Microstructure and high-temperature oxidation resistance of wire and arc additively manufactured Si-containing 9Cr oxide dispersion strengthened steel
Three 9Cr oxide dispersion strengthened (ODS) steels with addition of 0.5–2 wt% Si were fabricated by wire and arc additive manufacturing (WAAM) technique in this work. Their microstructures and oxidation behavior at 800 °C were systematically studied. The WAAM-processed steels exhibited refined mar...
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Elsevier
2025-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425011482 |
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| author | Shengming Yin Xiaoling Liu Lihong Xue Hefei Huang Youwei Yan |
| author_facet | Shengming Yin Xiaoling Liu Lihong Xue Hefei Huang Youwei Yan |
| author_sort | Shengming Yin |
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| description | Three 9Cr oxide dispersion strengthened (ODS) steels with addition of 0.5–2 wt% Si were fabricated by wire and arc additive manufacturing (WAAM) technique in this work. Their microstructures and oxidation behavior at 800 °C were systematically studied. The WAAM-processed steels exhibited refined martensite lath bundles due to rapid solidification. Increasing Si content (1–2 wt.%) further refined martensitic laths, enhanced dislocation density, and promoted the formation of high-density (∼6.54 × 1023 m−3) Y2SiO5 nano-oxides (∼3.43 nm) within the matrix. Notably, the 2Si steel demonstrated exceptional oxidation resistance, with a rate of 0.36 × 10−3 mg cm−2 h−1, surpassing most commercial heat-resistant steels. This improvement is attributed to a tri-layered Cr1.5Mn1.5O4/Cr2O3/SiO2(amorphous) oxide scale, which effectively inhibits oxygen inward diffusion. |
| format | Article |
| id | doaj-art-41ab8075b8a749488e56e4736f778f1a |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-41ab8075b8a749488e56e4736f778f1a2025-08-20T02:16:02ZengElsevierJournal of Materials Research and Technology2238-78542025-05-01367069708010.1016/j.jmrt.2025.04.327Microstructure and high-temperature oxidation resistance of wire and arc additively manufactured Si-containing 9Cr oxide dispersion strengthened steelShengming Yin0Xiaoling Liu1Lihong Xue2Hefei Huang3Youwei Yan4State Key Laboratory of Materials Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China; School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China; Corresponding author. State Key Laboratory of Materials Processing and Die & Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.Three 9Cr oxide dispersion strengthened (ODS) steels with addition of 0.5–2 wt% Si were fabricated by wire and arc additive manufacturing (WAAM) technique in this work. Their microstructures and oxidation behavior at 800 °C were systematically studied. The WAAM-processed steels exhibited refined martensite lath bundles due to rapid solidification. Increasing Si content (1–2 wt.%) further refined martensitic laths, enhanced dislocation density, and promoted the formation of high-density (∼6.54 × 1023 m−3) Y2SiO5 nano-oxides (∼3.43 nm) within the matrix. Notably, the 2Si steel demonstrated exceptional oxidation resistance, with a rate of 0.36 × 10−3 mg cm−2 h−1, surpassing most commercial heat-resistant steels. This improvement is attributed to a tri-layered Cr1.5Mn1.5O4/Cr2O3/SiO2(amorphous) oxide scale, which effectively inhibits oxygen inward diffusion.http://www.sciencedirect.com/science/article/pii/S2238785425011482Wire and arc additive manufacturing (WAAM)Oxide dispersion-strengthened steelSilicon alloyingHigh-temperature oxidation |
| spellingShingle | Shengming Yin Xiaoling Liu Lihong Xue Hefei Huang Youwei Yan Microstructure and high-temperature oxidation resistance of wire and arc additively manufactured Si-containing 9Cr oxide dispersion strengthened steel Journal of Materials Research and Technology Wire and arc additive manufacturing (WAAM) Oxide dispersion-strengthened steel Silicon alloying High-temperature oxidation |
| title | Microstructure and high-temperature oxidation resistance of wire and arc additively manufactured Si-containing 9Cr oxide dispersion strengthened steel |
| title_full | Microstructure and high-temperature oxidation resistance of wire and arc additively manufactured Si-containing 9Cr oxide dispersion strengthened steel |
| title_fullStr | Microstructure and high-temperature oxidation resistance of wire and arc additively manufactured Si-containing 9Cr oxide dispersion strengthened steel |
| title_full_unstemmed | Microstructure and high-temperature oxidation resistance of wire and arc additively manufactured Si-containing 9Cr oxide dispersion strengthened steel |
| title_short | Microstructure and high-temperature oxidation resistance of wire and arc additively manufactured Si-containing 9Cr oxide dispersion strengthened steel |
| title_sort | microstructure and high temperature oxidation resistance of wire and arc additively manufactured si containing 9cr oxide dispersion strengthened steel |
| topic | Wire and arc additive manufacturing (WAAM) Oxide dispersion-strengthened steel Silicon alloying High-temperature oxidation |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425011482 |
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