Finite element simulations based on an interface cohesive zone model (CZM) have been developed to mimic the interfacial cracking behavior between the thermally grown oxide (TGO) and the aluminum-rich Pt–Al metallic bond coat (BC) during cooling from high temperature to ambient temperature. A two-dimensional half-periodic sinusoidal geometry corresponding to interface undulation is modeled. The effects of TGO thickness and interface asperity on the stress distribution and the cracking behavior are examined by parametric studies. The simulation results show that cracking behavior due to residual stress and interface asperity during cooling process leads to stress redistribution around the rough interface. The TGO thickness has strong influence on the maximum tensile stress of TGO and the interfacial crack development. For the sinusoidal asperities, there exists a critical amplitude above which the interfacial cracking is energetically favored. For any specific TGO thickness, crack initiation is dominated by the amplitude while crack propagation is restricted to the combine actions of the wavelength and the amplitude of the sinusoidal asperity.
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February 2017
Research-Article
Finite Element Analysis of the Effects of Thermally Grown Oxide Thickness and Interface Asperity on the Cracking Behavior Between the Thermally Grown Oxide and the Bond Coat
Jishen Jiang,
Jishen Jiang
Key Laboratory of Power
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: 1130209247@sjtu.edu.cn
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: 1130209247@sjtu.edu.cn
Search for other works by this author on:
Bingqian Xu,
Bingqian Xu
Key Laboratory of Advanced High-Temperature
Materials and Precision Forming,
School of Material Science and Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: xbqdoris@sjtu.edu.cn
Materials and Precision Forming,
School of Material Science and Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: xbqdoris@sjtu.edu.cn
Search for other works by this author on:
Weizhe Wang,
Weizhe Wang
Key Laboratory of Power
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: wangwz0214@sjtu.edu.cn
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: wangwz0214@sjtu.edu.cn
Search for other works by this author on:
Richard Amankwa Adjei,
Richard Amankwa Adjei
Key Laboratory of Power
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: Richard_x29a@sjtu.edu.cn
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: Richard_x29a@sjtu.edu.cn
Search for other works by this author on:
Xiaofeng Zhao,
Xiaofeng Zhao
Key Laboratory of Advanced High-Temperature
Materials and Precision Forming,
School of Material Science and Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: xiaofengzhao@sjtu.edu.cn
Materials and Precision Forming,
School of Material Science and Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: xiaofengzhao@sjtu.edu.cn
Search for other works by this author on:
Yingzheng Liu
Yingzheng Liu
Key Laboratory of Power
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: yzliu@sjtu.edu.cn
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: yzliu@sjtu.edu.cn
Search for other works by this author on:
Jishen Jiang
Key Laboratory of Power
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: 1130209247@sjtu.edu.cn
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: 1130209247@sjtu.edu.cn
Bingqian Xu
Key Laboratory of Advanced High-Temperature
Materials and Precision Forming,
School of Material Science and Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: xbqdoris@sjtu.edu.cn
Materials and Precision Forming,
School of Material Science and Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: xbqdoris@sjtu.edu.cn
Weizhe Wang
Key Laboratory of Power
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: wangwz0214@sjtu.edu.cn
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: wangwz0214@sjtu.edu.cn
Richard Amankwa Adjei
Key Laboratory of Power
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: Richard_x29a@sjtu.edu.cn
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: Richard_x29a@sjtu.edu.cn
Xiaofeng Zhao
Key Laboratory of Advanced High-Temperature
Materials and Precision Forming,
School of Material Science and Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: xiaofengzhao@sjtu.edu.cn
Materials and Precision Forming,
School of Material Science and Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: xiaofengzhao@sjtu.edu.cn
Yingzheng Liu
Key Laboratory of Power
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: yzliu@sjtu.edu.cn
Machinery and Engineering,
Gas Turbine Research Institute,
School of Mechanical Engineering,
Shanghai Jiao Tong University,
800 Dongchuan Road,
Shanghai 200240, China
e-mail: yzliu@sjtu.edu.cn
1Corresponding author.
Contributed by the Structures and Dynamics Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received June 19, 2016; final manuscript received July 3, 2016; published online September 13, 2016. Editor: David Wisler.
J. Eng. Gas Turbines Power. Feb 2017, 139(2): 022504 (9 pages)
Published Online: September 13, 2016
Article history
Received:
June 19, 2016
Revised:
July 3, 2016
Citation
Jiang, J., Xu, B., Wang, W., Adjei, R. A., Zhao, X., and Liu, Y. (September 13, 2016). "Finite Element Analysis of the Effects of Thermally Grown Oxide Thickness and Interface Asperity on the Cracking Behavior Between the Thermally Grown Oxide and the Bond Coat." ASME. J. Eng. Gas Turbines Power. February 2017; 139(2): 022504. https://doi.org/10.1115/1.4034259
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