| Effect of pulse magnetic field on solidification structure and properties of pure copper |
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| 作者姓名： | LIAO Xi-liang GONG Yong-yong LI Ren-xing CHEN Wen-jie ZHAI Ql-jie |
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| 作者单位： | School of Materials Science and Engineering，Shanghai University，Shanghai 200072，China; School of Mechanical Engineering，Shandong University，Jinan 250061，China |
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| 基金项目： | 国家重点基础研究发展计划(973计划);上海市科委资助项目 |
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| 摘 要： | The application of pulse magnetic field to metal solidification is an advanced technique which can remarkably refine solidification structure. In this paper, the effect of pulse magnetic field on solidification structure, mechanical properties and conductivity of pure copper was experimentally investigated. The results showed that the solidification structure transformed from coarse columnar crystal to fine globular crystal with increasing pulse voltage. Increasing pulse voltage also improved the tensile strength. However, with the increase of pulse voltage, the elongation and electrical resistivity firstly decreased, then increased when the pulse voltage beyond a critical value. Moreover, in some conditions, pulse magnetic field can simultaneously improve the conductivity and mechanical property of pure copper.
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| 关 键 词： | 脉冲磁场 纯铜 凝固结构 性质 |
Effect of pulse magnetic field on solidification structure and properties of pure copper |
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| LIAO Xi-liang,GONG Yong-yong,LI Ren-xing,CHEN Wen-jie,ZHAI Ql-jie.Effect of pulse magnetic field on solidification structure and properties of pure copper[J].China Foundry,2007,4(2):116-119. |
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| Authors: | LIAO Xi-liang GONG Yong-yong LI Ren-xing CHEN Wen-jie ZHAI Qi-jie |
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| Affiliation: | 1. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China;School of Mechanical Engineering,Shandong University, Jinan 250061, China
2. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China |
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| Abstract: | The application of pulse magnetic field to metal solidification is an advanced technique which can remarkably refine solidification structure. In this paper, the effect of pulse magnetic field on solidification structure, mechanical properties and conductivity of pure copper was experimentally investigated. The results showed that the solidification structure transformed from coarse columnar crystal to fine globular crystal with increasing pulse voltage. Increasing pulse voltage also improved the tensile strength. However, with the increase of pulse voltage, the elongation and electrical resistivity firstly decreased, then increased when the pulse voltage beyond a critical value. Moreover, in some conditions, pulse magnetic field can simultaneously improve the conductivity and mechanical property of pure copper. |
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| Keywords: | pure copper pulse magnetic field solidification structure property |
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