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タイトル: | Microstructure and performance of rare earth element-strengthened plasma-facing tungsten material |
著者: | Luo, Laima Shi, Jing Lin, Jinshan Zan, Xiang Zhu, Xiaoyong Xu, Qiu Wu, Yucheng |
著者名の別形: | 徐, 虬 |
キーワード: | Composites Metals and alloys |
発行日: | 6-Sep-2016 |
出版者: | Springer Nature |
誌名: | Scientific Reports |
巻: | 6 |
論文番号: | 32701 |
抄録: | Pure W and W-(2%, 5%, 10%) Lu alloys were manufactured via mechanical alloying for 20 h and a spark plasma sintering process at 1, 873 K for 2 min. The effects of Lu doping on the microstructure and performance of W were investigated using various techniques. For irradiation performance analysis, thermal desorption spectroscopy (TDS) measurements were performed from room temperature to 1, 000 K via infrared irradiation with a heating rate of 1 K/s after implantations of He+ and D+ ions. TDS measurements were conducted to investigate D retention behavior. Microhardness was dramatically enhanced, and the density initially increased and then decreased with Lu content. The D retention performance followed the same trend as the density. Second-phase particles identified as Lu2O3 particles were completely distributed over the W grain boundaries and generated an effective grain refinement. Transgranular and intergranular fracture modes were observed on the fracture surface of the sintered W-Lu samples, indicating some improvement of strength and toughness. The amount and distribution of Lu substantially affected the properties of W. Among the investigated alloy compositions, W-5%Lu exhibited the best overall performance. |
著作権等: | © The Author(s) 2016 This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. |
URI: | http://hdl.handle.net/2433/227068 |
DOI(出版社版): | 10.1038/srep32701 |
PubMed ID: | 27596002 |
出現コレクション: | 学術雑誌掲載論文等 |
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