Investigation and Modeling of the Process of Formation of the Pad Weld and its Microstructure during Laser Cladding by Radiation of High Power Fiber Laser

Turichin, Gleb; Somonov, Vladislav; Klimova-Korsmik, Olga

doi:10.4028/www.scientific.net/amm.682.160

Cited by 16 publications

(5 citation statements)

References 6 publications

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“…One of the main prerequisites for the DLD process [44] was the stability of the printed object formation process. In the implemented method, process stability was based on the principle of self-adjustment of the deposited layer heights.…”

Section: Dld Processmentioning

confidence: 99%

Inconel 625/TiB2 Metal Matrix Composites by Direct Laser Deposition

Promakhov

Жуков

Зиатдинов

et al. 2019

Metals

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This work presents results in the field of synthesis of new metal matrix composites with matrix NiTi and particles TiB 2 , and their use as additives to fabricate metal matrix composites based on the Inconel 625 alloy. NiTi-TB 2 powders were obtained using self-propagating high-temperature synthesis. Composite NiTi-TiB 2 particles were spheroidized on a high-frequency induction plasmatron. Composite NiTi-TB 2 particles were mixed with metallic Inconel 625 powder with particle sizes of 50-150 µm. We used direct laser deposition by means of mixture of powders to grow samples with different contents of ceramics in the metal matrix. The process of direct laser deposition during the experiment was investigated. We have determined the peculiarities of the formation of the structure in metal matrix composites with different contents of titanium diboride. We have demonstrated the possibility of using Direct Laser Deposition (DLD) for fabricating items from ceramic metal materials. We have determined promising fields of further research for the purpose of obtaining efficient metal matrix composites using additive manufacturing technologies.

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Section: Dld Processmentioning

confidence: 99%

Inconel 625/TiB2 Metal Matrix Composites by Direct Laser Deposition

Promakhov

Жуков

Зиатдинов

et al. 2019

Metals

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“…Finite element analysis allows scientists to take these factors into account, but the calculation time can be hours, or even days. The presented work is a development of the model developed earlier in [ 6 , 7 , 14 , 15 ]; it was developed specifically for modeling the process of forming thin-walled structures. This model takes into account the Marangoni effect, the transfer of the powder by a gas jet, the heating of the powder by laser radiation, the interaction of the jet with the substrate, and heat transfer in the solid and liquid phases, as well as the hydrodynamics of the melt pool.…”

Section: Introductionmentioning

confidence: 99%

Computer Simulation of Hydrodynamic and Thermal Processes in DLD Technology

et al. 2021

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This article deals with the theoretical issues of the formation of a melt pool during the process of direct laser deposition. The shape and size of the pool depends on many parameters, such as the speed and power of the process, the optical and physical properties of the material, and the powder consumption. On the other hand, the influence of the physical processes occurring in the material on one another is significant: for instance, the heating of the powder and the substrate by laser radiation, or the formation of the free surface of the melt, taking into account the Marangoni effect. This paper proposes a model for determining the size of the melt bath, developed in a one-dimensional approximation of the boundary layer flow. The dimensions and profile of the surface and bottom of the melt pool are obtained by solving the problem of convective heat transfer. The influence of the residual temperature from the previous track, as well as the heat from the heated powder of the gas–powder jet, taking into account its spatial distribution, is considered. The simulation of the size and shape of the melt pool, as well as its free surface profile for different alloys, is performed with 316 L steel, Inconel 718 nickel alloy, and VT6 titanium alloy

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“…In addition,the samples were tested forimpact-bending test and wedge shaped test with pendulum machine RKP 450. Impact bending test on the samples were carried out in accordance with GOST 6996-66 standard at a temperature of -40°C [7][8].…”

Section: Materials and Research Methodicmentioning

confidence: 99%

Research of Mechanical Properties of Cold Resistant Steel 09CrNi2MoCu after Direct Laser Deposition

Bistrova

Shirokina

Mendagaliev

et al. 2019

KEM

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Review focuses on describing of mechanical properties of the components manufactured via direct laser depositionfrom cold resistant steel material. The results of tensile and impact testing are presented and microstructures of the fractures are shown. The process of laser deposition of cold-resistant steels, the formation of structures, as well as the mechanical properties of these samples are poorly understood. The results of tensile and impact tests are presented, and microstructures are shown. Mechanical tests for impact strength were carried out at a temperature of -40˚С, with different laser radiation powers. The results are given using the as-received powder, as well as used powder with a different mixing ratio, and the results are analyzed. As a result of the study, it was found that the fractional composition of the 09XH2MD alloy powder affects the mechanical characteristics of samples obtained by direct laser deposition. The effect of recycled powder on the mechanical properties of the obtained samples is given, the optimal laser deposition regimes are selected

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Investigation and Modeling of the Process of Formation of the Pad Weld and its Microstructure during Laser Cladding by Radiation of High Power Fiber Laser

Cited by 16 publications

References 6 publications

Inconel 625/TiB2 Metal Matrix Composites by Direct Laser Deposition

Inconel 625/TiB2 Metal Matrix Composites by Direct Laser Deposition

Computer Simulation of Hydrodynamic and Thermal Processes in DLD Technology

Research of Mechanical Properties of Cold Resistant Steel 09CrNi2MoCu after Direct Laser Deposition

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