Journal ArticleDOI
A mechanistic study of oxidation-induced degradation in a plasma-sprayed thermal barrier coating system. part i: model formulation
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In this article, a coupled oxidation-constitutive approach is proposed to describe the effect of the phase transformations caused by local internal and external oxidation processes on the constitutive behav- iour of the metallic coating.About:
This article is published in Acta Materialia.The article was published on 2001-05-25. It has received 223 citations till now. The article focuses on the topics: Thermal barrier coating & Coating.read more
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Microstructural and compositional design of Ni-based single crystalline superalloys ― A review
TL;DR: In this paper, a review on the effects of some common alloying elements on the microstructural and mechanical property stability control of Ni-based superalloys is presented, including base elements, mechanical strengthening elements, long term stability elements and the oxidation resistance elements.
Journal ArticleDOI
Progress update on failure mechanisms of advanced thermal barrier coatings: A review
Vijay Kumar,K. Balasubramanian +1 more
TL;DR: In this article, a comprehensive review of various degradation mechanisms to which thermal barrier coatings (TBCs) are subjected during service life is presented, viz. hot corrosion, CMAS attack, oxidation, erosion, foreign object damage, sintering and phase transformations.
Journal ArticleDOI
Failure of metals II: Fatigue
TL;DR: In this article, a multistage grain scale approach to microstructure-sensitive fatigue crack formation and growth is presented which uses Fatigue Indicator Parameters (FIPs) to correlate these processes.
Journal ArticleDOI
Damage mechanisms and lifetime behavior of plasma-sprayed thermal barrier coating systems for gas turbines — Part II: Modeling
TL;DR: In this article, detailed damage analysis of a plasma sprayed ZrO 2 /8 ¾wt −% Y 2 O 3 -MCrAlY-CMSX-4 TBC system during isothermal and cyclic oxidation tests with different dwell times at high temperature have been performed.
Journal ArticleDOI
Oxidation and crack nucleation/growth in an air-plasma-sprayed thermal barrier coating with NiCrAlY bond coat
TL;DR: In this paper, the authors investigated the oxidation behavior of an air-plasma-sprayed thermal barrier coating (APS-TBC) system in both air and low-pressure oxygen environments, and concluded that mixed oxides played a detrimental role in causing crack nucleation and growth, reducing the life of the TBC in air.
References
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Journal ArticleDOI
A non‐linear continuous fatigue damage model
Jean-Louis Chaboche,P. M. Lesne +1 more
TL;DR: In this article, a non-linear cumulative fatigue damage model was proposed for different steels and various loading situations, including two-level tests and block-programs, and its ability to describe all the main features of fatigue damage and the ease of its practical use for engineers are discussed.
Journal ArticleDOI
Anisotropic damage law of evolution
TL;DR: In this paper, a formulation for anisotropic damage is established in the framework of the principle of strain equivalence, where the damage variable is still related to the surface density of microcracks and microvoids and, as its evolution is governed by the plastic strain, it is represented by a second order tensor and is orthotropic.
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Development of Continuum Damage Mechanics for Elastic Solids Sustaining Anisotropic and Unilateral Damage
TL;DR: In this article, the phenomenological approach of Continuum Damage Mechanics and the consistent modeling of damaging processes incorporating two specificities are discussed, i.e., phenomenological approaches and consistent modeling.
Journal ArticleDOI
Thermal/residual stress in an electron beam physical vapor deposited thermal barrier coating system
TL;DR: In this paper, the failure behavior of an electron beam physical vapor deposited yttria stabilized zirconia thermal barrier coating on a Pt-Al bond coat was observed to start at grain boundary ridges, some of which evolved into oxide filled cavities.
Journal ArticleDOI
Influence of cyclic strain on life of a PVD TBC
TL;DR: In this article, a thermal mechanical fatigue (TMF) test was developed to determine the effect of strain on the life of a thermal barrier coating and showed that as the compression on the coating at minimum temperature was increased, the cycles to spall decreased, following a power law dependence on total strain range.
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Afsaneh Rabiei,A.G. Evans +1 more