Effects of boron addition on the microstructure and creep properties of a Ni-Fe-based superalloy weld metal alloy
文献类型：期刊论文
| 作者 | Xie, Wencai1,2; Wu, Dong2; Lu, Shanping2 |
| 刊名 | MATERIALS RESEARCH EXPRESS
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 9期号:2页码:12 |
| 关键词 | superalloy weld metal creep boron M23(C B)6 |
| DOI | 10.1088/2053-1591/ac5078 |
| 通讯作者 | Wu, Dong(wudong@imr.ac.cn) ; Lu, Shanping(shplu@imr.ac.cn) |
| 英文摘要 | The role of boron in the creep properties and grain boundary characteristics in a new Ni-Fe-based weld metal suitable for advanced ultra-supercritical (A-USC) coal-fired power plant applications has been investigated. Ni-Fe-based filler wires without boron and boron-doped (50 ppm wt% boron) were prepared for this study. Boron-doped weld metals exhibited longer rupture lives and lower steady creep rates during the creep rupture tests at 750 degrees C / 380 MPa and 750 degrees C / 210 MPa. This study explains the improvement mechanism of boron on creep resistance from the perspective of the effect of boron on M23C6. Boron increased the nucleation rate of M23C6 and participated in the formation of M-23(C, B)(6) type boron-carbides. After creep deformation, boron still existed stably in the M-23(C, B)(6). The higher density of discrete M23C6 particles due to boron addition could restrain grain boundary crack propagation and grain boundary sliding, and thereby improve the creep fracture resistance of the GH984G weld metal at 750 degrees C / (380/ 210 MPa). |
| 资助项目 | National Natural Science Foundation of China[51901232] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000759839700001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/173387]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wu, Dong; Lu, Shanping |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie, Wencai,Wu, Dong,Lu, Shanping. Effects of boron addition on the microstructure and creep properties of a Ni-Fe-based superalloy weld metal alloy[J]. MATERIALS RESEARCH EXPRESS,2022,9(2):12. |
| APA | Xie, Wencai,Wu, Dong,&Lu, Shanping.(2022).Effects of boron addition on the microstructure and creep properties of a Ni-Fe-based superalloy weld metal alloy.MATERIALS RESEARCH EXPRESS,9(2),12. |
| MLA | Xie, Wencai,et al."Effects of boron addition on the microstructure and creep properties of a Ni-Fe-based superalloy weld metal alloy".MATERIALS RESEARCH EXPRESS 9.2(2022):12. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。