Study on Fabrication of Ni-5 at.%W Tapes for Coated Conductors from Cylinder Ingots
Study on Fabrication of Ni-5 at.%W Tapes for Coated Conductors from Cylinder Ingots
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DOI：
10.1109/tasc.2014.2379115
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发表时间：
2015-06
影响因子：
1.8
通讯作者：
L. Ma;H. Suo;Y. Zhao;A. Wulff;Y. R. Liang;J. Grivel
中科院分区：
文献类型：
--
作者：
L. Ma;H. Suo;Y. Zhao;A. Wulff;Y. R. Liang;J. Grivel
利用Rabits技术，从圆柱形铸锭出发，制备了具有强立方织构的Ni-5at.%W(Ni5W)带材。与传统的长方体钢锭相比，圆柱形钢锭沿轴向没有各向异性，因此，在大量冷轧过程中，所得到的带材将具有沿钢锭边缘的较低应力集中的特征。它可以降低制造成本，提高工艺效率。用EBSD技术研究了最终再结晶带材表面立方织构的比例。结果表明，在与理想的{0 0 1}〈10 0〉取向成10°范围内，立方织构的比例约为98%，LAGBs的比例约为90%。所获得的带材具有很强的立方织构，也非常接近带材的边缘，因此它们将增加适用材料的比例，同时简化繁重的轧制过程。因此，对于大多数小规模的研究实验室来说，这种制备方法是一种很好的选择，因为它可以以一种简单的方法和较高的适用材料比例获得长长的Ni5W涂层导体带材。
Ni-5 at.%W (Ni5W) tapes with a strong cube texture were fabricated using the RABiTS technique and by starting from cylindrical shaped ingots. In contrast to a conventional cuboid-shaped ingot, a cylinder shaped ingot has no anisotropy along the axial direction and the resulting tape will therefore, during heavy cold rolling, be characterized by a lower concentration of stress along the edges of the ingot. It can reduce fabrication costs and increase process efficiency. The fraction of cube texture on the surface of the finally recrystallized tapes was investigated using the EBSD technique. It was observed that the fraction of cube texture within 10° from the ideal {001}〈100〉 orientation was ~98% and the fraction of LAGBs was ~90%. The as-obtained tapes have a strong cube texture also very close to the edge of the tape and they would therefore increase the fraction of applicable material while simplifying the heavy rolling process. Accordingly, it suggests that this fabrication method is a good choice to most small scale research laboratories for achieving long length Ni5W tapes for coated conductors with an easy way and a higher fraction of applicable material.