Heat Treatment of Corrosion Resistant Steel for Water Propellers Fabricated by Direct Laser Deposition

Mendagaliev, R.V.; Klimova-Korsmik, Olga; Promakhov, Vladimir; Schulz, Nikita; Жуков, А. В.; Klimenko, V. A.; Olisov, A.V.

doi:10.3390/ma13122738

Cited by 15 publications

(13 citation statements)

References 29 publications

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“…The direct laser deposition (DLD) process, according to the classification considered in [ 1 ], is currently becoming a more and more promising technology for the additive production of parts for various purposes in shipbuilding, aircraft construction, mechanical engineering, and other industries. There is already a positive experience in the manufacture of ship fittings, propellers [ 2 , 3 ], water jet propellers [ 4 , 5 ], large-sized products and machine parts [ 6 ], high-pressure vessels, and others. This technology belongs to the direct metal deposition (DMD) technologies, in which the product is formed from a metal powder supplied by a gas jet directly into the area of action of focused laser radiation.…”

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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Section: Introductionmentioning

confidence: 99%

Computer Simulation of Hydrodynamic and Thermal Processes in DLD Technology

et al. 2021

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“…The main experiment parameters, laser power (P, in Watts) and laser scanning speed (υ, in mm/s), the scan direction is the x-axis, were determined from the analysis of the literature [15][16][17][18][19][20][21]. Based on the selected value range for P and υ (P ranged from 170 to 270 W, υ ranged from 750 to 1150 mm/s), a matrix of cube-shaped samples was built (with the size of 7 × 7 × 5 mm) for further metallographic studies for finding pores on the surface.…”

Section: Materials Gradementioning

confidence: 99%

Researching the Properties of Samples Fabricated Using Selective Laser Melting from A High-Temperature Nickel-Based Alloy

Mazalov¹,

Shmatov

Zelenina³

et al. 2021

Applied Sciences

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A possible application of a metal powder composition made of a high-temperature nickel-based alloy with high heat strength (the material is analogous to Inconel 718) in selective laser melting (SLM, an additive manufacturing technology) was considered. Peculiarities of material formation in the course of selective laser melting of the metal have been researched, and the mechanical properties of the material were determined. The effect of the thermal treatment mode on the mechanical characteristics was investigated. It was shown that the tensile strength of samples made of a high-temperature nickel alloy when the samples have not been subjected to thermal treatment is ~950 MPa; samples subjected to thermal treatment is ~1070 MPa.

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“…Interesting applications for LMD are to improve the wear or corrosion resistance of surface parts [ 17 ] and their use to repair damaged surfaces [ 18 , 19 ]. Tool and die lifetimes can be extended, adding over their surface new layers or repairing their surface with the LMD process [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Direct Generation of High-Aspect-Ratio Structures of AISI 316L by Laser-Assisted Powder Deposition

Alvarez¹,

Montealegre²,

Cordovilla

et al. 2020

Materials

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The effect of process parameters and the orientation of the cladding layer on the mechanical properties of 316L stainless steel components manufactured by laser metal deposition (LMD) was investigated. High aspect-ratio walls were manufactured with layers of a 4.5 mm wide single-cladding track to study the microstructure and mechanical properties along the length and the height of the wall. Samples for the tensile test (according to ASTM E-8M-04) were machined from the wall along both the direction of the layers and the direction perpendicular to them. Cross-sections of the LMD samples were analyzed by optical and scanning electron microscopy (SEM). The orientation of the growing grain was observed. It was associated with the thermal gradient through the building part. A homogeneous microstructure between consecutive layers and some degree of microporosity was observed by SEM. Uniaxial tension tests were performed on samples extracted from the wall in perpendicular and parallel directions. Results for ultimate tensile strength were similar in both cases and with the wrought material. The σ0.2 were similar in both cases but slightly superior to the wrought material.

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Heat Treatment of Corrosion Resistant Steel for Water Propellers Fabricated by Direct Laser Deposition

Cited by 15 publications

References 29 publications

Computer Simulation of Hydrodynamic and Thermal Processes in DLD Technology

Computer Simulation of Hydrodynamic and Thermal Processes in DLD Technology

Researching the Properties of Samples Fabricated Using Selective Laser Melting from A High-Temperature Nickel-Based Alloy

Direct Generation of High-Aspect-Ratio Structures of AISI 316L by Laser-Assisted Powder Deposition

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