Enhanced creep properties of nickel-base single crystal superalloy CMSX-4 by high magnetic field

Wang, Xuan; Song, Guo Xiang; Duan, Fangmiao; Xiao, Zude; Pan, Wenxuan; Zhang, Yajun; Li, Chuanjun; Wang, Jiang; Ren, Zhongming

doi:10.1016/j.msea.2020.140729

Cited by 11 publications

(2 citation statements)

References 36 publications

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“…For example, their leading representative is a nickel-based second-generation CMSX-4 superalloy supplied by Cannon-Muskegon. The complex loads during the service of the blades mean that they must be resistant to high-temperature tensile strain and creep; these requirements are met by CMSX-4 superalloy [5][6][7]. The single-crystalline casts of CMSX-4 cast have high phase stability and homogeneity of the dendritic structure [8,9], as well as resistance to high-temperature corrosion [4,8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Blade Geometry on γ′ Lattice Parameter and Primary Orientation of SX Cored Turbine Blades (I)

2022

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The γ′ lattice parameter aγ′ and the α angle defining the primary crystal orientation of the single-crystalline cored turbine blades made of CMSX-4 superalloy were measured in the areas located near the selector situated asymmetrically, considering the top view of the blade. The distributions of the aγ′ and the α angle were determined along the lines parallel to the vertical blade axis Z using X-ray diffraction methods. The relations between changes in the aγ′(Z) and α(Z) were analyzed on the Z levels where the shape of the blade’s cross-section changes. For the first time, the local increase in aγ′(Z) was found near the root–airfoil connection level and near certain other root levels, which is related to the change in blade section shapes on such levels. The local extremes in α(Z), representing the dendrite bend, were observed at these levels. The increase in the aγ′(Z) with the local bending of dendrites was discussed concerning the local redistribution of alloying elements and local residual stresses of the γ-dendrites. For the first time, a method of analyzing the local bending of the dendrites was proposed by studying the behavior of the α(Z). The presented results concern the first stage of the research covering areas relatively close to the selector, considering the top view of the blades. The second stage will include the analysis of the areas of the blade localized at a longer distance from the selector.

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Section: Introductionmentioning

confidence: 99%

Effect of Blade Geometry on γ′ Lattice Parameter and Primary Orientation of SX Cored Turbine Blades (I)

2022

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“…The most extensively researched and documented in the literature, and nowadays the most frequently applied as well, is the CMSX-4 ® nickel-based second-generation superalloy. Due to an impressive combination of high-temperature strength, good phase stability, and resistance to oxidation and hightemperature corrosion during operation, the single-crystalline blades made of CMSX-4 ® superalloy are widely used in a hot section of jet engines [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Correlation between the Dendritic Structure and Lattice Parameter of γ′-Phase in Single-Crystalline Turbine Blades Made of Superalloys

Krawczyk

Bogdanowicz

2022

Materials

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The dendritic structure and the distribution of the γ′‑phase lattice parameter (aγ′) along selected lines of the longitudinal section in a model single-crystalline blade made of CMSX-4® nickel-based superalloy were studied. It was established that there is a correlation between the value of the aγ′ and the predomination of initial or ending fragments of the secondary dendrite arms. It is most noticed for the areas where the dendrite growth conditions are similar to steady. They are located in the center and near the root’s selector extension (SE) area. The correlation has been related to the dendritic segregation mechanism. It was shown that in the single-crystalline blades obtained by the directional crystallization using a spiral selector, the “walls” of the primary dendrite arms that grow at a low angle to the blade axis are created. It was found for the first time that the value of the lattice parameter aγ′ is decreased near such “walls”. Additionally, it was found that competitive growth of the dendrites may occur at a distance of even several millimeters from the bottom surface of the root. The first-time applied X-ray diffraction measurements of aγ′ made in a single-pass along the line allow the analysis of the dendritic segregation in the whole blade cast.

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Effect of Magnetic Field Configuration on Stray-Crystal Formation with Different Platform Sizes during Directional Solidification of Single-Crystal Superalloy

Lu,

Zhang,

Yuan

et al. 2024

Acta Metall. Sin. (Engl. Lett.)

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Enhanced creep properties of nickel-base single crystal superalloy CMSX-4 by high magnetic field

Cited by 11 publications

References 36 publications

Effect of Blade Geometry on γ′ Lattice Parameter and Primary Orientation of SX Cored Turbine Blades (I)

Effect of Blade Geometry on γ′ Lattice Parameter and Primary Orientation of SX Cored Turbine Blades (I)

Correlation between the Dendritic Structure and Lattice Parameter of γ′-Phase in Single-Crystalline Turbine Blades Made of Superalloys

Effect of Magnetic Field Configuration on Stray-Crystal Formation with Different Platform Sizes during Directional Solidification of Single-Crystal Superalloy

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