Effect of molybdenum on isothermal oxidation behavior of 4th generation nickel-based single crystal superalloys
The isothermal oxidation behavior of fourth-generation nickel-based single crystal superalloys with 2-4 wt% Mo content were studied at 900 °C and 1100 °C.At 1100 °C, the oxide layer can be divided into three layers, the outermost layer is Ni–Co oxide, the intermediate layer is spinel and heavy metal...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424002369 |
| _version_ | 1797247854328152064 |
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| author | Weiqi Li Xinbao Zhao Jiachen Xu Hao Liu Yuan Cheng Quanzhao Yue Wanshun Xia Yuefeng Gu Ze Zhang |
| author_facet | Weiqi Li Xinbao Zhao Jiachen Xu Hao Liu Yuan Cheng Quanzhao Yue Wanshun Xia Yuefeng Gu Ze Zhang |
| author_sort | Weiqi Li |
| collection | DOAJ |
| description | The isothermal oxidation behavior of fourth-generation nickel-based single crystal superalloys with 2-4 wt% Mo content were studied at 900 °C and 1100 °C.At 1100 °C, the oxide layer can be divided into three layers, the outermost layer is Ni–Co oxide, the intermediate layer is spinel and heavy metal element oxide, and the innermost layer is Al2O3 layer. With the increase of Mo content, the oxide layer accumulates more growth stress, resulting in more severe spallation. At 900 °C, the oxide layer can be divided into three layers, the outermost layer is Ni–Co oxide, the intermediate layer is Cr–Al oxide, and the innermost layer has obvious selective oxidation of Al element. The volatilization of oxide promotes the diffusion of O into the matrix, thus promoting the oxidation of heavy metal elements in the matrix. With the increase of Mo content, this phenomenon is more obvious. The results show that the increase of Mo content of alloy promotes the oxidation of Mo, W and Re elements, which let the volatilization of the oxide and the spalling of the oxide layer more severe, thus decreasing the oxidation resistance of the alloy. |
| first_indexed | 2024-03-08T09:04:07Z |
| format | Article |
| id | doaj.art-1050e3118cc74dae980c13c3f7ea691f |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-24T20:05:18Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-1050e3118cc74dae980c13c3f7ea691f2024-03-24T06:57:43ZengElsevierJournal of Materials Research and Technology2238-78542024-03-012914531466Effect of molybdenum on isothermal oxidation behavior of 4th generation nickel-based single crystal superalloysWeiqi Li0Xinbao Zhao1Jiachen Xu2Hao Liu3Yuan Cheng4Quanzhao Yue5Wanshun Xia6Yuefeng Gu7Ze Zhang8Institute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, ChinaInstitute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, China; State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China; Corresponding author. Institute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, China.Institute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, ChinaPolytechnic Institute, Zhejiang University, Hangzhou, 310027, Zhejiang, ChinaInstitute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, ChinaInstitute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, ChinaInstitute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, ChinaInstitute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, China; State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China; Corresponding author. Institute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, China.Institute of Superalloys Science and Technology, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, Zhejiang, China; State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, ChinaThe isothermal oxidation behavior of fourth-generation nickel-based single crystal superalloys with 2-4 wt% Mo content were studied at 900 °C and 1100 °C.At 1100 °C, the oxide layer can be divided into three layers, the outermost layer is Ni–Co oxide, the intermediate layer is spinel and heavy metal element oxide, and the innermost layer is Al2O3 layer. With the increase of Mo content, the oxide layer accumulates more growth stress, resulting in more severe spallation. At 900 °C, the oxide layer can be divided into three layers, the outermost layer is Ni–Co oxide, the intermediate layer is Cr–Al oxide, and the innermost layer has obvious selective oxidation of Al element. The volatilization of oxide promotes the diffusion of O into the matrix, thus promoting the oxidation of heavy metal elements in the matrix. With the increase of Mo content, this phenomenon is more obvious. The results show that the increase of Mo content of alloy promotes the oxidation of Mo, W and Re elements, which let the volatilization of the oxide and the spalling of the oxide layer more severe, thus decreasing the oxidation resistance of the alloy.http://www.sciencedirect.com/science/article/pii/S2238785424002369Nickel-based single crystal superalloysMoIsothermal oxidationMicrostructure |
| spellingShingle | Weiqi Li Xinbao Zhao Jiachen Xu Hao Liu Yuan Cheng Quanzhao Yue Wanshun Xia Yuefeng Gu Ze Zhang Effect of molybdenum on isothermal oxidation behavior of 4th generation nickel-based single crystal superalloys Journal of Materials Research and Technology Nickel-based single crystal superalloys Mo Isothermal oxidation Microstructure |
| title | Effect of molybdenum on isothermal oxidation behavior of 4th generation nickel-based single crystal superalloys |
| title_full | Effect of molybdenum on isothermal oxidation behavior of 4th generation nickel-based single crystal superalloys |
| title_fullStr | Effect of molybdenum on isothermal oxidation behavior of 4th generation nickel-based single crystal superalloys |
| title_full_unstemmed | Effect of molybdenum on isothermal oxidation behavior of 4th generation nickel-based single crystal superalloys |
| title_short | Effect of molybdenum on isothermal oxidation behavior of 4th generation nickel-based single crystal superalloys |
| title_sort | effect of molybdenum on isothermal oxidation behavior of 4th generation nickel based single crystal superalloys |
| topic | Nickel-based single crystal superalloys Mo Isothermal oxidation Microstructure |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424002369 |
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