Investigation into the influence of the remelting temperature on the structural heredity of alloys fabricated by centrifugal SHS metallurgy

Санин, В. В.; Филонов, М. Р.; Yukhvid, V. I.; Anikin, Yu. A.; Михайлов, А. М.

doi:10.3103/s1067821216020097

Cited by 9 publications

(9 citation statements)

References 9 publications

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“…The intergrain space of the Zr-doped alloy (Figure 6) was found to contain zone segregations of Ni5Zr. The characteristic size of the structural components and the principle of microstructure formation are similar to those for the developed Hf-doped CompoNiAl-M5-3 alloy [23][24][25][26]. It can be assumed that this microheterogeneous structure will not cause deterioration of mechanical properties.…”

Section: Resultsmentioning

confidence: 78%

“…The cast alloy was produced by centrifugal SHS casting [21]. The synthesis was performed on a radial centrifugal setup upon exposure to high gravity up to 300 g. The overall schematic diagram of the centrifugal setup used in this study was earlier presented in references [21,23]. Due to the design of the setup, it was possible to set the rotational speed of the centrifuge rotor in a controlled manner to ensure the target acceleration level.…”

Section: Methodsmentioning

confidence: 99%

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Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–X (X = La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing

et al. 2021

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The NiAl–Cr–Co–X alloys were produced by centrifugal self-propagating high-temperature synthesis (SHS) casting. The effects of dopants X = La, Mo, Zr, Ta, and Re on combustion, as well as the phase composition, structure, and properties of the resulting cast alloys, have been studied. The greatest improvement in overall properties was achieved when the alloys were co-doped with 15% Mo and 1.5% Re. By forming a ductile matrix, molybdenum enhanced strength characteristics up to the values σucs = 1604 ± 80 MPa, σys = 1520 ± 80 MPa, and εpd = 0.79%, while annealing at T = 1250 ℃ and t = 180 min improved strength characteristics to the following level: σucs = 1800 ± 80 MPa, σys = 1670 ± 80 MPa, and εpd = 1.58%. Rhenium modified the structure of the alloy and further improved its properties. The mechanical properties of the NiAl, ZrNi5, Ni0.92Ta0.08, (Al,Ta)Ni3, and Al(Re,Ni)3 phases were determined by nanoindentation. The three-level hierarchical structure of the NiAl–Cr–Co+15%Mo alloy was identified. The optimal plasma treatment regime was identified, and narrow-fraction powders (fraction 8–27 µm) characterized by 95% degree of spheroidization and the content of nanosized fraction <5% were obtained.

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Section: Resultsmentioning

confidence: 78%

Section: Methodsmentioning

confidence: 99%

Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–X (X = La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing

et al. 2021

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“…σ=exp(-E/RT) (8) where: E could be represented like the energy of motion of liquid phase metal atoms from the volume to the melting surface.…”

Section: Equation Basics For the Polythermal Diagrammentioning

confidence: 99%

“…The ideas underlying genetics, metallurgical heredity respectively, appeared in more than 50 years ago in different references [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. In the broad metallurgical sense heredity is the description of those properties of metals that are not only based on status, but depend on their past [3].…”

mentioning

confidence: 99%

Mathematical Processing and Structural Explanation of Surface Tension Polythermal Diagram Reached Out to Achieve Critical Temperature of Thermo-time Treatment for a Ni Based Superalloy

Rucai¹,

Constantin²,

Ciucă³

et al. 2019

Rev. Chim.

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Thermo-Time Treatment of multicomponent melting can be foreshadowed by the polythermal diagrams analysis of main physical and chemical properties, which are considered for this purpose as structural-sensitive properties: viscosity, surface tension, density or electrical conductivity [1]. Critical temperature (Tcr), i.e. temperature at which or around which, must run Thermo-Time Treatmenthas been experimentally marked by a sudden and seemingly contradictory deviation on polythermal diagrams of surface tension, s(T), reached out at cooling process for Ni base studied superalloy (MSRR 7045). A possible mathematical processing of it, is given by interpolation curves of the surface tensiondependence on temperature.

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“…the genetic cycle of interaction of solid-liquid-solid, i.e. the impact of the metallic materials of the charge upon the metal melt and therefore upon the properties of the newly obtained solid alloy [2,4].…”

mentioning

confidence: 99%

Quantitative Microstructural Analysis of a Ni-based Superalloy After Different Heat Treatments

2020

Rev.Chim.

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The efficiency of time-temperature treatment (T-TT) on metal melts can be microstructurally analysed through their degree of purity in non-metallic inclusions. In the case of the Ni-based super alloy under discussion (MSRR 7045) the heat treatment was the undercooling consequences both on the durability of the casting environment (ingots-refractories) and on the internal structure of the metal (porosity, microstructural isotropy). Keywords: time-temperature treatment, undercooled melt, non-metallic inclusions, purity, microstructural isotropy

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Investigation into the influence of the remelting temperature on the structural heredity of alloys fabricated by centrifugal SHS metallurgy

Cited by 9 publications

References 9 publications

Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–X (X = La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing

Structure and Properties of Heat-Resistant Alloys NiAl–Cr–Co–X (X = La, Mo, Zr, Ta, Re) and Fabrication of Powders for Additive Manufacturing

Mathematical Processing and Structural Explanation of Surface Tension Polythermal Diagram Reached Out to Achieve Critical Temperature of Thermo-time Treatment for a Ni Based Superalloy

Quantitative Microstructural Analysis of a Ni-based Superalloy After Different Heat Treatments

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