3D thermal finite element analysis of laser cladding processed Ti-6Al-4V part with microstructural correlations

Tran, Hoang Son; Tchuindjang, Jérôme Tchoufack; Paydas, Hakan; Mertens, Anne; Jardin, Ruben Antonio Tomé; Duchêne, Laurent; Carrus, Raoul; Lecomte-Beckers, Jacqueline; Habraken, Anne

doi:10.1016/j.matdes.2017.04.092

Cited by 64 publications

(38 citation statements)

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“…Some numerical studies consider each welding seam as rectangular cross-sections [11,12,19]. In the present investigation, a realistic simplified semi-circular cross section was modelled in MSC Marc for the first layers, followed by a sickle-shape for the subsequent layers, each shifted by the resulting offset relative to the previous position.…”

Section: Boundary Conditionsmentioning

confidence: 99%

“…On the other hand, additive technologies, such as WAAM or wire laser metal deposition (LMD-W), can also be modelled by a Finite Element (FE) method based on the element-birth technique, for the determination of real temperature fields and residual stresses. The focus for this simulation of the WAAM process has been on calculating temperature distribution, displacement of components and residual stresses [11][12][13][14][15][16]. The focus of this paper is not on powder-bed methods.…”

Section: Introductionmentioning

confidence: 99%

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Thermo-Mechanical Modelling of Wire-Arc Additive Manufacturing (WAAM) of Semi-Finished Products

Graf

Hälsig

Höfer

et al. 2018

Metals

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Additive manufacturing processes have been investigated for some years, and are commonly used industrially in the field of plastics for small- and medium-sized series. The use of metallic deposition material has been intensively studied on the laboratory scale, but the numerical prediction is not yet state of the art. This paper examines numerical approaches for predicting temperature fields, distortions, and mechanical properties using the Finite Element (FE) software MSC Marc. For process mapping, the filler materials G4Si1 (1.5130) for steel, and AZ31 for magnesium, were first characterized in terms of thermo-physical and thermo-mechanical properties with process-relevant cast microstructure. These material parameters are necessary for a detailed thermo-mechanical coupled Finite Element Method (FEM). The focus of the investigations was on the numerical analysis of the influence of the wire feed (2.5–5.0 m/min) and the weld path orientation (unidirectional or continuous) on the temperature evolution for multi-layered walls of miscellaneous materials. For the calibration of the numerical model, the real welding experiments were carried out using the gas-metal arc-welding process—cold metal transfer (CMT) technology. A uniform wall geometry can be produced with a continuous welding path, because a more homogeneous temperature distribution results.

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Section: Boundary Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermo-Mechanical Modelling of Wire-Arc Additive Manufacturing (WAAM) of Semi-Finished Products

Graf

Hälsig

Höfer

et al. 2018

Metals

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“…Yang et al [3] studied the heat affected zone while Wang et al [4] analyzed the melt pool. Kong et al [5] investigated the effect of different processing parameters on the deposit height while Tran et al [6] focused on the evolution of the microstructure in the deposit. However, works focusing on the solidification of thick HSS deposits processed by DED are innovative.…”

Section: Introductionmentioning

confidence: 99%

Thermal histories and microstructures in Direct Energy Deposition of a High Speed Steel thick deposit

et al. 2019

Self Cite

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The results of 2D Finite Element thermal simulations of Direct Energy Deposition of a High Speed Steel thick deposit explain the observed microstructural heterogeneities over the whole height of a 36layer deposit. The Finite Element model is validated by the recorded substrate temperature and the melt pool depth of the last clad layer experimentally measured. The correlation between the computed thermal fields and the microstructures of three points of interest located at different depths within the deposit is carried out. The effect of both the melt superheating temperature and the thermal cyclic history on the carbides type, shape and size is discussed.

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“…The 316L stainless steel powder absorbs abundant energy of the laser beam and forms a molten pool that joins adjacent scanning tracks, and the heat dissipates during this process mainly through conduction, convection, and radiation. The temporal and spatial distribution of the temperature field satisfies the classical Fourier heat conduction equation [16]:…”

Section: Description Of 3d Thermal Finite Element Modelmentioning

confidence: 99%

3D Thermal Finite Element Analysis of the SLM 316L Parts with Microstructural Correlations

Zhao

2018

Complexity

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In this study, a multitrack and multilayer finite element model was developed to simulate the temperature field and molten pool contours during selective laser melting (SLM) of 316L stainless steel powder under different scanning strategies. The simulated temperature field and its evolution over time were compared with experimental measurement results. Furthermore, a correlation was established by the presented results between the predicted thermal behavior and the microstructure of SLM specimens. It was found that the maximum temperature of the molten pool rose slightly with the increase of scanning tracks, but when laser scanned multilayer, the maximum temperature rose first and then decreased. There are large columnar crystals in molten pools, growing in the direction of the maximum temperature gradient. The microstructure defects are more likely to occur at the bonding regions between adjacent layers and islands, where the heat and stress are concentrated. Moreover, the results also showed that the scanning strategy affects the microstructure and microhardness. Also, the SLM 316L parts under the S-shaped strategy had finer grains and a higher Vicker hardness than that formed under the island strategy.

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3D thermal finite element analysis of laser cladding processed Ti-6Al-4V part with microstructural correlations

Cited by 64 publications

References 50 publications

Thermo-Mechanical Modelling of Wire-Arc Additive Manufacturing (WAAM) of Semi-Finished Products

Thermo-Mechanical Modelling of Wire-Arc Additive Manufacturing (WAAM) of Semi-Finished Products

Thermal histories and microstructures in Direct Energy Deposition of a High Speed Steel thick deposit

3D Thermal Finite Element Analysis of the SLM 316L Parts with Microstructural Correlations

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