| Cu-5%Cr合金拉拔断丝原因检测分析 |
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| 引用本文： | 陈晖,凌人蛟,李瑞芬.Cu-5%Cr合金拉拔断丝原因检测分析[J].江西有色金属,2007,21(1):30-32. |
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| 作者姓名： | 陈晖 凌人蛟 李瑞芬 |
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| 作者单位： | [1]东北林业大学机电工程学院,黑龙江哈尔滨150040 [2]哈尔滨职业技术学院,黑龙江哈尔滨150001 |
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| 摘 要： | 针对Cu-5%Cr复合材料在拉拔过程中常出现的断丝现象,用扫描电镜对拉拔断丝样品进行宏观和微观断口形貌观察及分析.结果表明,断口形貌为杯锥断口,属典型的微孔聚集型断裂.在拉拔过程中,丝材中存在的大量细小弥散的第二相Cr颗粒与Cu基体变形不协调,是微孔产生和裂纹扩展的主要原因.试验发现去除退火后丝材表面氧化皮、保证良好的润滑效果、采用合适的拉拔变形量可以有效的避免断丝现象的发生.
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| 关 键 词： | 拉拔 Cu-5％Cr 断丝 合金 拉拔 断丝原因 检测分析 Drawing Fracture Alloy 发生 变形不协调 润滑效果 氧化皮 表面 退火 发现 试验 裂纹扩展 基体 颗粒 存在 丝材 |
| 文章编号： | 1005-2712(2007)01-0030-03 |
| 修稿时间： | 2007-03-09 |
Analysis of Cu-5% Cr Alloy Fracture After Drawing |
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| CHEN Hui,LIN Ren-jiao,LI Rui-fen.Analysis of Cu-5% Cr Alloy Fracture After Drawing[J].Jiangxi Nonferrous Metals,2007,21(1):30-32. |
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| Authors: | CHEN Hui LIN Ren-jiao LI Rui-fen |
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| Affiliation: | 1.North-East Forestry University, Harbin 150040, China; 2. Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | Considering the phenomenon of Cu-5%Cr alloy fracture during drawing process, the fracture surface of the samples has been observed through scanning electron microscope. The result showed that the sample fracture is cup-cone fracture and is considered as microspore congregation fracture. In the process of drawing, the deformation of the mass dispersion Cr particles and Cu matrix is uncoordinated, which is the main reason why microspores come into being and crackles extend. It has been proved that the phenomenon of wire fracture can be effectively reduced through getting rid of surface scale, favorable lubrication and the selection of appropriate deformation extent. |
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| Keywords: | drawing Cu-5%Cr fracture |
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