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Oxidation behavior ...
Oxidation behavior of Ni-based superalloy GH4738 under tensile stress
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- Hu, Ji-Chong (author)
- Yantai Univ, Peoples R China
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- Huang, Hai-Liang (author)
- Yantai Univ, Peoples R China
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- Wu, Chong-Chong (author)
- Yantai Univ, Peoples R China
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- Sun, Xiao-Yu (author)
- Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten
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- Wang, Jie (author)
- Yantai Univ, Peoples R China
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- Yang, Yan-Hong (author)
- Chinese Acad Sci, Peoples R China
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- Qu, Jing-Long (author)
- Gaona Aero Mat Co Ltd, Peoples R China
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- Jiang, Liang (author)
- Yantai Univ, Peoples R China
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- Dou, Jin-He (author)
- Shandong First Med Univ & Shandong Acad Med Sci, Peoples R China
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- Chen, Yang (author)
- Yantai Univ, Peoples R China
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: Rare Metals. - : NONFERROUS METALS SOC CHINA. - 1001-0521 .- 1867-7185.
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Revealing the oxidation behavior of superalloys is crucial for optimizing material properties and extending service life. This study investigated the oxidation behavior of superalloy GH4738 under stress states at 850 degrees C. High-throughput specimens were fabricated to withstand different stresses at the same time. Isothermal oxidation samples were analyzed using the mass gain method to obtain oxidation kinetic curves. The results show that the external stress below 200 MPa could improve the oxidation resistance of the GH4738. With tensile stress increasing, the oxide layer becomes thinner, denser and more complete, while internal oxidation decreases. The tensile stress alters the structure of the external oxide layer from a two-layer to a three-layer configuration. The Cr2O3 oxide layer inhibits the outward diffusion of Ti, leading to Ti enrichment at the oxide-matrix interface and altering the oxidation mechanism of GH4738.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Keyword
- Ni-based; Superalloy; Oxidation behavior; Tensile stress; Oxide layer
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Hu, Ji-Chong
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Huang, Hai-Liang
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Wu, Chong-Chong
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Sun, Xiao-Yu
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Wang, Jie
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Yang, Yan-Hong
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show more...
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Qu, Jing-Long
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Jiang, Liang
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Dou, Jin-He
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Chen, Yang
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show less...
- About the subject
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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 ...
- Articles in the publication
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Rare Metals
- By the university
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Linköping University