In Situ Small-Angle Neutron Scattering Study of Precipitation and Evolution Behavior of Secondary Phases in Ni-Based Superalloys
文献类型：期刊论文
| 作者 | Li Yawei1; Xie Guang1; Ke Yubin2,3; Lu Yuzhang1; Huang Yaqi1; Zhang Jian1 |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2024-08-11 |
| 卷号 | 60期号:8页码:1100-1108 |
| 关键词 | GH4169 heat treatment small-angle neutron scattering second phase precipitation and evolution behavior |
| ISSN号 | 0412-1961 |
| DOI | 10.11900/0412.1961.2024.00068 |
| 通讯作者 | Xie Guang(gxie@imr.ac.cn) ; Zhang Jian(jianzhang@imr.ac.cn) |
| 英文摘要 | The gamma' and gamma'' phases are crucial strengthening components in Ni-based superalloys. Understanding their precipitation and evolution mechanism during heat treatment is essential for tailoring the mechanical properties of the superalloys. Herein, GH4169 superalloy was used to investigate the precipitation and evolution behaviors of secondary phases during in situ standard heat treatment by time-of-flight small-angle neutron scattering. Further, transmission electron microscopy was employed to observe the secondary phases generated in samples after ex situ heat treatment. Results showed that the secondary phases, including the spherical.' phase and coprecipitates (mainly the gamma''/gamma'/gamma'' sandwich structure), mostly occurred during the aging treatment. After the formation of coprecipitates during the first aging treatment (AT1), their quantity apparently remained stable during the second aging treatment (AT2). Furthermore, the average size of the gamma' phase and coprecipitates gradually increased during the AT1 stage while remaining almost constant during the AT2 stage. Throughout the aging process, the interface between spherical.' phase and. matrix exhibited a decreased composition fluctuation, while the interface fluctuation of coprecipitates was always significant. Thus, it can be inferred that the precipitation and evolution behaviors of secondary phases are controlled by the element diffusion at the interface. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001281277300009 |
| 出版者 | SCIENCE PRESS |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Xie Guang; Zhang Jian |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Spallat Neutron Source Sci Ctr, Dongguan 523803, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Yawei,Xie Guang,Ke Yubin,et al. In Situ Small-Angle Neutron Scattering Study of Precipitation and Evolution Behavior of Secondary Phases in Ni-Based Superalloys[J]. ACTA METALLURGICA SINICA,2024,60(8):1100-1108. |
| APA | Li Yawei,Xie Guang,Ke Yubin,Lu Yuzhang,Huang Yaqi,&Zhang Jian.(2024).In Situ Small-Angle Neutron Scattering Study of Precipitation and Evolution Behavior of Secondary Phases in Ni-Based Superalloys.ACTA METALLURGICA SINICA,60(8),1100-1108. |
| MLA | Li Yawei,et al."In Situ Small-Angle Neutron Scattering Study of Precipitation and Evolution Behavior of Secondary Phases in Ni-Based Superalloys".ACTA METALLURGICA SINICA 60.8(2024):1100-1108. |
入库方式： OAI收割
来源：金属研究所
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