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强脉冲电磁场对金属凝固组织影响的研究

訾炳涛 巴启先 崔建忠 白玉光 那兴杰

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强脉冲电磁场对金属凝固组织影响的研究

訾炳涛, 巴启先, 崔建忠, 白玉光, 那兴杰

EFFECT OF STRONG PULSED ELECTROMAGNETIC FIELD ON METAL'S SOLIDIFIED STRUCTURE

ZI BING-TAO, BA QI-XIAN, CUI JIAN-ZHONG, BAI YU-GUANG, NA XING-JIE
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  • 提出了用强脉冲磁场和电流细化金属凝固组织的新工艺.与未经磁场或电流处理的凝固样品相比,强脉冲电磁场能够显著地改善LY12铝合金的凝固组织,使晶粒明显细化、球化;电磁场的强度愈强,这种改善效果愈明显.对该新工艺的细化机理进行了理论分析,同时,指出了实验中的新现象和新问题.
    It was studied by us that new technologies using strong pulsed magnetic field and electric current were applied to refine metal's solidified structure.These technologies improved remarkably the solidified structure of LY12 aluminum alloy and made the solidified grains more equiaxed and apparently finer compared with that of the normal sample,which is of more dendrite grains.The stronger the strength of the pulsed electromagnetic field,the better the improvement effect was.The refinement mechanisms of the new technologies were analyzed theoretically.New phenomena and problems occurred in our experiments were also pointed out in this paper.
    • 基金项目: 国家重大基础研究发展规划项目基金(批准号:G1999064900-05)资助的课题.
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  • 文章访问数:  6561
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出版历程
  • 收稿日期:  1999-09-19
  • 修回日期:  1999-11-16
  • 刊出日期:  2000-05-20

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