Improvement of Microstructure of Al-Ti-B Master Alloy

Zhou Yuhui; Huang Qingmin

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Improvement of Microstructure of Al-Ti-B Master Alloy
Issue 4, Pages: 311-313(2008)
Published： 2008 ，
DOI：

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[1]周玉辉,黄清民.改善Al-Ti-B中间合金微观组织的研究[J].特种铸造及有色合金,2008(04):311-313+245.

Zhou Yuhui, Huang Qingmin. Improvement of Microstructure of Al-Ti-B Master Alloy. [J]. Special Casting & Nonferrous Alloys (4):311-313(2008)
[1]周玉辉,黄清民.改善Al-Ti-B中间合金微观组织的研究[J].特种铸造及有色合金,2008(04):311-313+245. DOI：

Zhou Yuhui, Huang Qingmin. Improvement of Microstructure of Al-Ti-B Master Alloy. [J]. Special Casting & Nonferrous Alloys (4):311-313(2008) DOI：

摘要

采用氟盐法工艺制备Al-5Ti-B中间合金

并使用成分改良的铝合金熔剂（主要含有NaCl、KCl、CaF、Na3AlF6）

改善了微观组织;TiB2相呈细粒状

均匀弥散分布在α-Al基体上

平均尺寸为0.35～2μm;TiAl3呈块状均匀分布

平均尺寸为25～95μm。金相观察中没有发现化合物/组成相的区域偏聚现象。

Abstract

The microstructure of Al-Ti-B master alloy was improved by a new method with modified flux.The results indicate that the fine TiB2 particle with 0.35-2μm in average size is uniformly dispersively distributed in the α-Al matrix.Bulk TiAl3 phase with 25-95 μm in average size is uniformly distributed in the α-Al matrix also.The absence of segregation of compound/phase can be observed in the master alloy.