent hardening ratio, w = 2, has been assumed in the present study.…”

Section: Materials Parameterssupporting

confidence: 81%

The effect of prior deformation on subsequent microplasticity and damage evolution in an austenitic stainless steel at elevated temperature

Li¹,

Davies²,

Zhang³

et al. 2013

Acta Materialia

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“…The fretted surface can be divided into slip and stick regions. The fretting fatigue cracks generally initiates near the boundary between the slip and stick regions [14][15][16] , which provides evidence that the fatigue crack initiated from the edge part of the fretted surface caused fretting between the plug and rod. As shown in Fig.…”

Section: Fretting Fatigue Crack Initiationmentioning

confidence: 91%

Effect of Solute Oxygen on Compressive Fatigue Strength of Spinal Fixation Rods Made of Ti–29Nb–13Ta–4.6Zr Alloys

et al. 2016

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In spinal xation devices, the activity of the patient can cause fretting of the metal-to-metal contacts between the rod and plug, which may result in failures. In this study, compressive fatigue tests were conducted with rods made of Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) with oxygen contents of 0.06 mass% (06O) and 0.89 mass% (89O) and Ti-6Al-4V extra low interstitial alloy (Ti64) as comparison in both air and saline solution. The fatigue strength increases in the order of 06O < 89O < Ti64 in both air and saline solution. These results indicate that solid-solution strengthening by oxygen improves the fretting fatigue resistance of the TNTZ rod.

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“…Because of that constant values of Young's modulus E=115 GPa and Poisson ratio m=0.3 were assigned to the substrate in all analyses. [10] On the other hand the heat treatment applied, phase composition and microstructure of the alloy significantly affect its yield properties. Therefore the analyses were carried out for yield strength of the substrate ranging from 500 to 900 MPa.…”

Section: Tensile Deformation Behaviour Of the Titanium Alloy With Harmentioning

confidence: 99%

“…Two phase titanium alloys exhibit low strain hardening and are frequently modeled even as elastic-perfectly plastic material. [10] In current analysis low linear strain hardening was assumed for the substrate ( Fig. 1(b)).…”

Section: Tensile Deformation Behaviour Of the Titanium Alloy With Harmentioning

confidence: 99%

Tensile Deformation Behaviour of the Titanium Alloy with Hard Elastic Coating

Ziaja

Sieniawski

2006

Adv Eng Mater

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ExperimentalResidual stress distributions and their relaxation via plastic deformation and the formation of dislocations was characterized with Polychromatic X-ray microdiffraction (PXM). PXM was performed with the 3D X-ray crystal microscope using a modified Laue diffraction method based on polychromatic radiation. [4,8] This approach allows for true 3D mapping of crystalline phase, orientation, elastic strain and plastic deformation with unprecedented spatial resolution. The differential-aperture microbeam technique [8] allows mapping of the crystal structure orientation and distortions with sub-micron spatial resolution in three dimensions. This method allows a micrometre-scale resolution with depth (along the path of the incident beam). At each depth the data are obtained by computer reconstruction for each pixel of the CCD. Details on the experimental setting and data collection can be found elsewhere. [4,8] Data collection has been carried out using microbeam Laue diffraction on beamline 34ID at the APS.Scanning electron microscopy (SEM) and orientation imaging microscopy (OIM) was performed using Philips XL30.Autogenous welds of thin superalloy sheets with the size of 50 × 70 × 0.8 mm were prepared at 1.5 kw with continuous wave Nd-YAG laser in two different crystallographic direction, parallel and perpendicular to the dendrite orientation in the plane of the sheet. Different processing conditions were used: power was varied in the interval of 300-850 w; welding velocity in the interval of -2.1-21.2 mm/sec. The increasing demands for higher performance and more severe application conditions have been the main driving forces for wider use of titanium alloys for engineering components. The main reason for that is a favourable combination of properties like high specific strength, corrosion resistance and biocompatibility. However low resistance to oxidation at high temperature and poor tribological behaviour are the main reasons that very often surface treatment is applied for elements made of titanium alloys in order to obtain surface layer having favourable properties. PVD methods lead to formation of intermetallic or compound layers (e.g. TiN, TiC, Ti 3 Al, TiAl, Al 2 O 3 ) with thickness of the order of several lm. As the result of thermochemical treatment (e.g. nitriding, carbonitriding) hardened diffusion layer is formed, at the top of which intermetallic or compound layer can also be present (e.g. TiN). These phases have high Young's modulus and can be treated as perfectly elastic. Because of high value of elastic modulus and very low plastic deformability of the layer, when large tensile stresses are present, microcracks appear in the layer. They induce stress concentration that leads to local plastic deformation of the substrate at the macroscopic tensile stress value below its yield strength. [1,2] Plastic deformation of the substrate is additional factor decreasing durability of the layer because of delamination and flaking. [2,3] This phenomenon was most frequently studied for indentation and fri...

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Polycrystal plasticity simulations of fretting fatigue

Cited by 110 publications

References 17 publications

The effect of prior deformation on subsequent microplasticity and damage evolution in an austenitic stainless steel at elevated temperature

The effect of prior deformation on subsequent microplasticity and damage evolution in an austenitic stainless steel at elevated temperature

Effect of Solute Oxygen on Compressive Fatigue Strength of Spinal Fixation Rods Made of Ti–29Nb–13Ta–4.6Zr Alloys

Tensile Deformation Behaviour of the Titanium Alloy with Hard Elastic Coating

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