Influences of Preparation Conditions and Melt Treatment Procedureson Melt Treatment Performance of Al-5Ti-Band Al-10Sr Master Alloys

J. Mater. Sci. Technol. ›› 2006, Vol. 22 ›› Issue (01): 50-54.

Influences of Preparation Conditions and Melt Treatment Procedureson Melt Treatment Performance of Al-5Ti-Band Al-10Sr Master Alloys

冯鹏发

清华大学机械工程系

收稿日期:2004-11-22 修回日期:2005-05-17 出版日期:2006-01-28 发布日期:2009-10-10
通讯作者:

Influences of Preparation Conditions and Melt Treatment Procedureson Melt Treatment Performance of Al-5Ti-Band Al-10Sr Master Alloys

Pengfa FENG, Jinglin TANG, Xinyan JIN, Shuangshou LI, Daben ZENG

Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China

Received:2004-11-22 Revised:2005-05-17 Online:2006-01-28 Published:2009-10-10
Contact: Jinglin TANG

摘要/Abstract

摘要： 对Al-5Ti-B（铸锭与热轧态）和Al-10Sr（铸锭与热挤压态）的加工状态以及熔体处理工艺对A356合金的熔体处理效果的影响，进行了实验研究。结果表明：对这两种中间合金而言，50%的变形量足以满足对A356合金有效进行晶粒细化和变质所需的组织条件；当Al-5Ti-B中间合金在除气精炼之前加入熔体时，精炼气泡可使TiB2粒子充分弥散，固而细化效果大大提高；当Al-5Ti-B与Al-10Sr中间合金共同加入熔体时，前者对后者的变质效果不产生任何影响。

关键词: 变质, 中间合金, 热变形, 晶粒细化, A356合金

Abstract: The influences of preparation conditions of Al-5Ti-B (as-cast and hot-rolled) and Al-10Sr (as-cast and hot-extruded) and melt treatment procedures on the grain refinement and modification performance of A356 alloy are experimentally studied. For the two master alloys, the 50% reduction is sufficient to meet the demands of the efficient grain refinement and modification of A356 alloy. When Al-5Ti-B is introduced into the melt prior to degassing, the grain refinement efficiency of Al-5Ti-B will be greatly increased due to the better dispersity of TiB2 particles. Al-5Ti-B master alloy is less prone to affect the modification effect of Al-10Sr when they are used together.

Key words: Grain refinement, Modification, Hot deformation, Master alloys, A356 alloy

冯鹏发. Influences of Preparation Conditions and Melt Treatment Procedureson Melt Treatment Performance of Al-5Ti-Band Al-10Sr Master Alloys[J]. J. Mater. Sci. Technol., 2006, 22(01): 50-54.

Pengfa FENG, Jinglin TANG, Xinyan JIN, Shuangshou LI, Daben ZENG. Influences of Preparation Conditions and Melt Treatment Procedureson Melt Treatment Performance of Al-5Ti-Band Al-10Sr Master Alloys[J]. J Mater Sci Technol, 2006, 22(01): 50-54.

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Influences of Preparation Conditions and Melt Treatment Procedureson Melt Treatment Performance of Al-5Ti-Band Al-10Sr Master Alloys

Influences of Preparation Conditions and Melt Treatment Procedureson Melt Treatment Performance of Al-5Ti-Band Al-10Sr Master Alloys

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