Effects of ultrasonic shot peening on fatigue behavior of TA15 titanium alloy fabricated by laser melting deposition

Wu, Bin; Huang, Ji; Yang, Guang; Ren, Yuhang; Zhou, Siyu; An, Dong‐Aolei

doi:10.1016/j.surfcoat.2022.128769

Cited by 18 publications

(5 citation statements)

References 32 publications

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“…Due to the existence of macro defects in laser joints, the effective area undertaking the responsibility of structural material is dramatically decreased. Moreover, the presence of pores and cracks can greatly increase the sensitivity of the crack, which promotes its initiation and propagation [ 30 ]. Therefore, decreasing defects plays a vital role in improving the performance of laser joints.…”

Section: Resultsmentioning

confidence: 99%

“…The different effects of ALSP and SLSP processing on defects should be attributed to the weaker capability of ALSP on plastic deformation due to its deformation mechanism. Moreover, LSP processing has a significant effect on applying residual compressive stress within a considerable depth of material, which is beneficial for inhibiting the propagation of cracks [ 30 , 32 , 45 ]. The hybrid effects can help to increase the mechanical performance of the joint with macro defects.…”

Section: Resultsmentioning

confidence: 99%

“…As reported by Damon et al [ 29 ], shot peening could decrease 15–30% porosity of laser-melting material. Wu et al [ 30 ] also presented the effect of shot peening on hindering crack nucleation and propagation nearing pores. However, it is also inappropriate for applying shot peening in large parts due to the problem of collecting pellets and avoiding pollution.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Synchronized Laser Shock Peening on Decreasing Defects and Improving Microstructures of Ti-6Al-4V Laser Joint

Zhang

Ouyang

et al. 2023

Materials

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Repairing processing is a significant method for damaged high-cost Ti-6Al-4V components to decrease economic loss, which usually utilizes a welding technique. For a large-size structural component, welding processing is commonly completed in air conditioning, which makes it difficult to avoid welding defects. To this end, an appropriate matching technique is important for improving welding performance. In the present research, asynchronized laser shock peening (ALSP) and synchronized laser shock peening (SLSP) techniques were utilized to decrease the influence of macro welding defects on laser-welded Ti-6Al-4V joints. The results show that SLSP has a greater effect on inducing surface plastic deformation on Ti-6Al-4V joints with a pitting depth of more than 25 microns while ALSP can lead to a pitting depth of about 15 microns. Through micro-CT observation a long hot crack exists in the central area of as-welded joints with a length of about 2.24 mm, accompanied by lots of pores in different sizes on double sides. After ALSP processing, some pores are eliminated while others are enlarged, and one-side crack tips present closure morphology. However, some microcracks exist on the side-wall of hot cracks. With the influence of SLSP, significant shrinkage of pores can be observed and both sides of crack tips tend to be closed, which presents a better effect than ALSP processing. Moreover, greater effects of grain refinement and thermal stress release could be achieved by SLSP processing than ALSP, which can be ascribed to dynamic recrystallization. For the as-welded joint, the ultimate tensile strength (UTS) and elongation (EL) values are 418 MPa and 0.73%, respectively. The values of UTS and EL in the ALSP processed joint are increased to 437 MPa and 1.07%, which are 4.55% and 46.48% higher than the as-welded joint, respectively. Such values after SLSP processing are 498 MPa and 1.23%, which are 19.14% and 68.49% higher than the as-welded joint, respectively.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Synchronized Laser Shock Peening on Decreasing Defects and Improving Microstructures of Ti-6Al-4V Laser Joint

Zhang

Ouyang

et al. 2023

Materials

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“…Samples were fabricated on an AddSol D50 setup (AddSol, Moscow, Russia) equipped with a YLR-400-WC fiber laser (IPG Photonics, Russia) at a wavelength of 1070 nm, a Gaussian distribution spot with a diameter of 80 μm, and a construction volume represented by a cylinder with a diameter of 50 mm and a height of 150 mm. The samples were printed in a protective argon atmosphere (with a residual oxygen content of less than 100 ppm) at various SLM process parameters: at laser powers of 120, 150, 250 W and scanning speed with a step of 50 mm/s in a range from 350 to 800 mm/s for each laser power values, which corresponds to the intervals of typical modes for printing titanium alloys [ 27 , 28 ]. The remaining parameters were constant and the following: layer thickness 30 μm, hatching step 80 μm, laser scanning strategy in a checkerboard pattern with a rotation of 67° layer by layer ( Fig.…”

Section: Methodsmentioning

confidence: 99%

Selective laser melting of low-alloyed titanium based alloy with a large solidification range

Bautin,

Zadorozhnyy,

Korol

et al. 2024

Heliyon

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“…At higher surface roughness, the compact and uniform passive film formed is more likely to break down, thus causing an increase in the corrosion rate [44]. Wu B et al [45] investigated the effect of ultrasonic shot peening on the fatigue life of the titanium alloy Ti6Al2Zr1Mo1V (TA15). In the microstructure of USP-treated samples, a high density of dislocations and deformation twins appeared, restricting moving dislocations from reaching the free surface and delaying crack nucleation (as shown in Figure 5b), thereby reducing the rate of crack expansion.…”

Section: Shot Peeningmentioning

confidence: 99%

Hybrid Laser Additive Manufacturing of Metals: A Review

Yue,

Zhang,

Zheng

et al. 2024

Coatings

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Due to the unparalleled benefits of traditional processing techniques, additive manufacturing technology has experienced rapid development and continues to expand its applications. However, as industrial standards advance, the pressing needs for high precision, high performance, and high efficiency in the manufacturing sector have emerged as critical bottlenecks hindering the technology’s progress. Single-laser additive manufacturing methods are insufficient to meet these demands. This review presents a comprehensive exploration of metal hybrid laser additive manufacturing technology, encompassing various aspects, such as multi-process hybrid laser additive manufacturing, additive–subtractive hybrid manufacturing, multi-energy hybrid additive manufacturing, and multi-material hybrid additive manufacturing. Through a thorough examination of the principles of laser additive manufacturing technology and the concept of hybrid manufacturing, this paper investigates in depth the notable advantages of hybrid laser additive manufacturing technology. It provides valuable insights and recommendations to guide the development and research of innovative machining technologies.

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Effects of ultrasonic shot peening on fatigue behavior of TA15 titanium alloy fabricated by laser melting deposition

Cited by 18 publications

References 32 publications

Effect of Synchronized Laser Shock Peening on Decreasing Defects and Improving Microstructures of Ti-6Al-4V Laser Joint

Effect of Synchronized Laser Shock Peening on Decreasing Defects and Improving Microstructures of Ti-6Al-4V Laser Joint

Selective laser melting of low-alloyed titanium based alloy with a large solidification range

Hybrid Laser Additive Manufacturing of Metals: A Review

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