(北京工業(yè)大學(xué) 材料科學(xué)與工程學(xué)院， 北京 100124)
摘 要: 采用放電等離子燒結(jié)技術(shù)(SPS)制備出表層為Ni-5%W(摩爾分?jǐn)?shù))合金、芯層為Ni-12%W(摩爾分?jǐn)?shù))合金的復(fù)合坯錠，經(jīng)熱軋和冷軋后獲得長(zhǎng)度為10 m的復(fù)合基帶。結(jié)果表明：冷軋基帶界面連接性良好，能夠滿足大變形量冷軋工藝的要求。對(duì)復(fù)合基帶的厚度及織構(gòu)均勻性分析表明，在全長(zhǎng)度范圍內(nèi)基帶的厚度為(75±3) µm，其外層立方織構(gòu)含量均在97%(＜10°)以上，與商業(yè)化Ni5W基帶水平相當(dāng)。同時(shí)，對(duì)其力學(xué)性能與磁性能進(jìn)行分析，結(jié)果表明復(fù)合長(zhǎng)帶的屈服強(qiáng)度為240 MPa，飽和磁化強(qiáng)度僅為Ni5W基帶的40%。采用復(fù)合坯錠路線在規(guī)模化生產(chǎn)高性能復(fù)合基帶方面具有一定的應(yīng)用潛力。
關(guān)鍵字: 復(fù)合基帶；立方織構(gòu)；涂層導(dǎo)體；Ni合金基帶
sparking plasma sintering method
（College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China）
Abstract:A tri-layer composite ingot with Ni-5%W (mole fraction) alloy as the outer layer coupled with Ni-12%W (mole fraction) alloy as the inner layer was fabricated by sparking plasma sintering method. A 10 m length composite tape was prepared by traditional hot rolling and cold rolling process. The results show that the connectivity between the outer layer and inner layer of the composite tape is good enough during the heavy cold rolling process. The evaluation of the uniformity for both the thickness and texture in the whole tape shows that the thickness of the obtained composite tape is (75±3) µm and the cube texture is about 97%(＜10°), which is the same as the level of the commercial Ni5W tape. The analyses of mechanical and magnetic properties indicate that the yield stress of the composite substrate is 240 MPa and the saturation magnetization is only 40% of that of the commercial Ni5W tape. Consequently, the preparation route of composite ingot solution has a potential application to manufacture the long-scale composite substrate used for coated conductors.
Key words: composite substrate; cube texture; coated conductor; Ni-based substrate tape
