Investigation on the fretting fatigue behaviors of Ti-6Al-4V dovetail joint specimens treated with shot-peening

Qi, Yang; Zhou, Wenlong; Gai, Pengtao; Zhang, Xinhua; Fu, Xuesong; Chen, Guoqing; Li, Zhiqiang

doi:10.1016/j.wear.2016.12.004

Cited by 48 publications

(27 citation statements)

References 30 publications

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“…Due to the formation of a hardening layer on the surface of USRP-treated samples, the surface local yield strength is also improved. Enhanced surface yield strength can improve the stress concentration resistance of metallic materials [38]. Therefore, the surface of a USRP-treated sample has a lower stress concentration at the contact edge than that of the untreated sample.…”

Section: Fretting Fatigue Testmentioning

confidence: 99%

Improving the fretting and corrosion fatigue performance of 300M ultra-high strength steel using the ultrasonic surface rolling process

Zhao

Liu

Zhang

et al. 2019

International Journal of Fatigue

116

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300M ultra-high strength steels (300M steels) are frequently used in the manufacture of aircraft landing gear due to their high strength and ductility. However, their high sensitivity to surface defects accelerates fatigue failure and hinders their wider application. In this work, ultrasonic surface rolling processing (USRP) was used to process 300M steel. The surface roughness, hardness, microstructure, and residual stresses before and after USRP treatment were compared, and the surface roughness for USRP-treated samples (0.062 μm) was found to be lower than that for untreated samples (0.32 μm). In addition, a plastically deformed layer was generated on the surface of USRP-treated samples that resulted in higher hardness. Beneficial compressive residual stresses were introduced as a result of USRP treatment. The better surface finish, higher surface hardness and compressive residual stresses lead to significant improvement in the resistance of the 300M steels to fretting fatigue and corrosion fatigue. The fretting fatigue life increased from 11.9K cycles to 56.3K cycles, while the corrosion fatigue life increased from 29.9K cycles to 702.1K cycles.

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Section: Fretting Fatigue Testmentioning

confidence: 99%

Improving the fretting and corrosion fatigue performance of 300M ultra-high strength steel using the ultrasonic surface rolling process

Zhao

Liu

Zhang

et al. 2019

International Journal of Fatigue

116

View full text Add to dashboard Cite

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“…If the components undergo an oscillatory force, the cracks will propagate through the material that can lead to fatigue failure. This phenomenon is common in bolt and riveted joints, spline coupling, shrink‐fit connections, and dovetail joints …”

Section: Introductionmentioning

confidence: 99%

“…This phenomenon is common in bolt and riveted joints, 2 spline coupling, 3 shrink-fit connections, 4 and dovetail joints. 5 Many researchers have focused on fretting fatigue and have endeavoured to reveal different aspects of this NOMENCLATURE: _ γ α ð Þ , slipping rate; _ a, reference strain rate; D L , small grain size; D mean , mean grain size; D R , large grain size; d reg , seed spacing in regular tessellation; F * , stretching and rotation; F P , plastic deformation; g (α) , current strength of the α slip system; g ∾ , saturation stress; g 0 , critical resolved shear stress; h 0 , initial hardening modulus; h αβ , slip hardening modulus; L P , plastic velocity gradient; m (α) , normal to slip plane unit vector; p crit , critical accumulated plastic slip; p cyc , stabilized accumulated plastic slip; P r , percentage of grains within the range; s (α) , slip direction unit vector; τ (α) , resolved shear stress on α slip system; F, deformation gradient; n, rate sensitivity exponent; N, fatigue life; p, accumulated plastic slip; α, slip system index; δ, minimum seed spacing; λ, regularity parameter phenomenon. Wharton and Waterhouse 6 examined the effect of different pad materials on the fretting fatigue strength of Al-4Mg-0.7Mn alloy.…”

Section: Introductionmentioning

confidence: 99%

Investigation of microstructure effect on fretting fatigue crack initiation using crystal plasticity

Minaii

Farrahi

Karimpour

et al. 2018

Fatigue Fract Eng Mat Struct

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The onset of fretting fatigue is characterized by material microstructural changes in which the extent of the damage is comparable to grain size, and hence, the microstructure characteristics could have a significant effect on fatigue crack initiation. In this paper, a three‐dimensional finite element crystal plasticity framework is presented for simulation of the fretting fatigue. Controlled Poisson Voronoi tessellation (CPVT) method is employed to generate the polycrystalline region. In the CPVT method, regularity parameter controls the shape of grains. In this study, the impact of grain size and regularity parameter on crack initiation life and initiation site has been investigated. Cumulative plastic slip was used as a parameter of microstructure‐sensitive fatigue indicator. This parameter could effectively predict the location of crack initiation and its life. The results show that regularity parameter has a significant effect on the location of crack initiation. Furthermore, the effect of grain size on the fretting fatigue life of 316L stainless steel was investigated experimentally through testing different specimens with different grain sizes, to validate the simulation results.

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“…Yang et al studied the shot-peening effects on dovetail specimens’ joints of Ti-6Al-4V fretting fatigue behavior. It was reported that shot-peening altered the crack initiation mechanisms and enhanced the fretting fatigue performance for the titanium alloy [ 31 ]. Dissimilar TIG-welded joints of magnesium and titanium alloys were also subjected to high-energy shot-peening and the microstructure and mechanical properties in terms of tensile strength were evaluated by Chuan Xu et al [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Surface Roughness by Image Processing of a Shot-Peened, TIG-Welded Aluminum 6061-T6 Alloy: An Experimental Case Study

2018

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Visual inspection through image processing of welding and shot-peened surfaces is necessary to overcome equipment limitations, avoid measurement errors, and accelerate processing to gain certain surface properties such as surface roughness. Therefore, it is important to design an algorithm to quantify surface properties, which enables us to overcome the aforementioned limitations. In this study, a proposed systematic algorithm is utilized to generate and compare the surface roughness of Tungsten Inert Gas (TIG) welded aluminum 6061-T6 alloy treated by two levels of shot-peening, high-intensity and low-intensity. This project is industrial in nature, and the proposed solution was originally requested by local industry to overcome equipment capabilities and limitations. In particular, surface roughness measurements are usually only possible on flat surfaces but not on other areas treated by shot-peening after welding, as in the heat-affected zone and weld beads. Therefore, those critical areas are outside of the measurement limitations. Using the proposed technique, the surface roughness measurements were possible to obtain for weld beads, high-intensity and low-intensity shot-peened surfaces. In addition, a 3D surface topography was generated and dimple size distributions were calculated for the three tested scenarios: control sample (TIG-welded only), high-intensity shot-peened, and low-intensity shot-peened TIG-welded Al6065-T6 samples. Finally, cross-sectional hardness profiles were measured for the three scenarios; in all scenarios, lower hardness measurements were obtained compared to the base metal alloy in the heat-affected zone and in the weld beads even after shot-peening treatments.

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Investigation on the fretting fatigue behaviors of Ti-6Al-4V dovetail joint specimens treated with shot-peening

Cited by 48 publications

References 30 publications

Improving the fretting and corrosion fatigue performance of 300M ultra-high strength steel using the ultrasonic surface rolling process

Improving the fretting and corrosion fatigue performance of 300M ultra-high strength steel using the ultrasonic surface rolling process

Investigation of microstructure effect on fretting fatigue crack initiation using crystal plasticity

Evaluation of Surface Roughness by Image Processing of a Shot-Peened, TIG-Welded Aluminum 6061-T6 Alloy: An Experimental Case Study

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