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尺寸變化對(duì)Cu-Nb-Cu多芯復(fù)合線材微觀結(jié)構(gòu)及性能影響
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國(guó)家自然科學(xué)基金資助 (51031002)


Effect of Size Change on the Microstructure and Properties of
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    摘要:

    采用集束拉拔技術(shù)制備出高強(qiáng)高導(dǎo)Nb管增強(qiáng)Cu-Nb多芯復(fù)合線材，樣品直徑為Φ2.5 mm時(shí)，強(qiáng)度接近1.1 GPa,導(dǎo)電率達(dá)到74%IACS。選取不同尺寸線徑（Φ3.0 mm、Φ2.7 mm、Φ2.5 mm）的復(fù)合線材，通過場(chǎng)發(fā)射掃描電鏡測(cè)試手段表征了不同尺寸線材的芯絲形貌、Cu-Nb界面的微觀結(jié)構(gòu)，探討了多尺寸條件下芯絲和界面微觀組織的演變規(guī)律及特性，最后結(jié)合σ-ε曲線圖和R-T曲線圖，詳細(xì)分析了尺寸變化所引起線材性能的演變機(jī)理

    Abstract:

    The Cu-Nb multicore composite wires reinforced by high-strength and high-conductivity Nb tube were prepared by a bundling and drawing process. The composite wires with different sizes (Φ3.0 mm, Φ2.7 mm, Φ2.5 mm) were selected, and the core filament morphology as well as the microstructure of Cu-Nb interfaces with different sizes was characterized by SEM; then the evolution and the characteristics of the core filament and the microstructure of Cu-Nb interfaces under multi-size conditions were discussed. Finally, based on σ-ε and R-T curve, the evolution mechanism of property caused by size change was analyzed. Results show that when the diameter of the sample is Φ2.5 mm, the strength of composite wire approaches 1.1 GPa and the conductivity reaches 74%IACS

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王鵬飛,梁 明,徐曉燕,焦高峰,馬小波,盧亞鋒,李成山.尺寸變化對(duì)Cu-Nb-Cu多芯復(fù)合線材微觀結(jié)構(gòu)及性能影響[J].稀有金屬材料與工程,2015,44(4):918~921.[Wang Pengfei, Liang Ming, Xu Xiaoyan, Jiao Gaofeng, Ma Xiaobo, Lu Yafeng, Li Chengshan. Effect of Size Change on the Microstructure and Properties of[J]. Rare Metal Materials and Engineering,2015,44(4):918~921.]
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  • 收稿日期:2014-04-14
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  • 在線發(fā)布日期: 2015-06-08
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