Tailoring microstructural stability and stress rupture properties of a solid-solution strengthened Fe-Ni-based superalloy via niobium addition
文献类型：期刊论文
| 作者 | Wang, J. Q.1,2,3; Wu, J. R.1,2,3; Guan, X. J.2,3; Wu, Y. S.2,3; Cheng, S. H.1,2,3; Qin, X. Z.2,3,4; Zhou, L. Z.2,3 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
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| 出版日期 | 2024-12-15 |
| 卷号 | 1008页码:15 |
| 关键词 | Fe-Ni-based superalloy Niobium Microstructural stability Stress rupture properties Precipitates |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2024.176628 |
| 通讯作者 | Wu, Y. S.(yswu16b@imr.ac.cn) ; Qin, X. Z.(xzqin@nimte.ac.cn) ; Zhou, L. Z.(lzz@imr.ac.cn) |
| 英文摘要 | The influence of niobium (Nb) addition on the microstructural stability and 750 C-degrees /135 MPa stress rupture properties of a solid-solution strengthened Fe-Ni-based superalloy designed for fourth-generation (Gen IV) nuclear reactors was systematically studied. The results showed that the stress rupture life first increased and then decreased with the increase of Nb content. The alloy with the addition of 0.5 wt% Nb exhibited the best stress rupture properties, with a stress rupture life of 164 h. Compared to Nb-free alloy, the stress rupture life has been increased by 382 %. The enhanced creep performance of this alloy was closely related to its excellent high- temperature microstructural stability, which can be explained as follows: homogeneous and optimal grain size distribution, elemental Nb provided good solid-solution strengthening effects, fine granular secondary carbides relieved stress concentration and strengthened grain boundaries (GBs), dynamic precipitation of nano-sized NbC carbides effectively pined dislocations. Dynamic recrystallization (DRX) behavior can be observed in all alloys. The mechanisms related to DRX behavior were discussed, and it was deemed that the smaller average grain size, higher blocky NbC volume fraction, and increased stacking-fault energy (SFE) may be responsible for the facilitated DRX in the alloy with higher Nb content, which greatly caused local softening and consequently, decreasing the creep resistance of the alloy. Important guidance for the further design and development of gamma '-free Fe-Ni-based superalloys for Gen IV nuclear reactors with good high-temperature microstructural stability and creep performance could be summarized from the present study. |
| 资助项目 | Joint Funds of the National Natural Science Foundation of China[U23A6016] ; Science and Technology Innovation 2025 Major Project of Ningbo[2022Z199] ; China Postdoctoral Science Foundation[2023M743570] ; LingChuang Research Project of China National Nuclear Corporation |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001328204200001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | Joint Funds of the National Natural Science Foundation of China ; Science and Technology Innovation 2025 Major Project of Ningbo ; China Postdoctoral Science Foundation ; LingChuang Research Project of China National Nuclear Corporation |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wu, Y. S.; Qin, X. Z.; Zhou, L. Z. |
| 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, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 4.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, J. Q.,Wu, J. R.,Guan, X. J.,et al. Tailoring microstructural stability and stress rupture properties of a solid-solution strengthened Fe-Ni-based superalloy via niobium addition[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2024,1008:15. |
| APA | Wang, J. Q..,Wu, J. R..,Guan, X. J..,Wu, Y. S..,Cheng, S. H..,...&Zhou, L. Z..(2024).Tailoring microstructural stability and stress rupture properties of a solid-solution strengthened Fe-Ni-based superalloy via niobium addition.JOURNAL OF ALLOYS AND COMPOUNDS,1008,15. |
| MLA | Wang, J. Q.,et al."Tailoring microstructural stability and stress rupture properties of a solid-solution strengthened Fe-Ni-based superalloy via niobium addition".JOURNAL OF ALLOYS AND COMPOUNDS 1008(2024):15. |
入库方式： OAI收割
来源：金属研究所
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