经ECAP变形的Al-5Ti-1B中间合金对纯铝细化效果的影响

魏坤霞; 刘平; 魏伟; 杜庆柏; 胡静

doi:10.15980/j.tzzz.2015.08.003

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经ECAP变形的Al-5Ti-1B中间合金对纯铝细化效果的影响
Effect of Al-5Ti-1B Master Alloy Prepared by Equal Channel Angular Pressing on Grain Refining of Pure Al
2015年35卷第8期页码：792-795
纸质出版日期： 2015 ，
DOI： 10.15980/j.tzzz.2015.08.003

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[1]魏坤霞,刘平,魏伟,杜庆柏,胡静.经ECAP变形的Al-5Ti-1B中间合金对纯铝细化效果的影响[J].特种铸造及有色合金,2015,35(08):792-795.

Wei Kunxia, Liu Ping, Wei Wei, et al. Effect of Al-5Ti-1B Master Alloy Prepared by Equal Channel Angular Pressing on Grain Refining of Pure Al[J]. Special Casting & Nonferrous Alloys, 2015,35(8):792-795.
[1]魏坤霞,刘平,魏伟,杜庆柏,胡静.经ECAP变形的Al-5Ti-1B中间合金对纯铝细化效果的影响[J].特种铸造及有色合金,2015,35(08):792-795. DOI： 10.15980/j.tzzz.2015.08.003.

Wei Kunxia, Liu Ping, Wei Wei, et al. Effect of Al-5Ti-1B Master Alloy Prepared by Equal Channel Angular Pressing on Grain Refining of Pure Al[J]. Special Casting & Nonferrous Alloys, 2015,35(8):792-795. DOI： 10.15980/j.tzzz.2015.08.003.

摘要

对Al-5Ti-1B中间合金进行等通道挤压变形（ECAP）

研究了Al-5Ti-1B中间合金经ECAP变形前后对纯铝晶粒的细化效果

分析了Ti添加量及晶粒生长限制因子对纯铝细化效果的影响。结果表明

随着Ti含量的增加

形核质点增多

纯铝晶粒由约1 220μm细化到70μm左右。ECAP变形明显提高了Al-5Ti-1B中间合金的细化效果

建立了晶粒尺寸与晶粒生长限制因子的关系。

Abstract

The Al-5Ti-1Bmaster alloy was prepared by the equal channel angular pressing（ECAP）

and the grain refining performance of Al-5Ti-1Bmaster alloy before and after ECAP for commercial purity Al was evaluated.Effects of the Ti conceng and the growth restriction factor on the grain size of the commercial purity Al were investigated.With the increase of Ti contents

the nuclei particles are increased and the grain size of the commercial purity Al is decreased from approximately 1 220μm to about 70μm.Grain refinement ability of Al-5Ti-1B master alloy by ECAP was improved significantly.The relation between the grain size and the growth restriction factor was built up.