Dispersoids and γ′ precipitates in an ultrafine grained René 88DT – 5vol.%Y2O3alloy with outstanding thermal stability
文献类型：期刊论文
| 作者 | Xia, Tian1,2; Yang, Chao3; Zeng, Wei1,2,4; Xie, Yuehuang1,2; Zhang, Yiwen5; Zhang, Deliang1,2,6,7; Zhu, Guoliang1,2; Shu, Da1,2; Lavernia, Enrique J.4 |
| 刊名 | Materials Characterization
 |
| 出版日期 | 2018 |
| 卷号 | 141页码:139-147 |
| ISSN号 | 10445803 |
| DOI | 10.1016/j.matchar.2018.04.027 |
| 英文摘要 | We report on an ultrafine-grained (UFG) René 88DT-5vol.%Y2O3alloy with a high thermal stability fabricated through high energy mechanical milling and thermomechanical powder consolidation. The as-extruded sample consists of an ultrafine grained γ matrix with an average size of 122 nm with Y4Al2O9nanoparticles (average size: 12.6 nm) and TiN particles (size about 150 nm) being dispersed in the matrix. The UFG microstructure of the alloy showed an outstanding thermal stability with the average grain size only increasing slightly from 122 to 145 nm after holding at 1120 °C (0.85Tm, where Tmis the solidus temperature of the alloy in Kelvin scale) for 2 h and subsequently holding at 760 °C for 16 h. Due to the consumption of γ′ forming elements, Ti and Al, by the formation of the Y4Al2O9and TiN dispersoids, the content of γ′ precipitates in the microstructure of the heat treated sample is significantly reduced, as confirmed by experimentation and calculation using the JMatPro software. Additionally, the size of γ′ precipitates also sharply decreased to 20–30 nm in the heat treated UFG René 88DT-5vol.%Y2O3alloy, in contrast to a size of 100–150 nm in the Y2O3-free base alloy under the same heat treatment condition. © 2018 |
| 出版者 | Elsevier Inc. |
| 源URL | [http://ir.sic.ac.cn/handle/331005/25169]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai; 200240, China; 2.Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming, Shanghai Jiao Tong University, Shanghai; 200240, China; 3.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai; 201800, China; 4.Department of Chemical Engineering & Materials Science, University of California, Irvine; CA; 92607, United States; 5.High Temperature Material Research Institute, Central Iron & Steel Research Institute, Beijing; 100081, China; 6.Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials Science and Engineering, Northeastern University, Shenyang; 110819, China; 7.Institute of Ceramics and Powder Metallurgy, School of Materials Science and Engineering, Northeastern University, Shenyang; 110819, China |
| 推荐引用方式 GB/T 7714 | Xia, Tian,Yang, Chao,Zeng, Wei,et al. Dispersoids and γ′ precipitates in an ultrafine grained René 88DT – 5vol.%Y2O3alloy with outstanding thermal stability[J]. Materials Characterization,2018,141:139-147. |
| APA | Xia, Tian.,Yang, Chao.,Zeng, Wei.,Xie, Yuehuang.,Zhang, Yiwen.,...&Lavernia, Enrique J..(2018).Dispersoids and γ′ precipitates in an ultrafine grained René 88DT – 5vol.%Y2O3alloy with outstanding thermal stability.Materials Characterization,141,139-147. |
| MLA | Xia, Tian,et al."Dispersoids and γ′ precipitates in an ultrafine grained René 88DT – 5vol.%Y2O3alloy with outstanding thermal stability".Materials Characterization 141(2018):139-147. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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