Improving high cycle fatigue performance of gas tungsten arc welded Ti6Al4V titanium alloy by warm laser shock peening

Feng, Xiaotai; Pan, Xinlei; He, Weifeng; Liu, Ping; An, Zhibin; Zhou, Lian

doi:10.1016/j.ijfatigue.2021.106270

Cited by 35 publications

(10 citation statements)

References 53 publications

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“…It has been proven that LSP can be used to improve the fatigue properties of various metallic materials, including magnesium alloys, [123][124][125] titanium alloys, [23,84,119,120] aluminum alloys, [2,92,126] and superalloys [127,128] that are used in aviation structures and components. Generally, the leading edges of fan or compressor blades made of titanium alloy are more vulnerable to FOD.…”

Section: Lsp Improving the Fatigue Performance Of Aircraft Enginesmentioning

confidence: 99%

“…Surface treatment technologies such as shot peening (SP), LSP, low-plasticity burnishing (LPB), and deep rolling (DR) have been widely used to improve the HCF resistance of AE components and prolong their service life. [18][19][20][21][22][23][24][25] While conventional SP can improve the fatigue resistance of components by introducing a large CRS on the target surface, the depth of the CRS layer is limited. [26][27][28] Other limitations of SP include poor thermal and mechanical stability of the CRS, [29][30][31] a significant increase in target surface roughness, and difficulty in realizing automatic control.…”

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confidence: 99%

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A Critical Review of Laser Shock Peening of Aircraft Engine Components

Huang

Zou³

et al. 2023

Adv Eng Mater

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Many aviation accidents are caused by the failure of aircraft engine components, and engine blades are especially vulnerable to high‐cycle fatigue fracture in severe working environments as well as to impact damage caused by foreign objects. To address this problem, the United States took the lead and has been successful in implementing laser shock peening (LSP) as a surface treatment for aircraft engine components to enhance their fatigue performance. This review provides an overview of the development of LSP for use in treating aircraft engine components over the past three decades, with a brief introduction to the development of high‐energy pulsed lasers for LSP. A particular focus of this review is on the limitations and challenges associated with the application of LSP for treating critical aircraft engine components. It is hoped that this review serves as a reference for future research and development that can lead to better performance of these components.

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Section: Lsp Improving the Fatigue Performance Of Aircraft Enginesmentioning

confidence: 99%

mentioning

confidence: 99%

A Critical Review of Laser Shock Peening of Aircraft Engine Components

Huang

Zou³

et al. 2023

Adv Eng Mater

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“…In addition, it can be noted that after ultrasonic rolling, the extension region forms many cleavage steps, which are caused by the high-density dislocations and lattice distortions generated by ultrasonic rolling [6,34]. During the process of crack extension, these cleavage steps will cause the crack band to break on the lattice planes, thereby inhibiting the extension of the crack band.…”

Section: Room Temperature Fatiguementioning

confidence: 99%

The effect of ultrasonic rolling on the fatigue performance of laser-welded TC4 titanium alloy joints

Jiahui,

Jiayuan,

Song

et al. 2023

Preprint

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In order to improve the fatigue performance of TC4 titanium alloy laser welded joints, ultrasonic rolling treatment was adopted in this study, and different passes of rolling process were used. The research results show that the ultrasonic rolling treatment significantly improves the fatigue limit and fatigue life of the weldment. At room temperature, the fatigue strength of the weldment increases by 2.04–4.58%, and the corrosion fatigue life increases by 1.71 to 3.05 times. This study also deeply analyzed the significant effects of ultrasonic rolling treatment on surface morphology, microstructure, surface residual stress and microhardness to reveal its strengthening mechanism. It was found that the ultrasonic rolling treatment shifted the crack initiation point to the subsurface and formed a hard layer with high residual stress on the surface by applying significant static pressure input and multiple treatments. This change makes the fatigue stripes narrower and denser. Compared with the traditional weld surface treatment method, ultrasonic rolling treatment significantly improves the surface quality and fatigue performance of TC4 titanium alloy laser welded joints.

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“…Thus, peening is a useful method of improving the fatigue life of components. Many researchers have studied the fatigue life of welded structures subjected to cyclic loads, as well as the changes in fatigue life and mechanical properties after surface treatments such as laser and ultrasonic peening [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Life Improvement of Weld Beads with Overlap Defects Using Ultrasonic Peening

et al. 2023

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Welding defects are common during the production of large welded structures. However, few studies have explored methods of compensating for clear welding defects without resorting to re-welding. Here, an ultrasonic peening method to compensate for the deteriorated mechanical properties of overlap weld defects without repair welding was studied. We experimentally investigated changes in the mechanical properties of defective welds before and after ultrasonic peening. The weld specimen with an overlap defect contained a large cavity-type defect inside the weld bead, which significantly reduced the fatigue life. When the surface of the defective test piece was peened, the fatigue life of the weld plate was restored, resulting in an equivalent or higher number of cycles to failure, compared to a specimen with a normal weld. The recovery of mechanical properties was attributed to the effect of surface work hardening by ultrasonic peening and the change in stress distribution. Thus, ultrasonic peening could compensate for the deterioration of mechanical properties such as tensile strength, fatigue life, and elongation due to overlap defects, without resorting to repair welding.

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Improving high cycle fatigue performance of gas tungsten arc welded Ti6Al4V titanium alloy by warm laser shock peening

Cited by 35 publications

References 53 publications

A Critical Review of Laser Shock Peening of Aircraft Engine Components

A Critical Review of Laser Shock Peening of Aircraft Engine Components

The effect of ultrasonic rolling on the fatigue performance of laser-welded TC4 titanium alloy joints

Fatigue Life Improvement of Weld Beads with Overlap Defects Using Ultrasonic Peening

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