Fatigue properties of selective laser melted Ti-6Al-4V alloy subjected to laser shock processing

Xin, Ruyi; Lan, Liang; Bai, Chengyan; Gao, Shuang; He, Bo; Wang, Jiang

doi:10.1007/s10853-022-07019-9

Cited by 14 publications

(3 citation statements)

References 38 publications

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“…These interactions can introduce pores and compromise both the formability of the layers and the resulting material properties. Furthermore, based on the literature survey [121][122][123][124][125][126][127][128][129][130][131][132][133][134][135][136], it becomes clear that the LSP deformation zone penetration (measuring 0.7 ± 0.20 mm) is adequate to achieve grain size refinement in laser-and electron beam-based DED as well as PBF. However, its impact is significantly limited in arc plasma-based DED due to the extensive deposition penetration [137][138][139] since the previously deposited layer is almost entirely remelted.…”

Section: Laser Shock Peeningmentioning

confidence: 99%

“…According to the literature surveyed [121][122][123][124][125][126][127][128][129][130][131][132][133][134][135][136], in most studies, the LSP was applied after part fabrication; i.e., as mechanical surface treatment, and its effect on fatigue life, quasi-static mechanical properties, corrosion resistance, and Fig. 14 a Laser shock peening (LSP) shockwaves generation [198], b free path planning [199], and c intermittent LSP process coupled to laser PBF [143] residual stress relief was evaluated.…”

Section: Laser Shock Peeningmentioning

confidence: 99%

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Directed energy deposition + mechanical interlayer deformation additive manufacturing: a state-of-the-art literature review

Farias,

dos Santos,

Oliveira

2024

Int J Adv Manuf Technol

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Directed energy deposition (DED) additive manufacturing systems have been developed and optimized for typical engineering materials and operational requirements. However, parts fabricated via DED often demonstrate a diminished material response, encompassing inferior mechanical properties and heat treatment outcomes compared to traditionally manufactured components (e.g., wrought and cast materials). As a result, parts produced by DED fail to meet stringent specifications and industry requirements, such as those in the nuclear, oil and gas, and aeronautics sectors, potentially limiting the industrial scalability of DED processes. To address these challenges, systems integrating DED with interlayer (cold or hot) mechanical deformation (e.g., rolling and hammering/peening, forging) have been developed. These systems refine the microstructure, mitigate the typical crystallographic texture through static and/or dynamic recrystallization, and enhance mechanical properties and heat treatment responses without altering material specifications. In this regard, the present state-of-the-art review reports the DED + interlayer mechanical deformation systems and their variants, and their potential and limitations, providing a critical analysis to support the development and adaptation of this technology to overcome the process and material limitations that currently prevent the large-scale industrial adoption of DED processes. Furthermore, a detailed description of the grain size refinement mechanisms induced by interlayer mechanical deformation and their respective effects on the mechanical properties of commonly used 3D-printed engineering alloys (e.g., Ti-6Al-4V, Inconel 718, various low-alloy steels, AISI 316L stainless steel, and Al-based series 2xxx) is comprehensively analyzed.

show abstract

Section: Laser Shock Peeningmentioning

confidence: 99%

Section: Laser Shock Peeningmentioning

confidence: 99%

Directed energy deposition + mechanical interlayer deformation additive manufacturing: a state-of-the-art literature review

Farias,

dos Santos,

Oliveira

2024

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…Laser shock peening (LSP) is a surface modification method that uses a high-energy laser beam to generate high-pressure plasma to alter the material and generate residual compressive stress on the surface and subsurface that is beneficial to the fatigue performance of the part [5][6][7][8][9][10]. Compared to the typical shot-peening procedure, the residual compressive stress layer that is generated has significant depth and has little influence on surface roughness [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Residual Stress Field and Improvement of Fatigue Properties of Thin-Walled Pipes by Filling Laser Shock Peening

Wang

Zhao

et al. 2022

Metals

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In the present work, a filling and laser shock peening (LSP) method is put forward and applied to a thin-walled pipe. Specimens were experimentally and numerically investigated to identify the residual stress field and fatigue properties of a pipe with and without LSP treatment. The numerical simulation indicated that the residual compressive stress first increased and subsequently dropped as the laser power density increased, and the extent of influence of the stretching wave, reflected from the lower surface on the unloaded area, increased with the spot diameter, causing surface tensile stress in the unloaded area. By filling the pipe with the guided-wave material, the residual stress field of the pipe that was treated with LSP was optimized, and the influence of the stress wave reflection on the residual stress field was effectively decreased. The surface residual stress of the filled guided wave material was −326 MPa, improving it by 57.6% compared with the pipe not filled with guided wave materials. The fatigue life of the pipe with the filled waveguide material that was treated by LSP was extended by 48.9%, compared with the untreated pipe.

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Improving mechanical properties of additively manufactured H13 steel through residual stress modulation by laser shock peening

Guo,

Liu

2024

Int J Adv Manuf Technol

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Fatigue properties of selective laser melted Ti-6Al-4V alloy subjected to laser shock processing

Cited by 14 publications

References 38 publications

Directed energy deposition + mechanical interlayer deformation additive manufacturing: a state-of-the-art literature review

Directed energy deposition + mechanical interlayer deformation additive manufacturing: a state-of-the-art literature review

Optimization of Residual Stress Field and Improvement of Fatigue Properties of Thin-Walled Pipes by Filling Laser Shock Peening

Improving mechanical properties of additively manufactured H13 steel through residual stress modulation by laser shock peening

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