Effect of Vanadium on the Solidification and Homogenization Behaviors in Inconel 718 Alloy

Mo, Yan; Wang, Dongzhe; Jiang, Bin; Yong-you, LI; Liu, Haiding; Wang, Chunguang; Cai, Xinnan; Wang, Jintai

doi:10.1002/adem.201600127

Cited by 12 publications

(6 citation statements)

References 11 publications

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“…The composition of precipitated phase of Pt-free alloy in Figure 1b can be inferred as (Fe, Ni) 2 (Nb, Mo, Ti, Cr, C, Al, W) from Figure 3a, which is consistent with the reported chemical composition ((Fe, Ni) 2 (Nb, Cr, Mo, Ti)) of Laves phase in nickel-based superalloys such as 718Plus and 718. [16,30,31] Figure 3 shows the EPMA maps of elements distribution. As shown in Figure 3a,c, Nb is significantly enriched in Laves phase and Pt slightly enriched in Laves phase.…”

Section: Resultsmentioning

confidence: 99%

Pseudobinary Phase Diagrams of Eutectic Reaction for Pt‐containing and Pt‐free 718Plus Alloys

et al. 2021

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The pseudobinary phase diagrams of Pt-containing and Pt-free 718Plus alloys are constructed to better understand how Pt affects the eutectic reaction. The phase transition temperature is obtained by differential scanning calorimetry (DSC). The compositions of γ phase, eutectic phase, and Laves phase are obtained by energy dispersive spectrometry (EDS). Nb is set as the independent variable in the phase diagram as Nb is the most susceptible to concentration of eutectic phase during solidification. The reliability of the pseudobinary phase diagrams is verified by the results reported. According to the diagrams, on one hand, Pt increases the concentration of Nb required for the (Laves þ γ) eutectic reaction by increasing lattice space. On the other hand, the increased concentration of Nb and the slow diffusion rates of Pt and Nb cause the decrease in the temperature of the eutectic reaction. As a result, the eutectic point in the pseudobinary phase diagram moves down and shift to the right. Herein, experimental data are provided for enriching the phase diagram of 718Plus alloy.

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Section: Resultsmentioning

confidence: 99%

Pseudobinary Phase Diagrams of Eutectic Reaction for Pt‐containing and Pt‐free 718Plus Alloys

et al. 2021

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Section: Methodsmentioning

confidence: 99%

“…The nominal composition of the master alloy (in mass fraction, %) is C 0.02, Cr 19.23, Nb 5.00, Ti 1.08, Mo 3.2, Al 0.54, Fe 18.64, balance Ni. IN718 alloys with different amounts of vanadium are shown in Table 1 [14]. Many studies have used the addition of different elements to control the degree of segregation of the Laves phase, thereby improving the properties of the IN718 alloy.…”

Section: Methodsmentioning

confidence: 99%

“…The effect of vanadium on the solidification and homogenization behavior of IN718 alloy was studied. It is observed that vanadium is uniformly distributed in the dendrite and interdendritic regions, which can effectively prevent the precipitation of the Laves phase [ 14 ]. The influence of different contents of vanadium on the microstructure and mechanical properties of IN718 alloy in casting was evaluated.…”

Section: Introductionmentioning

confidence: 99%

“…3.2, Al 0.54, Fe 18.64, balance Ni. IN718 alloys with different amounts of vanadium are shown in Table 1[14].…”

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confidence: 99%

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Effect of Vanadium Content on the Microstructure and Mechanical Properties of IN718 Alloy by Laser Cladding

Xu-dong

et al. 2021

Materials

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Microalloying vanadium can change the segregation state of Nb element in IN718 alloy, reduce the formation of harmful Laves phase and refine the dendritic structure of IN718 alloy during the laser process. Therefore, IN718 alloys with V content from 0.081 to 1.88 wt.% were prepared and evaluated. Metallographic microscopy and scanning electron microscopy were used to observe the corresponding morphology, structure, and distribution of elements. First of all, it was found that the addition of V refines the grain size of IN718 alloy and reduces the primary dendrite arm spacing. Secondly, adding V to IN718 alloy can reduce the porosity of the cladding layer. The elements are uniformly distributed in the cladding layer, and the addition of vanadium reduces the segregation degree of the Nb element, which is conducive to homogenization. In addition, microhardness and residual stress were also investigated. Finally, the addition of vanadium was shown to have no apparent effect on the tensile strength and yield strength but can significantly improve the elongation of IN718 alloy. In conclusion, the microstructure and mechanical properties of IN718 alloy with 0.081 wt.% vanadium content provide a new solution to improve the application level of IN718 alloy in laser cladding.

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The Influence of Nominal Composition on the Microstructure, Tensile Properties, and Weldability of Cast Monel Alloys

Farnin,

Coker,

Salinas

et al. 2023

Metall Mater Trans A

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Effect of Vanadium on the Solidification and Homogenization Behaviors in Inconel 718 Alloy

Cited by 12 publications

References 11 publications

Pseudobinary Phase Diagrams of Eutectic Reaction for Pt‐containing and Pt‐free 718Plus Alloys

Pseudobinary Phase Diagrams of Eutectic Reaction for Pt‐containing and Pt‐free 718Plus Alloys

Effect of Vanadium Content on the Microstructure and Mechanical Properties of IN718 Alloy by Laser Cladding

The Influence of Nominal Composition on the Microstructure, Tensile Properties, and Weldability of Cast Monel Alloys

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