Effect of Thermal Barrier Coating Layer on HIP Treated IN738LC Fatigue Characteristic

Kuba, Shunichi; Kojima, Yoshitaka; Suzuki, Hideto

doi:10.4028/www.scientific.net/kem.306-308.109

Cited by 7 publications

(5 citation statements)

References 11 publications

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“…One of the major advances in turbine engines is the use of thermal barrier coatings (TBCs) [3,7,8]. With regard to the harsh environment, the TBCs are applied to decreases the operating temperature and improves the oxidation resistance of hot components made of superalloys, such as turbine blades [3,9].…”

Section: Populärvetenskaplig Sammanfattningmentioning

confidence: 99%

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Performance of High-temperature Coatings : Oxidation and Interdiffusion

Sun

2023

Linköping Studies in Science and Technology. Licentiate Thesis

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The use of aluminiferous coatings profoundly improves the service life of superalloys but leads to the microstructural degradation of superalloys and thus the loss of mechanical properties. To solve this trade-off, two strategies were employed in this research. At first, we modified MCrAlY coatings by inducing Ta to reduce the interdiffusion effect on substrate alloys. This strategy was verified by 2000 h/1100 °C oxidation tests in two Ta-containing MCrAlY-IN792 systems. The system with 3.3 wt.% Ta MCrAlY displays an outstanding resistance to γ′ depletion in the substrate and comparable oxidation property in comparison with a reference system of Ta-free MCrAlY-IN792. Increasing Ta to 7.4 wt.% results in reduced oxidation resistance. Thermodynamic simulations revealed the phase-Prof. Ru Lin Peng, for her infinite enthusiasm and support, valuable discussions and constructive comments. And I have learned a lot from her rigorous science cogitation. Secondly, I want to thank my co-supervisor Dr.Xin-Hai Li, from Siemens Industrial Turbomachinery AB and Prof. Johan Moverare for providing the valuable guidance and fruitful discussions. Special thanks are addressed to Pimin Zhang and Kang Yuan, former PhDs from our division, who have done outstanding jobs as a good guidance for my following research. My thanks also go to my collaborators from Charmers University, Dr. Xiaolong Li and Pr. Sheng Guo, who have prepared materials for our project. And I want to thank all my colleagues in Engineering Materials for their kind help during the study. Sincerely, appreciate our head of division, Mattias Calmunger for his warm concern, Jinghao and Rodger for their supporting in my oxidation experiments.

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Section: Populärvetenskaplig Sammanfattningmentioning

confidence: 99%

“…A TBC system is constructed by two parts of ZrO 2 ceramic coatings and bond coatings [3,7,9]. The outer ZrO 2 ceramic coating with a low-thermal conductivity acts the role as thermal insulation to metallic components from the hot gas stream in turbine engines [3].…”

Section: Thermal Barrier Coatingsmentioning

confidence: 99%

Performance of High-temperature Coatings : Oxidation and Interdiffusion

Sun

2023

Linköping Studies in Science and Technology. Licentiate Thesis

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“…LCF performance of Ni-based superalloy coated with YSZ conventional thermal barrier coating have been rarely investigated. As reported by Šulák et al [ 96 ], results on studies on LCF of YSZ coated Ni superalloys are a bit controversial, showing in some case a beneficial [ 179 ], an insignificant [ 180 ], or a detrimental effect [ 181 ] on the fatigue life. In their work, Šulák et al have investigated the effect of high-temperature (900 °C) LCF performance of a complex TBC-coated and uncoated Inconel 713LC sample.…”

Section: Coatings For Ni- and Ti-based Alloys For Aerospace Enginementioning

confidence: 99%

Critical Raw Materials Saving by Protective Coatings under Extreme Conditions: A Review of Last Trends in Alloys and Coatings for Aerospace Engine Applications

et al. 2021

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Several applications where extreme conditions occur require the use of alloys often containing many critical elements. Due to the ever increasing prices of critical raw materials (CRMs) linked to their high supply risk, and because of their fundamental and large utilization in high tech products and applications, it is extremely important to find viable solutions to save CRMs usage. Apart from increasing processes’ efficiency, substitution, and recycling, one of the alternatives to preserve an alloy and increase its operating lifetime, thus saving the CRMs needed for its manufacturing, is to protect it by a suitable coating or a surface treatment. This review presents the most recent trends in coatings for application in high temperature alloys for aerospace engines. CRMs’ current and future saving scenarios in the alloys and coatings for the aerospace engine are also discussed. The overarching aim of this paper is to raise awareness on the CRMs issue related to the alloys and coating for aerospace, suggesting some mitigation measures without having the ambition nor to give a complete overview of the topic nor a turnkey solution.

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“…Detrimental effect is reported at high stress amplitudes while fatigue lives are longer at low stress amplitudes and at the fatigue limit in TBC coated Supremi C263 superalloy [4]. TBC coated cast superalloy IN738LC showed lower fatigue life than IN738LC without TBC [5]. Fatigue spallation cracks were observed within the top coat made of ZrO 2 stabilized by 8%Y 2 O 3 close to the interface between the top coat and bond coat (CoNiCrAlY).…”

Section: Introductionmentioning

confidence: 96%

“…Influence of thermal barrier coatings on the fatigue life is ambiguous [4,5]. Detrimental effect is reported at high stress amplitudes while fatigue lives are longer at low stress amplitudes and at the fatigue limit in TBC coated Supremi C263 superalloy [4].…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Barrier Coating on Low Cycle Fatigue Behavior of Cast Inconel 713LC at 900 °C

Obrtlík

Hutařová

Čelko

et al. 2014

AMR

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The effect of thermal barrier coating (TBC) on low cycle fatigue behavior of cast superalloy Inconel 713 LC has been studied at 900 °C. The TBC consisting of a CoNiCrAlY bond coat and a zirconia (ZrO2) top coat stabilized by 8% yttria (Y2O3) was deposited on the gauge section of cylindrical specimens using the atmospheric plasma spray technique. Cylindrical specimens of Inconel 713LC in as-received condition and with surface treatment were cyclically strained under strain control with constant total strain amplitude in symmetrical cycle at 900 °C in air. Hardening/softening curves, cyclic stress-strain curve and fatigue life data of coated and uncoated material were obtained. The stress response of the TBC coated specimens is lower in comparison with the uncoated specimens. Detrimental effect of surface treatment on the Basquin curve is documented. Specimen sectioning and fracture surface observations revealed fatigue damage mechanisms and help to discuss differences in fatigue behavior of the coated and uncoated superalloy.

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Effect of Thermal Barrier Coating Layer on HIP Treated IN738LC Fatigue Characteristic

Cited by 7 publications

References 11 publications

Performance of High-temperature Coatings : Oxidation and Interdiffusion

Performance of High-temperature Coatings : Oxidation and Interdiffusion

Critical Raw Materials Saving by Protective Coatings under Extreme Conditions: A Review of Last Trends in Alloys and Coatings for Aerospace Engine Applications

Effect of Thermal Barrier Coating on Low Cycle Fatigue Behavior of Cast Inconel 713LC at 900 °C

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