Strong cube texture formation of Ni5W/Ni9.3W/Ni5W composite thin substrates for YBCO-coated conductors

Author:

Liu Jing1,Suo Hongli1,Zhang Zili2,Ji Yaotang1,Li Jiazhi1,Wang Lanjin1,Wang Lei2,Wang Qiuliang2

Affiliation:

1. Key Laboratory of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing, People's Republic of China

2. Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing, People's Republic of China

Abstract

The Ni-5 at.%W/Ni-9.3 at.%W/Ni-5 at.%W alloy composite substrate with a thickness of 109 μm was produced by powder metallurgy and rolling process. The composite substrates with different thicknesses were produced by electrochemically polishing the outer layer of each substrate. When the thickness of the composite substrate was reduced to 72 μm, the cubic texture could still reach 97.3% by using electron backscatter diffraction. Moreover, its saturation magnetization only reached 2.3 (emu/g). Finally, the cubic texture of composite substrates was found to vary in thickness thinning because the grain growth mechanism between the inner and outer layers is different. The inner layer defect has a “pin” effect on grain boundary migration, and in the outer layer, the cubic grain grows more easily to the surface and along the rolling direction. However, the formation of cubic-oriented grains is hindered by the twin defects in the inner layer.

Funder

the General Program of Science and Technology Development Project of Beijing Municipal Education Commission

National Key R&D Program of China

Beijing Municipal Natural Science Foundation

National Natural Science Foundation of China

Magnetic Resonance Union of Chinese Academy of Sciences

The Institute of Electrical Engineering, CAS

Publisher

SAGE Publications

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

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