Fatigue failure behavior and strength prediction of nickel-based superalloy for turbine blade at elevated temperature

Li, Xiaolong; Li, Wei; Lashari, Muhammad Imran; Sakai, Tatsuo; Wang, Ping; Liu, Cai; Ding, Xiaoming; Hamid, Usama

doi:10.1016/j.engfailanal.2022.106191

Cited by 11 publications

(6 citation statements)

References 27 publications

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“…The critical heated components of gas turbines, aero engine, turbocharger, and advanced spacecraft are usually fabricated in polycrystalline nickel-based superalloys. [1][2][3][4] The main feature of these alloys is the ability to maintain excellent mechanical performance at intermediate and high temperature, such as fatigue performance and mechanical strength. K418 is an alloy in the nickel-based superalloys family, which is a ductile material.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation of ductile fracture of K418 on in‐situ tensile tests

Li,

Cui,

Wang

et al. 2024

Fatigue Fract Eng Mat Struct

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In this study, the effect of the Lode angle on failure and plasticity is considered, and a new Lode angle function on plasticity is developed. Meanwhile, a new temperature coefficient function is proposed in this model, and the application of the model is extended to the range from room temperature to 650°C. The tensile specimens of different shapes have been designed to calibrate the parameters of the model. The tensile tests are carried out on the in situ micro‐tensile machine. For the notched tensile specimens at room temperature to validate the constitutive model, numerical results are consistent with experimental ones well, with an error of 7%. Then, the calibrated model is applied to FE simulations to numerically study the fracture phenomena observed in the test. The fracture positions and damage initiation positions of the shear specimen and the notched tensile specimen can be predicted by FE simulations well, while the smooth tensile specimen cannot be predicted well due to real specimens' imperfections.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation of ductile fracture of K418 on in‐situ tensile tests

Li,

Cui,

Wang

et al. 2024

Fatigue Fract Eng Mat Struct

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“…Second, the materials should have sufficient creep strength to withstand temperature demands [1]. Third, the material should have highcycle and low-cycle fatigue strengths [2].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Mechanical Properties of MAR-M247 Superalloy for Turbine Blades by Experiment and Simulation

Lin,

Geng,

Zhou

et al. 2024

Archives of Metallurgy and Materials

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This study aimed to investigate the metallographic structure and the impact of the heat treatment process on the MAR-M247 superalloy, a high-temperature nickel-based superalloy commonly used in turbine blades. The heat treatment process can potentially influence the mechanical properties of the MAR-M247 superalloy at different temperatures. A strength simulation analysis of gas turbine blades should include the variations in the mechanical properties of the material. The effect of heat treatment on grain size was investigated by metallographic experiments, and numerical calculations of material mechanical properties were conducted. The mechanical property parameters necessary for finite element analysis of turbine blades were determined. Finally, a finite element simulation model of the blade was established based on these mechanical property parameters, and strength analysis was performed. The simulation results provided the stress distribution and the strength of the turbine blade.

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“…Meanwhile, the implementation of single-crystal materials on turbine blade also contributes to the failures since the crystal defects are inevitable [3]. Many studies show that the turbine blades are vulnerable to high cycle fatigue (HCF) failures [4][5][6][7]. Therefore, the prediction of fatigue life of turbine blade is crucial to guarantee a safety operation.…”

Section: Introductionmentioning

confidence: 99%

High Cycle Fatigue Life Prediction of Single-Crystal Specimen Based on TCD Method and Crystal Plasticity Theory

Wu¹,

Liu

Wang³

et al. 2023

International Journal of Aerospace Engineering

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This paper performs a comprehensive investigation on the high cycle fatigue (HCF) life prediction of turbine blade with film cooling holes. The modified theory of critical distance (MTCD) method is proposed to estimate the fatigue life of the specimen considering the notch sensitivity coefficient and multiaxial stress effect. Then, two types of specimens were designed with regard to the single-hole and multihole conditions. Afterwards, the dangerous path and fatigue life of the two specimens were achieved implementing the MTCD method. Then, the experiments and failure analysis were carried out. The results show that the stress concentration and multiaxial stress resulting from the film cooling holes are the primary reasons that the cracks originated. Meanwhile, the dangerous path of the single-hole specimen is quite different from the multihole specimen due to the interhole interference. Finally, most of the calculated fatigue life is within the twice error band of the tested life.

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Fatigue failure behavior and strength prediction of nickel-based superalloy for turbine blade at elevated temperature

Cited by 11 publications

References 27 publications

Experimental and numerical investigation of ductile fracture of K418 on in‐situ tensile tests

Experimental and numerical investigation of ductile fracture of K418 on in‐situ tensile tests

Investigation on Mechanical Properties of MAR-M247 Superalloy for Turbine Blades by Experiment and Simulation

High Cycle Fatigue Life Prediction of Single-Crystal Specimen Based on TCD Method and Crystal Plasticity Theory

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