东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2006, Vol. 27 ›› Issue (8): 871-874.DOI: -

• 论著 • 上一篇    下一篇

ZL201合金低频电磁铸造与二次加热的合金组织

路贵民;赵大志;王平;崔建忠;   

  1. 东北大学材料电磁过程研究教育部重点实验室;东北大学材料电磁过程研究教育部重点实验室;东北大学材料电磁过程研究教育部重点实验室;东北大学材料电磁过程研究教育部重点实验室 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2006-08-15 发布日期:2013-06-23
  • 通讯作者: Lu, G.-M.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50374031)

Low-frequency electromagnetic casting of ZL201 alloy and its microstructure after reheating

Lu, Gui-Min (1); Zhao, Da-Zhi (1); Wang, Ping (1); Cui, Jian-Zhong (1)   

  1. (1) Key Laboratory for Electromagnetic Processing of Materials, Northeastern University, Shenyang 110004, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2006-08-15 Published:2013-06-23
  • Contact: Lu, G.-M.
  • About author:-
  • Supported by:
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摘要： 采用低频电磁铸造技术制备ZL201合金半固态坯料,研究了电磁场频率以及二次加热温度和保温时间对合金微观组织的影响.结果表明,随着电磁场频率从10 Hz增大到30 Hz,组织的枝晶化趋势逐渐减弱,当电磁场频率为30 Hz时,可以获得均匀、细小的蔷薇状和等轴晶组织.对电磁场频率为30 Hz时铸造的半固态坯料进行二次加热表明,当二次加热温度为630℃,保温20 min后,铸造组织逐渐转变为均匀的近球形组织,具有良好的触变成形性.

关键词: 低频电磁铸造, 半固态, ZL201合金, 二次加热, 触变成形

Abstract: Preparing the semi-solid billets of ZL201 alloy by low-frequency electromagnetic casting (LFEC), the effects of electromagnetic frequency, reheating temperature and holding time on their microstructures were studied. The results showed that the trend of dentritic microstructure is gradually down with increasing electromagnetic frequency from 10 Hz to 30 Hz, and a homogeneous and fine rosette/equiaxial grain microstructure can be obtained at 30 Hz. When reheating the semi-solid billets cast at 30 Hz and 630°C for 20 min, the as-cast microstructure turns gradually into homogeneous and near-spherical grains which are suitable for thixoforming.

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