Heavily cold worked high-purity Ta as a reinforcing stabilizer
Heavily cold worked high-purity Ta as a reinforcing stabilizer
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作为强化稳定剂的深度冷加工高纯钽
DOI：
10.1109/20.120019
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发表时间：
1992
影响因子：
2.1
通讯作者：
K. Watanabe
中科院分区：
文献类型：
--
作者：
M. Matsukawa;K. Noto;K. Katagiri;N. Matsuura;M. Ikebe;C. Takahashi;T. Fukutsuka;K. Watanabe
对经过大量冷加工的高纯度钽丝的机械和电气性能进行了研究。室温拉伸试验显示0.2%屈服强度较大，约为70 kg/mm/sup 2/，这可能是拉丝过程中的加工硬化造成的。使用扫描电子显微镜观察断裂表面表明该材料具有很好的延展性。而且，即使在15T的高场下，该样品也具有约0.4μΩ·cm的低电阻率。残余电阻率比约为80，这与样品的高纯度相一致。因此，发现冷加工Ta线适用于大型和/或高场超导磁体的导体的增强稳定器。 >
Mechanical and electrical properties have been studied for a heavily cold-worked high-purity Ta wire. Tensile test at room temperature shows a large 0.2% proof stress of about 70 kg/mm/sup 2/, which is probably caused by work-hardening in the wire drawing process. Observations of fracture surfaces using a scanning electron microscope indicate that this material is very ductile. Moreover, this sample has a low resistivity of about 0.4 mu Omega -cm even at the high field of 15 T. The residual resistivity ratio is about 80, which is consistent with the high purity of the sample. Therefore, it has been found that the cold-worked Ta wire is applicable to a reinforcing stabilizer for conductors of large-scale and/or high-field superconducting magnets. >