Results 1 to 10 of about 621 (208)
Modelling freckles and spurious grain formation in directionally solidified superalloy castings [PDF]
Communications MaterialsSegregation channels with misoriented spurious grains, known as freckles, are an unacceptable casting defect in superalloy turbine blades. A digital-twin method to predict segregation channels was proposed in our previous studies; however, the formation ...
Haijie Zhang +6 more
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Crystals, 2022 The influence of service-induced degradation on residual life is very important for the safe service of turbine blades. In this study, a series of simulation experiments were conducted on a directionally solidified superalloy under (880–1020) °C/(70–220)
Xiaotong Guo +5 more
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Anisotropic acoustic properties of directionally solidified nickel-based superalloy DZ444
Cailiao gongcheng, 2019 Directionally solidified nickel-based superalloy DZ444 specimens with different directions were selected. The crystal orientation and microstructure were characterized by electron back-scattered diffraction technique and so on.
LUO Zhong-bing +3 more
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Cailiao gongcheng, 2016 In order to investigate the corrosion performance on intersecting and longitudinal surfaces of unoxidized and oxidized directionally solidified superalloys, Ni-base directionally solidified superalloy DZ125 and Co-base directionally solidified superalloy
MA Luo-ning, WANG Tian-you, ZHANG Zheng
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Dendrite spacings in directionally solidified superalloy PWA-1480
Materials Science and Engineering: A, 1991 Abstract Primary dendrite spacings and side-branch coarsening kinetics were examined in specimens of the single-crystal multicomponent commercial superalloy PWA-1480, which were directionally solidified in a positive thermal gradient. The experimentally observed dependence of primary dendrite spacings and side-branch coarsening kinetics on growth ...
M. Vijayakumar +3 more
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Formation Mechanism and Restraining Measures of Burning-on of DZ22B Directionally Solidified Blade
Journal of Aeronautical Materials, 2018 The microstructure and chemical composition of the burning-on layer of the directionally solidified blade of the DZ22B superalloy were studied by means of SEM and EDS.
LI Fei +6 more
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Effects of Withdrawal Rate on the Microstructure of Directionally Solidified GH4720Li Superalloys. [PDF]
Materials (Basel), 2019 Increasing the ingot size of GH4720Li superalloys makes it difficult to control their microstructure, and the withdrawal rate is an important factor in controlling and refining the microstructure of GH4720Li superalloys. In this study, GH4720Li superalloy samples were prepared via Bridgman-type directional solidification with different withdrawal rates.
Qu J +5 more
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LOW-CYCLE FATIGUE OF THE SECOND GENERATION DIRECTIONALLY SOLIDIFIED SUPERALLOY
Jixie qiangdu, 2017 The total strain-controlled low cycle fatigue（ LCF） behaviors of a directionally solidified（ DS） superalloy DZ406 at 950℃ and 1000℃ for R = 0. 05 were investigated.
ZHANG ShiChao, LI Li, HOU XueQin
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Tensile Deformation Behavior of a Directionally Solidified Superalloy at Cryogenic Temperatures
Crystals, 2022 Ni-based superalloys are widely used to manufacture gas turbine core components, but reports on the reliability of superalloys at cryogenic temperatures are still limited.
Xiaotong Guo +6 more
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Materials Research LettersThis study systematically analyzed the microstructure, grain boundary, and dislocation evolution of a novel directionally solidified superalloy with excellent creep resistance under different conditions and the alloy outperformed first-generation single ...
Yunpeng Fan +8 more
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