| Structure degradation of 25Cr35Ni heat-resistant tube associated with surface coking and internal carburization |
| Wu, XQ; Yang, YS; Zhan, Q; Hu, ZQ
|
| 通讯作者 | Wu, XQ()
|
| 1998-10-01
|
| 发表期刊 | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
 |
| ISSN | 1059-9495
|
| 卷号 | 7期号:5页码:667-672 |
| 摘要 | Microstructures of 25Cr35Ni heat-resistant cracking tube after service were investigated and degradation mechanism of tube material was discussed. Results reveal that three distinguished zones, that is, internal oxide, carbide free, and internally carburized zones, will gradually develop in the inner wall of a cracking tube during service. Carbide free and internally carburized zones are formed primarily in relation to the periodic spalling and regeneration of surface oxide scale, and diffusion velocity of carbon and carbide forming elements in matrix and the solubility limit of carbon in alloy. The formation and growth of filament coke can aggravate structure degradation of the inner wall of the cracking tube, while deposition of lamellar and spheroidal coke may slow structure degradation to some extent, Surface coking and decoking cycles strongly aggravate the structure degradation of tube material and damage the service life of the cracking tube. |
| 关键词 | carburization
coking
heat-resistant alloy
|
| 收录类别 | SCI
|
| 语种 | 英语
|
| WOS研究方向 | Materials Science
|
| WOS类目 | Materials Science, Multidisciplinary
|
| WOS记录号 | WOS:000076210600012
|
| 出版者 | ASM INTERNATIONAL
|
| 引用统计 |
|
| 文献类型 | 期刊论文
|
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/108103
|
| 专题 | 中国科学院金属研究所
|
| 通讯作者 | Wu, XQ |
| 作者单位 | Chinese Acad Sci, Dept Superalloy & Special Casting, Met Res Inst, Shenyang 110015, Peoples R China
|
推荐引用方式
GB/T 7714 |
Wu, XQ,Yang, YS,Zhan, Q,et al. Structure degradation of 25Cr35Ni heat-resistant tube associated with surface coking and internal carburization[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,1998,7(5):667-672.
|
| APA |
Wu, XQ,Yang, YS,Zhan, Q,&Hu, ZQ.(1998).Structure degradation of 25Cr35Ni heat-resistant tube associated with surface coking and internal carburization.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,7(5),667-672.
|
| MLA |
Wu, XQ,et al."Structure degradation of 25Cr35Ni heat-resistant tube associated with surface coking and internal carburization".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE 7.5(1998):667-672.
|
修改评论