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Failure Analysis of a GTD-111 Turbine Blade Using Metallurgical Analysis and Fractography

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A Correction to this article was published on 18 October 2019

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Abstract

The failure of a gas turbine blade, made of a nickel-base superalloy GTD-111, was studied by metallurgical approaches. The turbine has been operating for around 73,500 h before the blade failure. As a result of the blade failure, the turbine was damaged rigorously. The analysis began with a comprehensive visual examination of the turbine and the blades’ exteriors. Afterward, the examination was continued by fractography of the fracture surfaces, microstructural examinations, and chemical analysis. Fracture was found to occur by micro-cracks spreading on the leading edge as the result of hot corrosion from overheating, together with precipitation of continuous grain boundary carbides. The overheating was resulted from blockage of air channels of the blade as a consequence of improper filtration of inlet compressor air.

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  • 18 October 2019

    In the title for Table 5, “region A in Fig. 6b” should read “region A in Fig. 7b.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Zanjan, Zanjan, Iran

    Esmaeil Poursaeidi & Kaveh Torkashvand

  2. IPPR Research Lab, Iran Power Plant Repairs Co., Karaj, Iran

    Morteza Aieneravaie & Reza Bannazadeh

Authors
  1. Esmaeil Poursaeidi
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  2. Morteza Aieneravaie
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  3. Reza Bannazadeh
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  4. Kaveh Torkashvand
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Correspondence to Esmaeil Poursaeidi.

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Poursaeidi, E., Aieneravaie, M., Bannazadeh, R. et al. Failure Analysis of a GTD-111 Turbine Blade Using Metallurgical Analysis and Fractography. J Fail. Anal. and Preven. 19, 1358–1369 (2019). https://doi.org/10.1007/s11668-019-00732-9

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  • DOI: https://doi.org/10.1007/s11668-019-00732-9

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