东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2010, Vol. 31 ›› Issue (1): 72-75.DOI: -

• 论著 • 上一篇    下一篇

强磁场对Cu-20%Fe合金沉积处理的影响

左小伟;王恩刚;张林;赫冀成;   

  1. 东北大学材料电磁过程研究教育部重点实验室;
  • 收稿日期:2013-06-20 修回日期:2013-06-20 出版日期:2010-01-15 发布日期:2013-06-20
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2007AA03Z519);;

Effect of high-intensity magnetic field on precipitation treatment of Cu-20%Fe alloy

Zuo, Xiao-Wei (1); Wang, En-Gang (1); Zhang, Lin (1); He, Ji-Cheng (1)   

  1. (1) Key Laboratory of Electromagnetic Processing of Materials, Northeastern University, Shenyang 110004, China
  • Received:2013-06-20 Revised:2013-06-20 Online:2010-01-15 Published:2013-06-20
  • Contact: Wang, E.-G.
  • About author:-
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摘要： 研究了强磁场对Cu-20%Fe(质量分数)合金沉积处理时微观组织和基体固溶度的影响.结果表明:随沉积处理时施加强磁场磁感应强度的增加,Cu-Fe合金的Fe枝晶球化略有增加,且分布更均匀;对Cu基体的高倍SEM分析发现,随磁感应强度增加,基体中析出的Fe原子增加,表明强磁场可以促进过饱和Cu基体中Fe原子的析出;对不同强磁场下Cu-20%Fe合金沉积处理后的样品中基体固溶度的EDS分析表明,在10T强磁场下500℃沉积处理时基体的固溶度最低,这是由于强磁场降低扩散原子激活能,促进Fe原子的析出,与沉积温度引起的Fe原子扩散溶解共同作用的结果.

关键词: 强磁场, Cu-Fe合金, 沉积处理, 微观组织, 扩散

Abstract: Effect of high-intensity magnetic field on the microstructure evolution and solubility of Fe in Cu matrix of Cu-20wt%Fe alloy after precipitation treatment was investigated. The results showed that the spheroidization of Fe-rich dendrites slightly intensifies and their distribution is more uniform with the increasing magnetic induction of the high-intensity magnetic field exerted to the alloy. Observation by high-power SEM indicated that the Fe atoms precipitated from Cu matrix increases with increasing magnetic induction, which reveals that the magnetic field can stimulate the precipitation of Fe from the oversaturated Cu matrix. The solubility of Cu matrix in the Cu-20wt%Fe alloy specimens after precipitation treatment in different high-intensity magnetic field was analyzed by EDS methods, and the results showed that the solubility of Fe is minimum when the intensity of magnetic field is 10T at 500°C during precipitation. This is because of the effect combining high-intensity magnetic field with precipitating temperature. The former reduces the activation energy due to Fe atomic diffusion to stimulate the precipitation of Fe atoms, and the latter induces the dissolution of Fe atoms due to atomic diffusion.

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