The roles of P/B-addition in tailoring δ-phase-enhanced grain boundaries in a nickel-based superalloy
文献类型：期刊论文
| 作者 | Wu, J.1; Liao, G. J.1; Jiang, C. Z.1; Xie, P.2,3; Jia, D.4; Chen, J. H.2,3 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2024-12-15 |
| 卷号 | 1008页码:11 |
| 关键词 | Superalloy Microalloying Grain boundary precipitation Phase transformation Electron microscopy |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2024.176484 |
| 通讯作者 | Xie, P.(xiepan@hainanu.edu.cn) ; Chen, J. H.(jhchen123@hainanu.edu.cn) |
| 英文摘要 | Phosphorus (P) and boron (B) as microalloying elements can play significant roles in improving the hightemperature performance of polycrystalline nickel-based superalloys, but their microscopic mechanism in modifying the alloys' microstructures is still not clarified. Here, we report the distinct roles of P/B elements in tailoring the grain boundary precipitation microstructures of the alloy upon thermal aging. Using advanced electron microscopy techniques, we demonstrate that upon thermal aging P and B can depress development of continuous delta-phase (Ni3Nb) precipitates along grain boundaries by promoting formation of other much smaller grain boundary precipitates. It is identified that these nano-scaled grain boundary precipitates are Nb-B-rich MC carbides, P-rich C14 Laves phase (Ni, Fe, Cr)(2)(Nb, Mo) precipitates, and dispersed delta-phase precipitates. Electron tomography shows that the three nano-scaled grain boundary precipitates all have their own featured threedimensional shapes. In comparison with the alloy without P/B-addition, our study reveals that P/B microalloying can trigger and lead to optimized grain boundary microstructures, enhancing the superalloys' hightemperature properties. |
| 资助项目 | National Natural Science Foundation of China[52361005] ; National Natural Science Foundation of China[U23A20392] ; National Natural Science Foundation of China[12474006] ; National Natural Science Foundation of China[12304008] ; Natural Science Foundation of Hunan Province[2022JJ30146] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001320885400001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of Hunan Province |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Xie, P.; Chen, J. H. |
| 作者单位 | 1.Hunan Univ, Coll Mat Sci & Engn, Ctr High Resolut Electron Microscopy, Changsha 410082, Hunan, Peoples R China 2.Hainan Univ, Innovat Inst Ocean Mat Characterizat Technol, Haikou 570228, Hainan, Peoples R China 3.Hainan Univ, Key Lab Electron Microscopy Hainan Prov P, Haikou 570228, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, J.,Liao, G. J.,Jiang, C. Z.,et al. The roles of P/B-addition in tailoring δ-phase-enhanced grain boundaries in a nickel-based superalloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2024,1008:11. |
| APA | Wu, J.,Liao, G. J.,Jiang, C. Z.,Xie, P.,Jia, D.,&Chen, J. H..(2024).The roles of P/B-addition in tailoring δ-phase-enhanced grain boundaries in a nickel-based superalloy.JOURNAL OF ALLOYS AND COMPOUNDS,1008,11. |
| MLA | Wu, J.,et al."The roles of P/B-addition in tailoring δ-phase-enhanced grain boundaries in a nickel-based superalloy".JOURNAL OF ALLOYS AND COMPOUNDS 1008(2024):11. |
入库方式： OAI收割
来源：金属研究所
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