Effects of heat treatment on microstructure and high-temperature tensile properties of nickel-based single-crystal superalloys

Wang, Andong; Lv, Jinjuan; Chen, Caifeng; Xu, Weitai; Zhang, Luxiang; Mao, Yongquan; Zhao, Yangjing

doi:10.1088/2053-1591/ab446c

Cited by 9 publications

(1 citation statement)

References 32 publications

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“…The production of the rotor blades includes subjecting them to the heat treatment process to increase chemical and microstructural homogeneity and to obtain a large amount of the γ' phase, as well as to decrease the crystal orientation inhomogeneity through elimination of the low-angle boundaries (LABs) created during crystallization [20][21][22][23]. However, it has been stated that not all macroscopic LABs are eliminated by the heat treatment but also that new extra LABs may be created as a result of this treatment.…”

Section: Introductionmentioning

confidence: 99%

The Number of Subgrain Boundaries in the Airfoils of Heat-Treated Single-Crystalline Turbine Blades

2020

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In the present study, the dendrites deflection mechanism from the mold walls were subjected to verification regarding its heat-treated turbine rotor blades. The number of macroscopic low-angle boundaries created on the cross-section of the blades’ airfoil near the tip was experimentally determined and compared to the number of low-angle boundaries calculated from a model based on the dendrites deflection mechanism. Based on the Laue patterns and geometrical parameters of airfoils, the number of low-angle boundaries occurring at the upper part of the blades airfoil after heat treatment was calculated. This number for the analyzed group of blades ranged from 5 to 9.

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Section: Introductionmentioning

confidence: 99%