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Revealing microstru...
Revealing microstructural degradation mechanism induced by interdiffusion between Amdry365 coating and IN792 superalloy
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- Sun, Xiaoyu (author)
- Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten,Linköping University
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- Li, Xiaolong, 1991 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Department of Industrial and Materials Science, Chalmers University of Technology, Gothenburg, Sweden
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- Guo, Sheng, 1981 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Department of Industrial and Materials Science, Chalmers University of Technology, Gothenburg, Sweden
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- Yu, Xin (author)
- Institute for Advanced Studies in Precision Materials, Yantai University, Yantai, Shandong, China
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- Zhu, Lilong (author)
- Institute for Advanced Studies in Precision Materials, Yantai University, Yantai, Shandong, China
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- Teng, Jianwei (author)
- Institute for Advanced Studies in Precision Materials, Yantai University, Yantai, Shandong, China
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- Jiang, Liang (author)
- Institute for Advanced Studies in Precision Materials, Yantai University, Yantai, Shandong, China
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- Moverare, Johan (author)
- Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten,Linköping University
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- Li, Xin Hai (author)
- Siemens Energy AB,Siemens Energy AB, SE-61283 Finspång, Sweden
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- Peng, Ru Lin (author)
- Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten,Linköping University
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(creator_code:org_t)
- ELSEVIER SCI LTD, 2024
- 2024
- English.
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In: Materials and Design. - : ELSEVIER SCI LTD. - 1873-4197 .- 0264-1275. ; 241
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Abstract
Subject headings
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- Metallic coatings are widely employed to improve the oxidation resistance of superalloys. However, the interdiffusion between the metallic coatings and the superalloys leads to microstructural degradation in both. Some of the underlying degradation mechanisms are still elusive, e.g., the γ′ (Ni3Al) phase depletion in superalloys, where a large amount of γ′ precipitates are dissolved in the γ matrix even though the incoming Al from coatings indeed increases the Al content. Here, we investigated the interdiffusion behavior between the Amdry365 coating and the IN792 superalloy at 1100 °C, using multiple microscopic techniques and thermodynamics calculations. Our results showed an excellent agreement between experiments and thermodynamics simulations, indicating the dominant role of Al on the initial diffusion-induced phase transitions. We proposed the Al-Cr interference effect to account for the pile-up behavior of Cr and the reduced Al content near the coating/superalloy interface. The local phase equilibrium calculations revealed that the γ′ depletion in the superalloy is primarily attributed to the loss of γ′-forming elements, such as Ta and Ti. Our findings opened up an avenue for studies on the superalloy/coating interdiffusion, contributing to reducing this damaging impact.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Keyword
- Interdiffusion
- Microstructural degradation
- Bond coating
- Thermodynamics
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Sun, Xiaoyu
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Li, Xiaolong, 19 ...
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Guo, Sheng, 1981
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Yu, Xin
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Zhu, Lilong
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Teng, Jianwei
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show more...
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Jiang, Liang
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Moverare, Johan
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Li, Xin Hai
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Peng, Ru Lin
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
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and Metallurgy and M ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
- Articles in the publication
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Materials and De ...
- By the university
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Chalmers University of Technology
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Linköping University