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材料研究学报  2008, Vol. 22 Issue (4): 369-373    
  论文 本期目录 | 过刊浏览 |
用行波电磁搅拌制备半固态AlSi7Mg合金浆料
赵振铎;毛卫民;钟荣茂
北京科技大学材料科学与工程学院材料加工系
Preparation of semi-solid AlSi7Mg alloy slurry through traveling electromagnetic stirring
;
北京科技大学材料科学与工程学院材料加工系
引用本文:

赵振铎; 毛卫民; 钟荣茂 . 用行波电磁搅拌制备半固态AlSi7Mg合金浆料[J]. 材料研究学报, 2008, 22(4): 369-373.
, , . Preparation of semi-solid AlSi7Mg alloy slurry through traveling electromagnetic stirring[J]. Chin J Mater Res, 2008, 22(4): 369-373.

全文: PDF(798 KB)  
摘要: 用低过热度浇注和弱行波电磁搅拌工艺制备半固态AlSi7Mg合金浆料, 研究了浇注温度和搅拌功率对其初生α-Al形貌的影响. 结果表明, 用该工艺可制备初生$\alpha$--Al形貌呈小而圆整的球状晶粒、组织分布均匀、 较大尺寸(直径为127 mm)的半固态AlSi7Mg合金浆料. 浇注温度合适, 短时间弱电磁搅拌(8 s左右)就可获得初生α-Al形貌大部分为球状, 组织分布比较均匀的浆料组织. 浇注温度一定, 适当提高搅拌功率可明显改善初生 α-Al的形貌, 但是过高的搅拌功率并不能使初生α-Al的形貌进一步改善. 用该工艺制备的半固态AlSi7Mg合金浆料, 从其边部到心部的径向组织初生 α-Al形貌经历了一个从枝晶组织向蔷薇状组织再向球状组织转变的过程.
关键词 金属材料半固态低过热度浇注电磁搅拌    
Key words
收稿日期: 2007-09-13     
ZTFLH:  TG146  
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