Welding of Ti-5Al-5Mo-5 V-1Cr-1Fe parts manufactured in the Electron Beam Melting

Madeja, Marcin; Karoluk, M.; Smolina, Irina

doi:10.1016/j.matdes.2020.108969

Cited by 9 publications

(5 citation statements)

References 24 publications

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“…Comparing these results with the SLMed samples’ results (as shown in Table 3 ), the mechanical properties of the aged samples demonstrate a higher tensile strength and elasticity modulus, but lower elongation than those of the SLMed samples. In addition, the mechanical properties of the aged samples in all orientations meet the aerospace allowable properties (YS of 1010 MPa and elongation of 8%) [ 19 , 23 ]. As is shown in Figure 4 b, the UTS, YS, and elongation values of the aged samples can be considered roughly the same.…”

Section: Resultsmentioning

confidence: 99%

“…Despite the widely studied α + β alloys such as the Ti-6Al-4V alloy [ 13 , 14 , 15 , 16 , 17 , 18 ], AM of near β-titanium alloys such as the Ti-55511 alloy has attracted less attention. There are some reports on the microstructure, crystallographic texture, dislocation density, and mechanical properties of the AMed Ti-55511 alloy, which are demonstrated in Table 1 [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ]. As is shown in this table, the AMed Ti-55511 alloy exhibits obvious anisotropy in mechanical properties both before and after the heat treatment.…”

Section: Introductionmentioning

confidence: 99%

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Anisotropy in the Tensile Properties of a Selective Laser Melted Ti-5Al-5Mo-5V-1Cr-1Fe Alloy during Aging Treatment

et al. 2022

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In this work, the anisotropic microstructure and mechanical properties of selective laser melted (SLMed) Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511) alloy before and after aging treatment are investigated. Owing to the unique thermal gradient, the prior columnar β grains with {001} texture component grow in the building direction, and the mechanical properties of the as-fabricated Ti-55511 alloy exhibit slight anisotropy. Aging treatment creates uniform precipitation of the α phase at the boundaries as well as the interior of β grains. Due to the microstructure of the aged samples with a weak texture, the mechanical properties exhibit almost isotropic characteristics with an ultimate tensile strength of 1133 to 1166 MPa, yield strength of 1093 to 1123 MPa, and elongation from 13 to 16%, which meet the aerospace allowable specification very well. By XRD and EBSD analyses, the total dislocation density of the aged samples (~134.8 × 1013 m−2) is significantly lower than that of the as-fabricated samples (~259.4 × 1013 m−2); however, the aged samples exhibit a higher geometrically necessary dislocation (GND) density (~28.5 × 1013 m−2) compared with the as-fabricated samples GND density (~2.9 × 1013 m−2). Thus, a new approach to strengthening theory for estimating the anisotropic mechanical properties of AM alloys is proposed.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Anisotropy in the Tensile Properties of a Selective Laser Melted Ti-5Al-5Mo-5V-1Cr-1Fe Alloy during Aging Treatment

et al. 2022

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“…Regarding additive manufactured materials, the welding of steel [14][15][16][17][18][19][20][21], titanium alloys [22][23][24][25][26][27], aluminum alloys [28][29][30], and Ni-based superalloys [12,31] have been reported. Regarding AM techniques, the welding of SLM parts [12,14,[16][17][18]20,24,[27][28][29][30][31], robotized laser/wire-directed energy deposition parts [15], binder jetting [19], electron beam melting [22,23,25], and wire arc AM [26] have been reported. Regarding welding methods, laser welding [12,[14][15][16]18,23,24,26,28,29,31], Tungsten Inert Gaz (TIG) welding…”

Section: Aisi 316l (316lmentioning

confidence: 99%

“…Regarding AM techniques, the welding of SLM parts [12,14,[16][17][18]20,24,[27][28][29][30][31], robotized laser/wire-directed energy deposition parts [15], binder jetting [19], electron beam melting [22,23,25], and wire arc AM [26] have been reported. Regarding welding methods, laser welding [12,[14][15][16]18,23,24,26,28,29,31], Tungsten Inert Gaz (TIG) welding [17,21,22], resistance spot welding [19], laser-arc hybrid welding [20], Friction Stir Welding (FSW) [25,28,29], and Electron Beam Welding (EBM) [27,30] have been tested. All of these studies show the weldability of additive manufactured components or heterogeneous welding (AM part with conventional part).…”

