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Impeding the γ' dep...
Impeding the γ' depletion during the interdiffusion between bond coatings and superalloys via introduction of tantalum in bond coatings
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- Sun, Xiaoyu (författare)
- Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten
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- Zhang, Pimin (författare)
- Alloyed-OxMet Technologies, OX5 1QU Oxford, England, United Kingdom
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- Moverare, Johan, Professor, 1973- (författare)
- Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten
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- Li, Xin-Hai (författare)
- Siemens Energy AB, SE-61283 Finspång, Sweden
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- Cui, Luqing (författare)
- School of Mechanical Engineering, Xi'an Jiaotong University, 710049, Xi'an, China
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- Peng, Ru Lin, 1960- (författare)
- Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten
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(creator_code:org_t)
- Elsevier, 2023
- 2023
- Engelska.
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Ingår i: Materials & design. - : Elsevier. - 0264-1275 .- 1873-4197. ; 227
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The use of aluminiferous coatings profoundly improves the service life of superalloys but leads to microstructural degradation of superalloys and thus loss of mechanical properties. In this study, we mod- ified MCrAlY coatings by adding 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 exhibits an outstanding resistance to c0 depletion in the substrate and compa- rable 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- transformation mechanism induced by initial interdiffusion, uncovering the cause of c0 depletion in the substrate and the mechanism behind improving resistance to c0 depletion by Ta addition.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- Bonding coating; Interdiffusion; Microstructural degradation; Thermodynamics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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