东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2005, Vol. 26 ›› Issue (5): 448-451.DOI: -

• 论著 • 上一篇    下一篇

倾斜式冷却剪切制备半固态Al-Mg合金

管仁国;李俊鹏;石路;温景林   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2005-05-15 发布日期:2013-06-24
  • 通讯作者: Guan, R.-G.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50274020);;辽宁省自然科学基金资助项目(20041006)

Preparation of Al-Mg-based semisolid alloy by inclined cooling/shearing

Guan, Ren-Guo (1); Li, Jun-Peng (1); Shi, Lu (1); Wen, Jing-Lin (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2005-05-15 Published:2013-06-24
  • Contact: Guan, R.-G.
  • About author:-
  • Supported by:
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摘要： 利用自制的实验装置对倾斜式冷却剪切技术制备半固态Al Mg合金进行了研究·液体合金在倾斜的冷却板表面非均匀形核并受到重力的剪切作用,合金逐渐从粗大等轴晶网络演化为细小的球形晶·控制浇注温度在660～690℃范围内可以获得良好组织的半固态坯料,很好地改善了常规铸造高Mg合金中出现的羽毛晶·冷却板表面性质对合金组织具有重要影响,表面干净并具有一定粗糙度的冷却板制备出的合金组织优良·

关键词: 倾斜式, 冷却剪切, 半固态, AlMg合金, 组织

Abstract: An experimental inclined cooling/shearing set-up was developed to prepare the Al-Mg-based semisolid alloy, the molten alloy nucleated heterogeneously on the inclined-cooling plate surface and was sheared under the action of gravity force, and its microstructure gradually evolved into fine spherical grain from coarse equiaxed grain network. By controlling casting temperature in the range of 660-690°C, the semisolid slabs with good microstructure were obtained, with the feather crystal which are usually found the high-Mg alloy slabs conventionally improved greatly. The surface conditions of cooling plate obviously affects the alloy microstructure, i.e., fine microstructure can be obtained if the cooling plate has a clean surface that is rough to a certain degree. The inclination angle of cooling plate is preferable in the range of 40°-50°.

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