The effect of process parameters on mechanical behavior of selective laser melted Ti6Al4V alloy

Liović, David; Franulović, Marina; Kozak, Dražan

doi:10.1016/j.prostr.2023.06.008

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…The notch effect reduces the loading capacity, which makes it a crucial parameter when calculating the mechanical strength of components or constructions. It refers to the phenomenon where a small geometric discontinuity or a notch in a component can significantly increase the local stress, leading to a reduction in the component's strength and fatigue life [42][43][44]. The presence of a notch can create a localised stress concentration, which can initiate crack propagation and eventually lead to the failure of the component, even under relatively low applied loads [45,46].…”

Section: Effect Of Structure Typementioning

confidence: 99%

Tensile Properties of Four Types of ABS Lattice Structures—A Comparative Study

Monkova,

Monka,

Hricová

et al. 2023

Polymers

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This article aims to compare the behaviour of four types of lattice structures named Cartesian, Rhomboid, Octagonal, and Starlit under tensile stress loading. The structures were made of Acrylonitrile Butadiene Styrene (ABS) material using the Fused Filament Fabrication (FFF) technique with three different specific volumes (24, 42, and 60%). Five samples of each type were produced, and a total of 60 samples were tested. Experimental testing was performed according to EN ISO 527-1:2012 and EN ISO 527-2:2012. The obtained data were statistically processed, while no outliers were identified. The experimental results pointed out that the specimens’ topology, together with the specific volume, very significantly affected the resultant ABS properties of the tested samples made of the same material. The comparative study showed that in terms of ultimate strength, yield strength, and Young’s modulus, the Cartesian structure appeared to be the most suitable for tensile stress, and the least suitable structure was the Rhomboid structure. On the other hand, the Rhomboid-type of the structure showed not only the highest amount of absorbed energy but also the highest toughness among the investigated lattice structures, so in the near future, its behaviour under an impact test should be studied.

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Section: Effect Of Structure Typementioning

confidence: 99%

Tensile Properties of Four Types of ABS Lattice Structures—A Comparative Study

Monkova,

Monka,

Hricová

et al. 2023

Polymers

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“…Moreover, final microstructures may also vary based on the specific parameter setting used in the printing process. Laser power, scanning speed, scanning strategy, layer thickness applied, and many other parameters affect the properties of the melt pool, and therefore the melting/solidification process [8]. Generally, additional heat treatment is applied after printing the Ti-Al6-V4 alloy by PBF-LB/M.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Embrittlement of Ti-Al6-V4 Alloy Manufactured by Laser Powder Bed Fusion Induced by Electrochemical Charging

Roudnicka,

Kacenka,

Dvorsky

et al. 2024

Metals

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The 3D printing of Ti-Al6-V4 alloy is subject to much current investigation, with Laser Beam Powder Bed Fusion (PBF-LB/M) being one of the most applied technologies. Ti-Al6-V4 alloy, despite its great material properties, is susceptible to hydrogen penetration and consequent embrittlement. The level of susceptibility to hydrogen penetration depends on the microstructural state of the alloy. In this work, we compare the effect of electrochemical charging by hydrogen on Ti-Al6-V4 alloy prepared by PBF-LB/M, either in the as-built state or annealed, and conventionally prepared alloy. At the same charging conditions, considerably different hydrogen concentrations were achieved, with the as-built 3D-printed material being the most susceptible. The changes in mechanical properties are discussed in relation to changes in microstructure, studied using microscopy, X-ray, and electron diffraction techniques.

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