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논문 기본 정보

자료유형
학술저널
저자정보
김규태 (The School of Metallurgical and Materials Eng., Sungkyunkwan University) 임준형 (The School of Metallurgical and Materials Eng., Sungkyunkwan University) 김정호 (The School of Metallurgical and Materials Eng., Sungkyunkwan University) 장석헌 (The School of Metallurgical and Materials Eng., Sungkyunkwan University) 김호진 (The School of Metallurgical and Materials Eng., Sungkyunkwan University) 주진호 (The School of Metallurgical and Materials Eng., Sungkyunkwan University) 김찬중 (Nuclear Material Development Team, Korea Atomic Energy Research Institute) 송규정 (Applied Superconductivity Research Group, Korea Electrotechnology Research Institute) 신형섭 (The School of Mechanical Eng., Andong National University)
저널정보
한국초전도학회 Progress in superconductivity Progress in superconductivity 제6권 제1호
발행연도
2004.1
수록면
64 - 68 (5page)

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We fabricated cube-textured Ni and Ni-W alloy substrates for coated conductors and characterized the effects of W addition on microstructure, mechanical strength, and magnetic properties of the substrate. Pure Ni and Ni-(2, 3, 5at.%)W alloys were prepared by plasma arc melting, heavily cold rolled and then annealed at various temperatures of $600-1300^{\circ}C$. The texture was evaluated by pole-figure and orientation distribution function (ODF) analysis. Mechanical properties were investigated by micro Vickers hardness and tension test. Ferromagnetism of the substrate was measured by physical property measurement system (PPMS). It was observed that Ni-W substrates had sharp cube texture, and the full-width at half-maximums (FWHMs) of in-plane texture was $^{\circ}$-5.57$4.42^{\circ}$, which is better than that of pure Ni substrate. In addition cube texture of Ni-W substrates was retained at higher temperature up to $1300^{\circ}C$. Microstructural observation showed that the Ni-W substrates had fine grain size and higher mechanical properties than the pure Ni substrate. These improvements are probably due to strengthening mechanisms such as solid solution hardening and/or grain size strengthening. PPMS analysis showed that addition of W effectively reduced saturation magnetization in applied magnetic field and Curie temperature.

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