Influence of Hot Rolling on Cube Texture of Ni Substrate for Coated Conductor
来源期刊：JOURNAL OF RARE EARTHS2006年第5期
论文作者：Liu Huizhou Qu Fei Shi Kai Wang Chaoqun Yang Jian Gu Hongwei
Key words：high temperature superconductor; cube texture; nickel substrate; grain boundary; rare earths;
Abstract: Pure Ni and Ni alloy tapes with sharp cube texture and low-angle grain boundaries prepared by thennomechanical process were extensively used as substrates for coated conductor. The thermomechanical process usually includes hot forging and cold rolling. In this study, a hot-rolling process between hot forging and cold rolling was induced. The influence of hot rolling on the cube texture of pure Ni was discussed. Sharp cube texture on pure Ni was obtained by suitable hot rolling, cold rolling, and recrystallization treatment. This deformation texture of tape was studied using orientation distribution function (ODF). Orientation mapping, content of the cube texture, and grain boundary distribution were performed using an EBSD system mounted on LEO-1450 SEM. The results show that the substrates that are hot rolled have a sharp cube texture and low-angle grain boundaries.
Liu Huizhou1，Qu Fei1，Shi Kai2，Wang Chaoqun3，Yang Jian1，Gu Hongwei1
(1.Superconducting Materials Research Center, General Research Institute for Non-Ferrous Metals, Beijing 100088,China;
2.Applied Superconductivity Research Center, Tsinghua University, Beijing 100084, China;
3.National Center of Analysis and Testing, General Research Institute for Non-Ferrous Metals, Beijing 100088, China)
Abstract:Pure Ni and Ni alloy tapes with sharp cube texture and low-angle grain boundaries prepared by thennomechanical process were extensively used as substrates for coated conductor. The thermomechanical process usually includes hot forging and cold rolling. In this study, a hot-rolling process between hot forging and cold rolling was induced. The influence of hot rolling on the cube texture of pure Ni was discussed. Sharp cube texture on pure Ni was obtained by suitable hot rolling, cold rolling, and recrystallization treatment. This deformation texture of tape was studied using orientation distribution function (ODF). Orientation mapping, content of the cube texture, and grain boundary distribution were performed using an EBSD system mounted on LEO-1450 SEM. The results show that the substrates that are hot rolled have a sharp cube texture and low-angle grain boundaries.
Key words:high temperature superconductor; cube texture; nickel substrate; grain boundary; rare earths;
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