Structural characteristics of nickel alloys with tantalum

Burova, N. N.; Maslenkov, S. B.

doi:10.1007/bf00780771

Cited by 3 publications

(3 citation statements)

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“…The elemental constituents and compositions of these are present via EDS spectrum analysis. Ta addition in nickel-based alloys has been noted to be one of the key elements for solid solution strengthening and improving the intermetallic g -phase, ranging from room temperature application to extreme temperatures (Burova and Maslenkov, 1979). In Figure 3 This result is in accord with the XRD analysis, reflecting Ni, Mo and Cr dominating the significant peaks.…”

Section: Microstructural Characterizationsupporting

confidence: 66%

“…In the Ni-17Cr10Mo alloy, the Ni 3 Cr 2 phase was detected at diffraction angles 43.775° and 52°. However, γ-phase strengthening compounds (Burova and Maslenkov, 1979) such as NiTa 2 intermetallic and Ni-rich Ni 3 Ta, CrO 4 Ta and Ta 2 O 5 were detected in Ni-17Cr10Ta alloy, as analyzed through X’Pert Highscore plus software. The Ni-rich Ni 3 Ta intermetallic seen in this alloy has been reported to possess strengthening and shape memory effect attributes at elevated temperatures (Kosorukova et al , 2015; Kosorukova et al , 2013).…”

Section: Resultsmentioning

confidence: 99%

“…The elemental constituents and compositions of these are present via EDS spectrum analysis. Ta addition in nickel-based alloys has been noted to be one of the key elements for solid solution strengthening and improving the intermetallic γ-phase, ranging from room temperature application to extreme temperatures (Burova and Maslenkov, 1979). In Figure 3(b), the SEM image of the Ni-17Cr10Mo alloy shows areas that portray lighter grey and dark regions and was examined via EDS to be Mo-rich [Figure 3(b)-2] and Cr-rich [Figure 3(b)-1] regions, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Mechanical and tribological studies of sintered nickel-based ternary alloys

Babalola

Akinribide

Akinwamide

et al. 2021

WJE

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Purpose During the operation of nickel-based alloys as blades and discs in turbines, the sliding activity between metallic surfaces is subjected to structural and compositional changes. In as much as friction and wear are influenced by interacting surfaces, it is necessary to investigate these effects. This study aims to understand better the mechanical and tribological characteristics of Ni-17Cr-10X (X = Mo, W, Ta) ternary alloy systems developed via spark plasma sintering (SPS) technique. Design/methodology/approach Nickel-based ternary alloys were fabricated via SPS technique at 50 MPa, 1100 °C, 100 °C/min and a dwell time of 10 mins. Scanning electron microscopy, X-Ray diffraction, energy dispersive X-ray spectroscopy, nanoindentation techniques and tribometer were used to assess the microstructure, phase composition, elemental dispersion, mechanical and tribological characteristics of the sintered nickel-based alloys. Findings The outcome of the investigation showed that the Ni-17Cr10Mo alloy exhibited the highest indentation hardness value of 8045 MPa, elastic modulus value of 386 GPa and wear resistance. At the same time, Ni-17Cr10W possessed the least mechanical and wear properties. Originality/value It can be shown that the SPS technique is efficient in the development of nickel-based alloys with good elemental distribution and without defects such as segregation of alloying elements, non-metallic inclusions. This is evident from the scanning electron microscopy micrographs.

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Section: Microstructural Characterizationsupporting

confidence: 66%

Section: Resultsmentioning

confidence: 99%

“…The elemental constituents and compositions of these are present via EDS spectrum analysis. Ta addition in nickel-based alloys has been noted to be one of the key elements for solid solution strengthening and improving the intermetallic γ-phase, ranging from room temperature application to extreme temperatures (Burova and Maslenkov, 1979). In Figure 3(b), the SEM image of the Ni-17Cr10Mo alloy shows areas that portray lighter grey and dark regions and was examined via EDS to be Mo-rich [Figure 3(b)-2] and Cr-rich [Figure 3(b)-1] regions, respectively.…”

Section: Resultsmentioning

confidence: 99%

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