| Oxidation behavior of a novel nickel-based single crystal superalloy at elevated temperature | |
| Tan, Z. H.1,2; Wang, X. G.1; Song, W.1; Yang, Y. H.1; Liu, J. L.1; Liu, J. D.1; Yang, L.2; Zhou, Y. Z.1; Sun, X. F.1 | |
| Corresponding Author | Wang, X. G.(xgwang11b@imr.ac.cn) ; Zhou, Y. Z.(yzzhou@imr.ac.cn) ; Sun, X. F.(xfsun@imr.ac.cn) |
| 2020-05-01 | |
| Source Publication | VACUUM
 |
| ISSN | 0042-207X |
| Volume | 175Pages:10 |
| Abstract | The oxidation behavior of a novel low-cost single crystal superalloy was thoroughly studied at high temperature. Three distinctive stages were observed in the oxidation kinetics curve, which corresponded to the different oxide film structures and oxidation mechanisms. The outer NiO grains, several spinels as well as inner Al2O3 layer took shape at first stage while the oxidation dynamics obeyed cubic law. However, the NiO particles began to spall off the specimen surface and the continuity of Al2O3 layer was partly destroyed in the next several hours. The alloy went through severe oxidation weight gaining at second stage which could be rationalized by the severe oxidation of W and Mo. The non-protective NiWO4 and NiMoO4 spinels were surprisingly found and the Al2O3 particles demonstrated the rod-like morphology during this period. The re-formation of dense Al2O3 layer and the volatilization of MoO3 gave rise to the reduction of mass gaining rate in the final stage, additionally, the oxidation kinetics transformed to subparabolic characteristic. Moreover, the experimental alloy exhibited good microstructural stability at elevated temperature, however, the microstructure degradation was considerably serious. The entire thickness of gamma'-free layers had exceeded 0.1 mm on the alloy surface after 200 h oxidation at 1120 degrees C. |
| Keyword | Single crystal superalloys Oxidation mechanism Kinetics Film evolution Microstructure degradation |
| Funding Organization | National Key R&D Program of China ; National Science and Technology Major Project ; National Natural Science Foundation of China (NSFC) ; State Key Lab of Advanced Metals and Materials Open Fund ; Youth Innovation Promotion Association, Chinese Academy of Sciences |
| DOI | 10.1016/j.vacuum.2020.109284 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key R&D Program of China[2017YFA0700704] ; National Science and Technology Major Project[2017-VI-0002-0072] ; National Natural Science Foundation of China (NSFC)[51601192] ; National Natural Science Foundation of China (NSFC)[51671188] ; State Key Lab of Advanced Metals and Materials Open Fund[2018-Z07] ; Youth Innovation Promotion Association, Chinese Academy of Sciences |
| WOS Research Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Multidisciplinary ; Physics, Applied |
| WOS ID | WOS:000524971800027 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/138332 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang, X. G.; Zhou, Y. Z.; Sun, X. F. |
| Affiliation | 1.Chinese Acad Sci, Superalloys Div, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Shenyang Univ Technol, Sch Mat Sci & Engn, 111 Shenliao Rd, Shenyang 110870, Peoples R China |
| Recommended Citation GB/T 7714 | Tan, Z. H.,Wang, X. G.,Song, W.,et al. Oxidation behavior of a novel nickel-based single crystal superalloy at elevated temperature[J]. VACUUM,2020,175:10. |
| APA | Tan, Z. H..,Wang, X. G..,Song, W..,Yang, Y. H..,Liu, J. L..,...&Sun, X. F..(2020).Oxidation behavior of a novel nickel-based single crystal superalloy at elevated temperature.VACUUM,175,10. |
| MLA | Tan, Z. H.,et al."Oxidation behavior of a novel nickel-based single crystal superalloy at elevated temperature".VACUUM 175(2020):10. |
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