| Effect of B on High Temperature Oxidation Behavior of a Nickel-base Superalloy with High Al and Ti Contents | |
| Zhao Guangdi1; Zang Ximin1; Li Wanming1; Xue Chaochao2 | |
| Corresponding Author | Zhao Guangdi(gdzhao12s@alum.imr.ac.cn) |
| 2020-06-01 | |
| Source Publication | RARE METAL MATERIALS AND ENGINEERING
 |
| ISSN | 1002-185X |
| Volume | 49Issue:6Pages:2109-2117 |
| Abstract | Three U720Li ingots with different B contents were produced by vacuum induction melting and afterwards they were fully homogenized. The effect of B on the isothermal oxidation behavior of as-homogenized U720Li alloy at 1100 degrees C was investigated by a discontinuous increasing weight method. After the homogenization treatment, extremely serious B depletion from the alloy matrix is found by ICP-AES, indicating that B could diffuse rapidly towards the oxide scale during high temperature air exposure (above 1100 degrees C). The B addition decreases the oxidation rate and reduces the volume fraction of pores and the thickness of gamma' depleted layer. The scales formed on both low B and high B alloys consist of three layers: the loose outer layer is composed of (Ni/Co)O, TiO2 and complex spinel, the compact intermediate layer is mainly Cr2O3 and discrete internal oxides are Al2O3+TiO2. It is demonstrated that B improves the oxidation resistance mainly by promoting the formation of a more continuous and protective Cr2O3 intermediate layer. |
| Keyword | nickel-base superalloy oxidation boron |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000552452000040 |
| Publisher | NORTHWEST INST NONFERROUS METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/139904 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhao Guangdi |
| Affiliation | 1.Univ Sci & Technol Liaoning, Anshan 114051, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Zhao Guangdi,Zang Ximin,Li Wanming,et al. Effect of B on High Temperature Oxidation Behavior of a Nickel-base Superalloy with High Al and Ti Contents[J]. RARE METAL MATERIALS AND ENGINEERING,2020,49(6):2109-2117. |
| APA | Zhao Guangdi,Zang Ximin,Li Wanming,&Xue Chaochao.(2020).Effect of B on High Temperature Oxidation Behavior of a Nickel-base Superalloy with High Al and Ti Contents.RARE METAL MATERIALS AND ENGINEERING,49(6),2109-2117. |
| MLA | Zhao Guangdi,et al."Effect of B on High Temperature Oxidation Behavior of a Nickel-base Superalloy with High Al and Ti Contents".RARE METAL MATERIALS AND ENGINEERING 49.6(2020):2109-2117. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment