Microstructural analysis of selective laser melted Ti6Al4V modified by laser peening and shot peening for enhanced fatigue characteristics

Slawik, Sebastian; Bernarding, Simon; Lasagni, Fernando; Navarro, C.; Periñán, Antonio; Boby, Francisco; Migot-Choux, Sylvie; Domı́nguez, J.; Mücklich, Frank

doi:10.1016/j.matchar.2021.110935

Cited by 39 publications

(8 citation statements)

References 53 publications

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“…In light of the intricate interplay between fatigue performance and microstructure, several researchers have employed conventional shot peening to delve into the connections among microstructure, grain orientation, grain boundary changes in the alloy, and fatigue properties. Their findings underscore the significant role of microstructure characterization in the exploration of surface strengthening [17][18][19][20][21][22][23]. However, research concerning the effects of USP on TC17 alloy remains relatively limited.…”

Section: Introductionmentioning

confidence: 95%

Effect of surface strengthening by ultrasonic shot peening on TC17 alloy

Tan,

Cai,

et al. 2024

Surf. Topogr.: Metrol. Prop.

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This paper investigates the effects of ultrasonic shot peening (USP) on surface morphology, microstructure, and residual stress field distribution of TC17 alloy under different process parameters. The aim is to reveal the surface strengthening mechanism of TC17 alloy caused by USP. The results suggest that the use of the 2.5 mm projectile diameter leads to an increase in surface roughness, plastic deformation, and a deeper grain refinement layer compared to the 1.5 mm projectile diameter. Additionally, it results in a greater depth of the compressive residual stress layer and maximum compressive residual stress. The crack initiation sites under two projectile diameters are located below the compressive residual stress layer. The USP treatment introduces compressive residual stress on the surface, inhibiting the initiation of surface cracks, and the deeper compressive residual stress layer offsets the early fatigue failure caused by higher roughness.

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Section: Introductionmentioning

confidence: 95%

Effect of surface strengthening by ultrasonic shot peening on TC17 alloy

Tan,

Cai,

et al. 2024

Surf. Topogr.: Metrol. Prop.

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“…Anuwar et al [11] also noted that low altitude flying aircraft components made from Ti-6Al-4V experiences hot corrosion attack while flying across the sea, which is abundant in NaCl. It the context of preventive measures for hot corrosion, it was observed that several surface modification techniques such as Hot Isostatic Pressing (HIPing) [12], laser shock peening [13,14], surface coating [15], shot peening [16], ultrasonic peening [9] and electrochemical processing [17] help in mitigating hot corrosion damage caused by NaCl. The subsurface modification depth in these techniques can range from few μm to mm [18].…”

Section: Introductionmentioning

confidence: 99%

Effect of abrasive water jet peening on NaCl-induced hot corrosion behavior of Ti–6Al–4V

Chakkravarthy¹,

Oliveira²,

Mahomed³

et al. 2023

Vacuum

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“…These are better surface finish, higher depths of residual stress, and uniform distribution of intensity [33]. After laser shot peening, fatigue strength increases [34], both for additively and classically manufactured elements [35]. It is possible to effectively promote surface grain refinement and induce a deep compressive residual stress field in Inconel 718 samples [36].…”

Section: Introductionmentioning

confidence: 99%

Selected Properties of the Surface Layer of C45 Steel Samples after Slide Burnishing

Skoczylas,

Kłonica

2023

Materials

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This paper presents the experimental results of a study investigating the impact of the machining fluid type, the variable factor, used in slide burnishing on 2D and 3D surface roughness; surface topography; Abbott–Firestone curve shape; microhardness; and SFE (surface free energy). In the experiment, pre-ground, ringed samples of C45 steel were used. The results showed an over eight-fold decrease in the value of the Ra (arithmetical mean deviation) parameter and over a five-fold decrease in the Rt (total height of profile) parameter in relation to their values after grinding. The parameters Rpk (reduced peak height), Rk (core roughness depth), and Rvk (reduced valley depth) were also reduced. The Abbott–Firestone curve after slide burnishing changed its angle of inclination (it was more flattened), and the material ratio Smr increased. The reduction in the Rpk and Rk parameters and increased material ratio will most likely contribute to restoring the functionality of these surfaces (increased resistance to abrasive wear). After slide burnishing, the maximum 25% increase in microhardness was obtained compared to the value after grinding, while the layer thickness was 20 μm. The surface energy of elements subjected to slide burnishing using various machining fluids slightly increased, or its value was close to that of the ground surface. The most favourable properties of the surface layer in terms of mating between two elements were obtained for a part that was slide-burnished with a mixture of oil + polymethyl methacrylate (PMM) + molybdenum disulphide (MoS2).

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Microstructural analysis of selective laser melted Ti6Al4V modified by laser peening and shot peening for enhanced fatigue characteristics

Cited by 39 publications

References 53 publications

Effect of surface strengthening by ultrasonic shot peening on TC17 alloy

Effect of surface strengthening by ultrasonic shot peening on TC17 alloy

Effect of abrasive water jet peening on NaCl-induced hot corrosion behavior of Ti–6Al–4V

Selected Properties of the Surface Layer of C45 Steel Samples after Slide Burnishing

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