Microstructure and tensile properties of tungsten at elevated temperatures
文献类型：期刊论文
| 作者 | Shen, Tielong1,2; Dai, Yong1; Lee, Yongjoong3 |
| 刊名 | JOURNAL OF NUCLEAR MATERIALS
 |
| 出版日期 | 2016 |
| 卷号 | 468页码:348-354 |
| 关键词 | Spallation neutron source Spallation target Tungsten Tensile properties Metallography |
| ISSN号 | 0022-3115 |
| DOI | 10.1016/j.jnucmat.2015.09.057 |
| 英文摘要 | In order to support the development of the 5 MW spallation target for the European Spallation Source, the effect of fabrication process on microstructure, ductile-to-brittle transition temperature (DBTT), tensile and fracture behaviour of powder-metallurgy pure tungsten materials has been investigated. A hot-rolled (HR) tungsten piece of 12 mm thickness and a hot-forged (HF) piece of about 80 mm thickness were used to simulate the thin and thick blocks in the target. The two tungsten pieces were characterized with metallography analysis, hardness measurement and tensile testing. The HR piece exhibits an anisotropic grain structure with an average size of about 330 x 140 x 40 mu m in rolling, long transverse and short transverse (thickness) directions. The HF piece possesses a bimodal grain structure with about 310 x 170 x 70 mu m grain size in deformed part and about 25 mu m sized grains remained from sintering process. Hardness (HV0.2) of the HR piece is slightly greater than that of the HF one. The ductility of the HR tungsten specimens is greater than that of the HF tungsten. For the HF tungsten piece, specimens with small grains in gauge section manifest lower ductility but higher strength. The DBTT evaluated from the tensile results is 250-300 degrees C for the HR tungsten and about 350 degrees C for the HF tungsten. (c) 2015 Elsevier B.V. All rights reserved. |
| WOS关键词 | MECHANICAL-PROPERTIES |
| 资助项目 | Swiss Staatssekretariat fur Bildung, Forschung und Innovation |
| WOS研究方向 | Materials Science ; Nuclear Science & Technology ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000367761700044 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Swiss Staatssekretariat fur Bildung, Forschung und Innovation |
| 源URL | [http://119.78.100.186/handle/113462/41421]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Dai, Yong |
| 作者单位 | 1.Paul Scherrer Inst, Lab Nucl Mat, CH-5232 Villigen, Switzerland 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.European Spallat Source, S-22363 Lund, Sweden |
| 推荐引用方式 GB/T 7714 | Shen, Tielong,Dai, Yong,Lee, Yongjoong. Microstructure and tensile properties of tungsten at elevated temperatures[J]. JOURNAL OF NUCLEAR MATERIALS,2016,468:348-354. |
| APA | Shen, Tielong,Dai, Yong,&Lee, Yongjoong.(2016).Microstructure and tensile properties of tungsten at elevated temperatures.JOURNAL OF NUCLEAR MATERIALS,468,348-354. |
| MLA | Shen, Tielong,et al."Microstructure and tensile properties of tungsten at elevated temperatures".JOURNAL OF NUCLEAR MATERIALS 468(2016):348-354. |
入库方式： OAI收割
来源：近代物理研究所
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