Evolution of surface integrity and fatigue properties after milling, polishing, and shot peening of TC17 alloy blades

Tan, Liang; Yao, Changfeng; Zhang, Dinghua; Ren, Junxue; Zhou, Zheng; Zhang, Jiyin

doi:10.1016/j.ijfatigue.2020.105630

Cited by 72 publications

(23 citation statements)

References 54 publications

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“…A large number of researches about the effect of PSP on the fatigue life of the metal are carried out. [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] Wagner 11 studies the effects of mechanical surface treatments, such as shot peening, roller burnishing, and deep rolling on titanium, aluminum, and magnesium alloys. The influence of mechanical surface treatments on magnesium alloy is presented in relation to the well-studied titanium and aluminum alloys.…”

Section: Introductionmentioning

confidence: 99%

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Effect of pneumatic shot peening on the high and low cycle combined fatigue life of K403 turbine blades

Ding

Huang

Yan

et al. 2021

Fatigue Fract Eng Mat Struct

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The effect of pneumatic shot peening (PSP) on the fatigue properties of K403 turbine blades has been investigated under the high and low cycle combined fatigue (CCF) load with two types of turbine blades: untreated blades and PSP treated blades. It is found that there is a threshold vibration stress for the blades in this study. The PSP has a positive effect on the CCF life of blades mainly due to the compressive residual stress resulting in the reduction of the number of crack sources and propagation rate, when vibration stresses are below the threshold vibration stress. However, the PSP treatment has no effect or a negative effect when vibration stresses are above the threshold value. The compressive residual stress is released along with the microstructure changes of K403 alloy. Meanwhile, the microstructure changes, reflected in the precipitation of the lamellar MC carbides and σ phases, can accelerate the processes of crack initiation and propagation.

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Section: Introductionmentioning

confidence: 99%

“…A large number of researches about the effect of PSP on the fatigue life of the metal are carried out 11–26 . Wagner 11 studies the effects of mechanical surface treatments, such as shot peening, roller burnishing, and deep rolling on titanium, aluminum, and magnesium alloys.…”

Section: Introductionmentioning

confidence: 99%

Effect of pneumatic shot peening on the high and low cycle combined fatigue life of K403 turbine blades

Ding

Huang

Yan

et al. 2021

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…Az iparban a termelékenység mellett egyre nagyobb szerepet kap a megfelelő felületminőség elérése [1]. Míg köszörüléssel, tükrösítéssel javítható a felületminőség, addig a felületi réteg szilárdságtani tulajdonságait rontják [2]. Többfajta megmunkálással is elérhető jó felületminőség, viszont kevés olyan van, amivel a felületminőségen kívül a felületi réteg mechanikai tulajdonságait is tudjuk javítani.…”

Section: Bevezetésunclassified

Gyémántszerszámos vasalás hatása különböző érdességű esztergált felületekre

Csóti

Sztankovics

2020

MDT

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“…The effects of small surface defects on the fatigue properties have been extensively studied for metals [7][8][9][10]. It is generally concluded that the fatigue strength depends on the size and characteristics of the defects.…”

Section: Introductionmentioning

confidence: 99%

“…The compressive residual stress counteracts the tensile stress due to the mechanical cycle loads and improves the fatigue properties of materials [19,23]. However, the improvement in the fatigue life depends on the surface quality of a component after shot peening [7,24] as it changes surface topography [25]. It has been shown that when a scratch of a certain size is produced on the surface of a shot-peened component, the benefit of shot peening on the fatigue properties can be reduced or even completely eliminated depending on scratch size [26,27].…”

Section: Introductionmentioning

confidence: 99%

Effects of shot peening and artificial surface defects on fatigue properties of 50CrV4 steel

Saklakoğlu

Bolouri

İrizalp

et al. 2021

Int J Adv Manuf Technol

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Shot peening processes are commonly used for improving the fatigue properties of steels. Shot peening introduces a compressive residual stress field in the near surface of steel, which can reduce or stop the growth of fatigue cracks and improve fatigue properties. This study experimentally investigated the effect of shot peening on the fatigue properties of 50CrV4 steel alloys with different artificial surface defects. Drilling tools were used to introduce different artificial defects with root radii of 0.585 mm and 0.895 mm on the surface of unpeened samples. The shot peening was applied to the drilled and undrilled samples. Scanning electron microscopy (SEM) observations, micro-hardness and X-ray diffraction residual stress measurements were conducted to analyse the characteristics of the shot-peened and unpeened samples. The results show that the shot peening leads to the transformation of the retained austenite to martensite in the near-surface microstructure. The hardness rates of the surface and near surface both increase by 8% after the shot peening. The peened samples exhibit compressive residual stresses with a high degree of isotropy in the near surface. The fatigue properties of samples were experimentally evaluated by conducting 3-point bending tests. The results indicate that the shot peening improves the fatigue life of drilled and undrilled samples. For the defects with the root radius of 0.895 mm, the shot peening leads to a 500% improvement in the fatigue life compared to unpeened samples regardless of defect depth. For the defects with the root radius of 0.585 mm, the improvement in fatigue life is 40% for the defect depth of 0.2 mm compared to unpeened samples. The improvement increases to 60% and 200% by increasing the defect depths to 0.4 mm and 0.6 mm. The fatigue properties are linked to the changes in the features of defects mainly caused by the deformation hardening and compressive residual stress after shot peening.

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Evolution of surface integrity and fatigue properties after milling, polishing, and shot peening of TC17 alloy blades

Cited by 72 publications

References 54 publications

Effect of pneumatic shot peening on the high and low cycle combined fatigue life of K403 turbine blades

Effect of pneumatic shot peening on the high and low cycle combined fatigue life of K403 turbine blades

Gyémántszerszámos vasalás hatása különböző érdességű esztergált felületekre

Effects of shot peening and artificial surface defects on fatigue properties of 50CrV4 steel

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