Microstructure and Mechanical Properties of Niobium and 316L Stainless Steel Joints by TU1 Oxygen Free Copper Brazing
文献类型：期刊论文
| 作者 | Wang Ruoxu1,2,3 ; Huang Yulu3; Jiang Tiancai3; Guo Hao3; Xiong Pingran3; Tan Teng3; Yue Weiming3; Zhang Zhouli3; He Yuan3; Zhang Xingyi1,2
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| 刊名 | RARE METAL MATERIALS AND ENGINEERING
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| 出版日期 | 2021-04-01 |
| 卷号 | 50期号:4页码:1166-1172 |
| 关键词 | brazing niobium stainless steel oxygen free copper SRF cavities |
| ISSN号 | 1002-185X |
| 通讯作者 | Tan Teng(ttan@impcas.ac.cn) |
| 英文摘要 | A vacuum brazing technique was used to braze reactor grade niobium and 316L stainless steel with oxygen-free copper as filler materials. Microstructure and mechanical properties of both samples and transition joints at different temperatures were investigated. Results demonstrate that brittle intermetallic layer forms and diffusion phenomenon is observed. In spite of the existence of brittle intermetallic, the brazing joints' application in superconducting radio frequency (SRF) cavities is not affected. Mechanical tests including tensile tests and shear tests were conducted both at room temperature (300 K) and liquid nitrogen temperature (77 K). The tensile strengths at liquid nitrogen temperature are higher than at room temperature, while the shear strengths are reduced due to the formation of brittle intermetallic. The transition joints always have higher mechanical strengths than samples when the thickness of the brazing seam is strictly controlled. Leak tests were also performed on the transition joints. The joints' leak rates are all lower than 1.1x10(-9) Pa.L/s, indicating that the vacuum brazing technology is applicable to high vacuum vessels used at cryogenic temperatures, such as stainless steel helium vessel for SRF cavities. |
| 资助项目 | National Natural Science Foundation of China[11872196] ; Key Research Project of Frontier Science from Chinese Academy of Sciences[QYZDY-SSW-JSC019] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000651535100008 |
| 出版者 | NORTHWEST INST NONFERROUS METAL RESEARCH |
| 资助机构 | National Natural Science Foundation of China ; Key Research Project of Frontier Science from Chinese Academy of Sciences |
| 源URL | [http://119.78.100.186/handle/113462/137238]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Tan Teng |
| 作者单位 | 1.Lanzhou Univ, Coll Civil Engn & Mech, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Key Lab Mech Disaster & Environm Western China, Minist Educ China, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Ruoxu,Huang Yulu,Jiang Tiancai,et al. Microstructure and Mechanical Properties of Niobium and 316L Stainless Steel Joints by TU1 Oxygen Free Copper Brazing[J]. RARE METAL MATERIALS AND ENGINEERING,2021,50(4):1166-1172. |
| APA | Wang Ruoxu.,Huang Yulu.,Jiang Tiancai.,Guo Hao.,Xiong Pingran.,...&Zhang Xingyi.(2021).Microstructure and Mechanical Properties of Niobium and 316L Stainless Steel Joints by TU1 Oxygen Free Copper Brazing.RARE METAL MATERIALS AND ENGINEERING,50(4),1166-1172. |
| MLA | Wang Ruoxu,et al."Microstructure and Mechanical Properties of Niobium and 316L Stainless Steel Joints by TU1 Oxygen Free Copper Brazing".RARE METAL MATERIALS AND ENGINEERING 50.4(2021):1166-1172. |
入库方式： OAI收割
来源：近代物理研究所
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