FEA simulation of thermal processes during the direct metal laser sintering of Ti64 titanium powder

Živčák, Jozef; Šarik, Martin; Hudák, Radovan

doi:10.1016/j.measurement.2016.07.072

Cited by 19 publications

(10 citation statements)

References 17 publications

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“…The only possible answer for these boundary conditions is additive manufacturing technology. The powder of Ti6Al4V alloy is most commonly processed by direct metal laser sintering (DMLS) and selective laser melting (SLM) [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Influence of Build Orientation, Heat Treatment, and Laser Power on the Hardness of Ti6Al4V Manufactured Using the DMLS Process

Guzanová

Ižaríková

Brezinová

et al. 2017

Metals

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This contribution is focused on the influence of build orientation on hardness of materials sintered using direct metal laser sintering (DMLS) technology. It builds on the current research works that has monitored the influence of build orientation on a fatigue life, mechanical properties, roughness after machining, etc. In the mentioned work, a slight influence of build orientation on the above properties was shown. The hardness was measured on a Ti6Al4V alloy which was made of powder by DMLS technology. The individual materials were sintered at different laser powers, then annealed to remove internal stresses. Part of the experiment examined the metallographic analysis of materials in the direction perpendicular to the sintered layers and parallel with the sintered layers. Microhardness was measured on metallographic cross-sections and the results were statistically processed. The influence of laser power on a respective material hardness was assessed by one-way analysis of variance (ANOVA), a comparison of the hardness between sintered and sintered-annealed samples, as well as the comparison of hardness in the two considered directions was performed by t-test and F-test. A statistically significant difference in the hardness of the materials prepared at different laser powers was found. The influence of heat treatment, as well as the direction of material building also showed a statistically significant difference.

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Section: Introductionmentioning

confidence: 99%

Influence of Build Orientation, Heat Treatment, and Laser Power on the Hardness of Ti6Al4V Manufactured Using the DMLS Process

Guzanová

Ižaríková

Brezinová

et al. 2017

Metals

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“…In the case of investing in the renovation of a house and a renewable energy source such as EPC, this is doubly true. In the case of a stable alternative source of energy, for example, based on the production and use of hydrogen, this problem is not so striking [9][10][11][12][13][14][15][16][17].…”

Section: Figure 3 Heat Demand Vs Heat Consumption In the Apartment Hmentioning

confidence: 99%

Consumption Profile as a Base for Designing Res Using Simulation Tools

Tauš¹,

Koščo²,

Simon³

et al. 2019

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Nowadays, projecting of the renewable energy sources (RES) through simulation program is the very popular. In case usage RES in systems with stable consumption the simulations are sufficiently the exact. The problem arises, when it is necessary to simulate the supply from an unpredictable energy source to a system with unstable or unknown consumption. In particular, in residential buildings, it is very important to know the detailed consumption profile of heat and hot water consumers in the proper design of the RES. Underestimating its importance may lead to significant financial losses of the investor, user of RES technology.

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“…It is reported that PBF provides a good harmony between manufacturing cost and part quality [16,17]. In PBF process metal powders with different melt temperatures are fused by a high-power laser beam to build up complex geometries [18]. In this process, the component which has lower melting temperature fuses and makes an adjoin between metal powders [19,20].…”

Section: Introductionmentioning

confidence: 99%

“…In this process, the component which has lower melting temperature fuses and makes an adjoin between metal powders [19,20]. It is strongly emphasized that the accuracy of a part depends on careful selection of process parameters and unsuitable selection of process parameters will lead to part distortion, balling phenomena and dross formation [1,3,18,21,22]. The effective parameters of laser sintering can be divided into three general categories: process parameters, material parameters and environmental parameters [23].…”

Section: Introductionmentioning

confidence: 99%

“…Ž ivčák et al reported that lower scan speed of the laser beam leads to increasing melting depth and peak temperature. Also increasing in the number of manufactured layers causes increasing temperature if no preheating is in use [18]. Wang et al reported that the laser scanning speed and laser power are the most effective parameters on density of fabricated parts [22].…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of laser-assisted powder bed fusion of Fe-Cu powder mixture

Fatemi

Ashani

2017

Prog Addit Manuf

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Powder bed fusion is an additive manufacturing method which allows production of complex parts, in a shorter time compared to the conventional fabrication methods. During the last 60 years, Fe-Cu powders were widely used because of their anti-friction behavior and superior mechanical properties. Therefore, Fe-Cu powder has been selected as the basic material for the powder bed fusion process. In the present study, laser-assisted powder bed fusion of Fe-Cu powder mixture has been studied experimentally. Nd:YAG laser with a maximum power of 75 W has been used to melt the powder. The effects of volume fraction of the Cu powder in the mixture and applied energy density on thickness, surface concavity and geometrical accuracy of manufactured parts have been investigated. Results show that higher values of energy density lead to lower geometrical accuracy, higher thickness and surface concavity.

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FEA simulation of thermal processes during the direct metal laser sintering of Ti64 titanium powder

Cited by 19 publications

References 17 publications

Influence of Build Orientation, Heat Treatment, and Laser Power on the Hardness of Ti6Al4V Manufactured Using the DMLS Process

Influence of Build Orientation, Heat Treatment, and Laser Power on the Hardness of Ti6Al4V Manufactured Using the DMLS Process

Consumption Profile as a Base for Designing Res Using Simulation Tools

Experimental investigation of laser-assisted powder bed fusion of Fe-Cu powder mixture

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