High Temperature Oxidation Mode and Transformation Mechanism of Quaternary Co-Ni-Cr-Al Alloys
文献类型：期刊论文
| 作者 | Lv Yunlei1; Ren Yanjie1,2; Feng Kangkang1; Zhou Mengni1; Wang Wen3; Chen Jian1; Niu Yan1 |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2024-07-11 |
| 卷号 | 60期号:7页码:947-956 |
| 关键词 | Co-Ni-Cr-Al alloy high temperature oxidation oxidation kinetics protective scale |
| ISSN号 | 0412-1961 |
| DOI | 10.11900/0412.1961.2022.00200 |
| 通讯作者 | Ren Yanjie(yjren@csust.edu.cn) |
| 英文摘要 | The addition of Ni to cobalt-based alloys can form the.' phase, which can significantly improve their mechanical properties and high-temperature oxidation resistance. The oxidation behavior of quaternary Co-20Ni-8Cr-xAl (x = 3 or 5, mass fraction, %) alloys was investigated in 1.013 x 10(5) Pa O(2)at 800, 900, 1000, and 1100 degrees C. Also, the effects of Al and/or Cr contents and temperature on the oxidation properties of the alloys were explored by analyzing the oxidation kinetics of the alloys and the crosssectional morphology characteristics of the scales, revealing the oxidation mechanism of these alloys. After oxidation, both the alloys formed complex scales with irregular thickness and composition. Alumina scales were generated for each alloy at 800, 900, and 1000 degrees C and only for Co-20Ni-8Cr-5Al at 1100 degrees C. The increase in temperature from 800oC to 900 degrees C has a negative effect on the oxidation resistance, resulting in greatly accelerated oxidation rates. Conversely, that from 1000 degrees C to 1100 degrees C has a positive effect on the oxidation of the two alloys, causing a decrease in the oxidation rate. The oxidation rate of the Co-NiCr-Al alloy decreases when the Al content in the alloy is increased from 3% to 5%, but 5% is still not sufficient to form continuous alumina scales. The simultaneous presence of Cr and Al is beneficial to reducing the oxidation rate of the quaternary Co-Ni-Cr-Al alloys compared with the ternary Co-Ni-Al alloy with the same Al content. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001260210800009 |
| 出版者 | SCIENCE PRESS |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Ren Yanjie |
| 作者单位 | 1.Changsha Univ Sci & Technol, Coll Energy & Power Engn, Changsha 410076, Peoples R China 2.Zhejiang Univ Sci & Technol, Sch Mech & Energy Engn, Hangzhou 310023, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lv Yunlei,Ren Yanjie,Feng Kangkang,et al. High Temperature Oxidation Mode and Transformation Mechanism of Quaternary Co-Ni-Cr-Al Alloys[J]. ACTA METALLURGICA SINICA,2024,60(7):947-956. |
| APA | Lv Yunlei.,Ren Yanjie.,Feng Kangkang.,Zhou Mengni.,Wang Wen.,...&Niu Yan.(2024).High Temperature Oxidation Mode and Transformation Mechanism of Quaternary Co-Ni-Cr-Al Alloys.ACTA METALLURGICA SINICA,60(7),947-956. |
| MLA | Lv Yunlei,et al."High Temperature Oxidation Mode and Transformation Mechanism of Quaternary Co-Ni-Cr-Al Alloys".ACTA METALLURGICA SINICA 60.7(2024):947-956. |
入库方式： OAI收割
来源：金属研究所
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