Distribution of Phosphorus and Its Effects on Precipitation Behaviors and Tensile Properties of IN718C Cast Superalloy

Zhang, Anwen; Yang, Yan; Zhang, Sha; Zhang, Dong; Zhang, Weihong; Han, Di; Qi, Feng; Tan, Yuanguo; Xin, Xin; Sun, Wei

doi:10.1007/s40195-018-0834-1

Cited by 7 publications

(2 citation statements)

References 27 publications

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“…The increase in the Al/Ti atomic ratio significantly reduces the degree of element segregation in IN718 alloy during casting [ 10 ]. The addition of phosphorus can change the propagation path of cracks from the matrix (Laves phase) around the particles to the interface between the matrix and the particles [ 11 ]. Zr can inhibit the precipitation of Laves phase at the grain boundary of K4169 alloy [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%

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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“…Ni-based superalloys are often used for high-pressure turbine blades of advanced aero engines [1][2][3][4][5]. Among these, singlecrystal alloys have been introduced due to their excellent high-temperature mechanical properties by eliminating grain boundaries [3,6].…”

Section: Introductionmentioning

confidence: 99%

Effect of grit blasting and subsequent heat treatment on stress rupture property of a Ni-based single-crystal superalloy SGX3

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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In the present study, the effect of grit blasting and subsequent heat treatment on the stress rupture properties of a thirdgeneration nickel-based single-crystal superalloy SGX3 sheet was studied. It was found that the stress rupture life of alloy SGX3 sheet at 980 °C/250 MPa was reduced by about 60% by only vacuum heat treatment at 1100 °C for 200 h and further reduced by 20% and 70% respectively with grit blasting of 0.3 MPa/1 min and 0.5 MPa/2 min before heat treatment. The microstructure analysis results indicated that the degradation of stress rupture life of alloy SGX3 sheet by vacuum heat treatment was mainly attributed to the variation of γ/γ′ microstructure, i.e., the decrease in γ′ volume fraction and the coarsening of γ′ precipitates. Furthermore, such degradation by grit blasting and subsequent vacuum heat treatment should be attributed to the formation of cellular recrystallization with different thicknesses at the surface of alloy SGX3 sheet, which not only acts as the vulnerable site for cracks to initiate and propagate but also reduces the effective loading area.

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Element Segregation and Solidification Behavior of a Nb, Ti, Al Co-Strengthened Superalloy ЭК151

Tan

Liu

Zhang

et al. 2019

Acta Metall. Sin. (Engl. Lett.)

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Distribution of Phosphorus and Its Effects on Precipitation Behaviors and Tensile Properties of IN718C Cast Superalloy

Cited by 7 publications

References 27 publications

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

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

Effect of grit blasting and subsequent heat treatment on stress rupture property of a Ni-based single-crystal superalloy SGX3

Element Segregation and Solidification Behavior of a Nb, Ti, Al Co-Strengthened Superalloy ЭК151

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