| Effect of Nitrogen Content on the Microstructure and Mechanical Properties of K4169 Alloy | |
| Teng Yujun1,2; Ou Meiqiong1; Xing Weiwei1; Ma Yingche1; Liu Kui1 | |
| Corresponding Author | Ma Yingche(ycma@imr.ac.cn) |
| 2019-05-01 | |
| Source Publication | RARE METAL MATERIALS AND ENGINEERING
 |
| ISSN | 1002-185X |
| Volume | 48Issue:5Pages:1505-1516 |
| Abstract | The influence of nitrogen content on the microstructure and mechanical properties of superalloy K4169 was investigated through Thermo-Calc calculation, DSC analysis and quenching experiments with optical microscopy (OM), scanning electronic microscopy (SEM), electron-probe micro-analyzer (EPMA) and transmission electron microscope (TEM). The results indicate that when the content of nitrogen in the alloy increases from 17 to 100 mu g/g, the precipitation temperature and the quantities of carbides and nitrides are also increased. Moreover it has been proved that the morphologies and amount of carbides can be greatly affected by the content of the nitrogen. A number of large bar-like carbides can be identified when the N content is less than 50 mu g/g and this number is decreased significantly when the content of N is increased to 70 and 100 mu g/g. With the increasing content of N, the morphologies of MC carbides are changed from bar-like to block-like. The elevated temperature performance of this alloy can be greatly affected by the N content while the room temperature performance is rarely changed. When the content of N increases from 17 to 100 mu g/g, the creep-rupture life and elongation are decreased from 300 h and 3% to 2.26 h and 2.34%, respectively. Based on this research, as an overall consideration, it is rational to control the N content below 30 mu g/g in K4169 alloy. |
| Keyword | K4169 alloy microstructure mechanical property nitride carbide |
| 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:000470794300021 |
| Publisher | NORTHWEST INST NONFERROUS METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/134078 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Ma Yingche |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China |
| Recommended Citation GB/T 7714 | Teng Yujun,Ou Meiqiong,Xing Weiwei,et al. Effect of Nitrogen Content on the Microstructure and Mechanical Properties of K4169 Alloy[J]. RARE METAL MATERIALS AND ENGINEERING,2019,48(5):1505-1516. |
| APA | Teng Yujun,Ou Meiqiong,Xing Weiwei,Ma Yingche,&Liu Kui.(2019).Effect of Nitrogen Content on the Microstructure and Mechanical Properties of K4169 Alloy.RARE METAL MATERIALS AND ENGINEERING,48(5),1505-1516. |
| MLA | Teng Yujun,et al."Effect of Nitrogen Content on the Microstructure and Mechanical Properties of K4169 Alloy".RARE METAL MATERIALS AND ENGINEERING 48.5(2019):1505-1516. |
| 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