Section: Aisi 316l (316lmentioning

confidence: 99%

Laser Welding of AISI 316L Stainless Steel Produced by Additive Manufacturing or by Conventional Processes

Mokhtari

Pommier

Balcaen

et al. 2021

JMMP

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Among all the additive manufacturing techniques, Laser Powder Bed Fusion (LBPF), also called Selective Laser Melting (SLM), is the most common technique due to its high capability of building complex parts with generally improved mechanical properties. One of the main drawbacks of this technique is the sample size limitation, which depends on elaborating chamber dimensions. In this study, we investigate the viability of obtaining large parts with the laser welding of additive manufactured plates. A comparison of the microstructure and the tensile mechanical properties of SLM-welded plates and cold-rolled welded plates was performed. This paper shows the possibility of obtaining defect-free parts. Even if welding has a low impact on the microstructure of the SLM samples, fractures are located on the fusion zone, and a decrease in ductility of around 30% compared to the base metal is observed.

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“…It is characterised by its ability to operate short-term at temperatures of 750-800 °C, high strength (1080-1280 MPa), and high fracture toughness (66)(67)(68)(69)(70)(71)(72)(73)(74)(75)(76)(77) MPa-m 0.5 ) [12][13][14]. It can be heat treated and thermomechanically treated, thus affecting fatigue properties, tensile strength, and ductility [12,15,16] by obtaining a microstructure with a bimodal grain shape, an equiaxial grain shape, or the Widmanstätten structure with a lamellar grain shape [13,14,17]. In industry, the alloy is used for parts subjected to high mechanical stress, such as low-pressure compressor blade components, chassis components, and parts of the fuel system [18].…”

Section: Introductionmentioning

confidence: 99%

Speed function effects on properties of Ti-5Al-5Mo-5 V-1Cr-1Fe alloy manufactured by electron beam melting

Madeja,

Dziedzic

2023

Int J Adv Manuf Technol

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The speed function (SF) parameter, which is a unique combination of beam speed and beam current, is one of the most important parameters of the electron beam melting (PBF-EB) production process. It allows the same process conditions (size of the melt pool, process temperature, etc.) to be maintained for parts with different geometries and sizes. The aim of this research was to understand the effect of SF on the Ti-5Al-5Mo-5V-1Cr-1Fe alloy produced by electron beam melting technology. The results showed that increasing the SF from 86 to 116 resulted in a decrease in the average process temperature, a decrease in the length of the α phase plates, and change in the proportion of α and β phases from 53% (SF 86) to 50% (SF 116) of the β phases. Differences in microstructure (column diameters, thickness, and length of α-phase plates), phase composition, microhardness, porosity at the bottom, and top of the samples were observed on all samples. The mechanical property analysis did not show a significant effect of SF on elongation, but an increase in SF from 86 to 96 resulted in an increase in ultimate tensile strength (UTS) of approximately 7%, whilst an additional increase to 116 resulted in a decrease in UTS of approximately 8.5% compared to SF 96. From the results, it can be seen that the microstructural and mechanical properties of the material strongly depend on the SF. Based on it, SF 86 can be considered as the recommended value for the manufacture of Ti-55511 alloy parts.

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Welding of Ti-5Al-5Mo-5 V-1Cr-1Fe parts manufactured in the Electron Beam Melting

Cited by 9 publications

References 24 publications

Anisotropy in the Tensile Properties of a Selective Laser Melted Ti-5Al-5Mo-5V-1Cr-1Fe Alloy during Aging Treatment

Anisotropy in the Tensile Properties of a Selective Laser Melted Ti-5Al-5Mo-5V-1Cr-1Fe Alloy during Aging Treatment

Laser Welding of AISI 316L Stainless Steel Produced by Additive Manufacturing or by Conventional Processes

Speed function effects on properties of Ti-5Al-5Mo-5 V-1Cr-1Fe alloy manufactured by electron beam melting

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