Laser-controlled synthesis of nickel-aluminum intermetallic compounds

Kamashev, A. V.; Panin, A. S.; Петров, А. С.; Shishkovskii, I. V.

doi:10.1134/1.1383837

Cited by 14 publications

(7 citation statements)

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“…Within the first approach, the preliminary addition of the strengthening pre-alloying intermetallic particles in the powder mixture occurs before the LAM process [12]. We experimentally approved [19][20][21][22][23] and theoretically substantiated [24] another approach for the selective laser sintering and the cladding in the Ti-Ni, Ti-NiTi, Ti-Al, Ni-Al, Fe-Ti systems where the strengthened intermetallide are created directly within the LAM process in the metallic matrix due to the synthesis reaction. The laser beam (LB) initiates a chemical reaction between the particles into the powder mixture of stoichiometric composition, thus leading to intermetallic phase creation, and excess substance (deviation from the stoichiometry) aggregate in the material matrix.…”

Section: Introductionmentioning

confidence: 99%

Intermetallics Synthesis in the Fe–Al System via Layer by Layer 3D Laser Cladding

et al. 2013

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Abstract:Intermetallide phase formation was studied in a powdered Fe-Al system under layer by layer laser cladding with the aim of fabricating the gradient of properties by means of changing the Fe-Al concentration ratio in the powder mixture from layer to layer. The relationships between the laser cladding parameters and the intermetallic phase structures in the consecutively cladded layers were determined. In order to study the structure formation an optical microscopy, X-ray diffraction analysis, measurement of microhardness, scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) spectroscopy analysis were used after the laser synthesis of intermetallic compounds.

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Section: Introductionmentioning

confidence: 99%

Intermetallics Synthesis in the Fe–Al System via Layer by Layer 3D Laser Cladding

et al. 2013

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“…Earlier, we experimentally approved the layerwise SLM and DMD processes in the Ni + Al system [9,13,35,41] and theoretically substantiated [53] the approach, where the strengthened intermetallides are created directly within the laser-assisted AM process in the Ni metallic matrix due to the synthesis reaction.…”

Section: Experimental Scheme Layerwise Fabrication Of the Fg Nickel Amentioning

confidence: 66%

“…Last decade, specific types of studies were devoted to combination of the self-propagated hightemperature synthesis (SHS) and rapid prototyping approaches, which allow synthesized and 3D part fabricated in situ nickel aluminide phases [13,28,31,32,35,37]. The experimental parameters controlling the ignition step such as an ignition time, a width of the exothermic reaction zone, and an adiabatic temperature were calculated as a function of initial stoichiometry for different Ni x Al y phases.…”

Section: The Nickel Superalloy Using At the Additive Technologiesmentioning

confidence: 99%

Comparison of Additive Technologies for Gradient Aerospace Part Fabrication from Nickel-Based Superalloys

Shishkovsky¹,

Назаров²,

Kotoban³

et al. 2015

Superalloys

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In our papers, the laser beam-aided control of the self-propagating high-temperature synthesis in Ni Al systems for the layerwise manufacture of three-dimensional D parts was offered and experimentally realized. As for the laser in situ synthesis of NiAl and Ni Al intermetallides and their layerwise laser cladding without any visible cracks and pores, it was successfully performed later on. The present chapter is dedicated to the comparison of optimal conditions for the selective laser melting and laser direct metal deposition processes of the nickel-based powders and fabrication of a full-density, functionally graded, and crack-free structures on the maximum deposition rate for technological applications. The effects of laser parameters on the phase composition and microstructure of the resulting intermetallic samples will be discussed.The possibility of controlling to change the hardness of the gradient structures from layer to layer by changing of the powder composition and by using the reinforced intermetallic inclusions into superalloy matrix widens the range of possible applications of D parts in aerospace and nuclear industries. Comparing different methods of additive manufacturing reveals their advantages and disadvantages for making large samples, scalability, and customizability, finding ways to control the distribu- tion of residual stresses and specified grain-growth direction for the fabrication of more functional and high-precision samples.Keywords: Selective laser melting SLM , direct metal deposition DMD , nickelbased superalloy, laser-controlled reaction synthesis, functional graded FG intermetallic structures, nickel aluminide . IntroductionThe range of use of nickel superalloys is diverse and covers gas turbines of air, sea, and road transport and industrial turbines for electro-or gas-pumping stations, rocket motors, automatic spacecrafts, and nuclear reactors. The basic units of the turbines where nickel-based superalloys could be used are combustion chambers, guide blades in nozzles, rotor blades, and turbine disks. It is known that with the temperature rise by every ° at the turbine inlet, the increase in efficiency is about %. Therefore, the determination to use these heat-resistant nickel superalloys is reasonable and well grounded [ ].In addition to heat resistance, the materials for the turbine blades are required to be creep resistive to possess lasting plasticity, resistance to gas corrosion and oxidation, high strength, fluidity, and viscosity. This is why the nickel superalloys are mainly used for turbine blades and disks.Five mechanisms are known for the strengthening of superalloys. They are solid solution, dispersion, grain boundary, deformation, and textural strengthening [ , ]. The first three ones depend on the alloy nature. In nickel-based alloys, strengthening occurs essentially by the dispersive mechanism due to the Ni Al, Ti phase release. The phase with the L Ni Al superlattice is the basis for the fabrication of the promising superalloys of a new generation on t...

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“…As was noted in Section 11.2, we experimentally approved the layerwise laser melting and cladding process in the Me + Al (Me ¼ Ti, Ni or Fe) systems [4,12,[20][21][22] and theoretically substantiated [23] the approach, where the strengthened intermetallide is created directly within the LAM process in the metallic matrix due to the synthesis reaction. Nickel aluminides NiAl and Ni 3 Al are characterized by high heat resistance, including the conditions of high-temperature gas flows.…”

Section: Thermophysical Estimations and Fractal Behavior For Laser-comentioning

confidence: 85%

“…[12] (see Section 11.3.3 also) and theoretical assessments in Ref. X-ray phase analysis (XRD) results reported in Ref.…”

Section: Thermophysical Estimations and Fractal Behavior For Laser-comentioning

confidence: 97%

Laser-controlled intermetallics synthesis during surface cladding

Shishkovsky¹

2015

Laser Surface Engineering

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Laser-controlled synthesis of nickel-aluminum intermetallic compounds

Cited by 14 publications

References 0 publications

Intermetallics Synthesis in the Fe–Al System via Layer by Layer 3D Laser Cladding

Intermetallics Synthesis in the Fe–Al System via Layer by Layer 3D Laser Cladding

Comparison of Additive Technologies for Gradient Aerospace Part Fabrication from Nickel-Based Superalloys

Laser-controlled intermetallics synthesis during surface cladding

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