Oxidation behavior of a low-cost second-generation Ni-based single crystal superalloy at 900 °C and 1000 °C
The temperature dependence on the oxide layer and the oxidation mechanism was systematically investigated at 900 °C and 1000 °C in a low-cost second-generation Ni-based single crystal superalloy. The oxidation kinetics could be divided into three stages. The initial stage followed a parabolic law wi...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424029168 |
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| _version_ | 1832595344749232128 |
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| author | Haitao Fu Wenchao Yang Qiang Wang Chen Liu Jiarun Qin Yuzhang Lu Jian Shen Haijun Su Lin Liu |
| author_facet | Haitao Fu Wenchao Yang Qiang Wang Chen Liu Jiarun Qin Yuzhang Lu Jian Shen Haijun Su Lin Liu |
| author_sort | Haitao Fu |
| collection | DOAJ |
| description | The temperature dependence on the oxide layer and the oxidation mechanism was systematically investigated at 900 °C and 1000 °C in a low-cost second-generation Ni-based single crystal superalloy. The oxidation kinetics could be divided into three stages. The initial stage followed a parabolic law with an activation energy of 60.08 kJ mol−1. A linear law was observed in the second stage due to the formation of Al2O3. However, the last stage showed different trends, following an almost flat linear law at 900 °C, while an abnormal increase was observed at 1000 °C. The difference was attributed to the rapid growth of intermediate layer at 1000 °C, while the slight increase at 900 °C resulted in higher growth stress at 1000 °C. Meanwhile, the thermal stress was generated during the cooling process of specimens, which promoted the spallation of the oxide layer. As a result, the spallation of the oxide layer was more severe at 1000 °C, causing the abnormal increase of oxidation kinetics at this stage. |
| format | Article |
| id | doaj-art-a4ee9c5c0dd54c8e832faae995dd3064 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-a4ee9c5c0dd54c8e832faae995dd30642025-01-19T06:25:31ZengElsevierJournal of Materials Research and Technology2238-78542025-01-0134797806Oxidation behavior of a low-cost second-generation Ni-based single crystal superalloy at 900 °C and 1000 °CHaitao Fu0Wenchao Yang1Qiang Wang2Chen Liu3Jiarun Qin4Yuzhang Lu5Jian Shen6Haijun Su7Lin Liu8State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072, China; Corresponding author.State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072, ChinaInstitute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, ChinaInstitute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072, ChinaThe temperature dependence on the oxide layer and the oxidation mechanism was systematically investigated at 900 °C and 1000 °C in a low-cost second-generation Ni-based single crystal superalloy. The oxidation kinetics could be divided into three stages. The initial stage followed a parabolic law with an activation energy of 60.08 kJ mol−1. A linear law was observed in the second stage due to the formation of Al2O3. However, the last stage showed different trends, following an almost flat linear law at 900 °C, while an abnormal increase was observed at 1000 °C. The difference was attributed to the rapid growth of intermediate layer at 1000 °C, while the slight increase at 900 °C resulted in higher growth stress at 1000 °C. Meanwhile, the thermal stress was generated during the cooling process of specimens, which promoted the spallation of the oxide layer. As a result, the spallation of the oxide layer was more severe at 1000 °C, causing the abnormal increase of oxidation kinetics at this stage.http://www.sciencedirect.com/science/article/pii/S2238785424029168Ni-based single crystal superalloyOxidation behaviorOxidation kineticsOxide layer |
| spellingShingle | Haitao Fu Wenchao Yang Qiang Wang Chen Liu Jiarun Qin Yuzhang Lu Jian Shen Haijun Su Lin Liu Oxidation behavior of a low-cost second-generation Ni-based single crystal superalloy at 900 °C and 1000 °C Journal of Materials Research and Technology Ni-based single crystal superalloy Oxidation behavior Oxidation kinetics Oxide layer |
| title | Oxidation behavior of a low-cost second-generation Ni-based single crystal superalloy at 900 °C and 1000 °C |
| title_full | Oxidation behavior of a low-cost second-generation Ni-based single crystal superalloy at 900 °C and 1000 °C |
| title_fullStr | Oxidation behavior of a low-cost second-generation Ni-based single crystal superalloy at 900 °C and 1000 °C |
| title_full_unstemmed | Oxidation behavior of a low-cost second-generation Ni-based single crystal superalloy at 900 °C and 1000 °C |
| title_short | Oxidation behavior of a low-cost second-generation Ni-based single crystal superalloy at 900 °C and 1000 °C |
| title_sort | oxidation behavior of a low cost second generation ni based single crystal superalloy at 900 °c and 1000 °c |
| topic | Ni-based single crystal superalloy Oxidation behavior Oxidation kinetics Oxide layer |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424029168 |
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