Effects of cold-treatment and strain-rate on mechanical properties of NbTi/Cu superconducting composite wires
文献类型：期刊论文
| 作者 | Guan, Mingzhi1,2; Wang, Xingzhe1; Zhou, Youhe1 |
| 刊名 | SPRINGERPLUS
 |
| 出版日期 | 2015-02-13 |
| 卷号 | 4页码:7 |
| 关键词 | NbTi/Cu composite wires Effect of cold-treatment Strain-rate Tensile response Mechanical property |
| ISSN号 | 2193-1801 |
| DOI | 10.1186/s40064-015-0860-7 |
| 英文摘要 | During design and winding of superconducting magnets at room temperature, a pre-tension under different rate is always applied to improve the mechanical stability of the magnets. However, an inconsistency rises for superconductors usually being sensitive to strain and oversized pre-stress which results in degradation of the superconducting composites' critical performance at low temperature. The present study focused on the effects of the cold-treatment and strain-rate of tension deformation on mechanical properties of NbTi/Cu superconducting composite wires. The samples were immersed in a liquid nitrogen (LN2) cryostat for the adiabatic cold-treatment, respectively with 18-hour, 20-hour, 22-hour and 24-hour. A universal testing machine was utilized for tension tests of the NbTi/Cu superconducting composite wires at room temperature; a small-scale extensometer was used to measure strain of samples with variable strain-rate. The strength, elongation at fracture and yield strength of pre-cold-treatment NbTi/Cu composite wires were drawn. It was shown that, the mechanical properties of the superconducting wires are linearly dependent on the holding time of cold-treatment at lower tensile strain-rate, while they exhibit notable nonlinear features at higher strain-rate. The cold-treatment in advance and the strain-rate of pre-tension demonstrate remarkable influences on the mechanical property of the superconducting composite wires. |
| WOS关键词 | BENDING STRAIN ; TOLERANCE ; IMPROVEMENT ; MAGNET ; TAPES |
| 资助项目 | National Natural Science Foundation of China[11302225] ; National Natural Science Foundation of China[11032006] ; Foundation for Innovative Research Groups of National Natural Science Foundation of China[11121202] ; National Key Project of Magneto-Constrained Fusion Energy Development Program[2013GB110002] ; China Postdoctoral Science Foundation[2014 M560820] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000359157900005 |
| 出版者 | SPRINGER INTERNATIONAL PUBLISHING AG |
| 资助机构 | National Natural Science Foundation of China ; Foundation for Innovative Research Groups of National Natural Science Foundation of China ; National Key Project of Magneto-Constrained Fusion Energy Development Program ; China Postdoctoral Science Foundation |
| 源URL | [http://119.78.100.186/handle/113462/40387]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Wang, Xingzhe |
| 作者单位 | 1.Lanzhou Univ, Coll Civil Engn & Mech, Minist Educ China, Key Lab Mech Environm & Disaster Western China, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guan, Mingzhi,Wang, Xingzhe,Zhou, Youhe. Effects of cold-treatment and strain-rate on mechanical properties of NbTi/Cu superconducting composite wires[J]. SPRINGERPLUS,2015,4:7. |
| APA | Guan, Mingzhi,Wang, Xingzhe,&Zhou, Youhe.(2015).Effects of cold-treatment and strain-rate on mechanical properties of NbTi/Cu superconducting composite wires.SPRINGERPLUS,4,7. |
| MLA | Guan, Mingzhi,et al."Effects of cold-treatment and strain-rate on mechanical properties of NbTi/Cu superconducting composite wires".SPRINGERPLUS 4(2015):7. |
入库方式： OAI收割
来源：近代物理研究所
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