TiB_2粒子的原位生成及对铝合金组织与性能的影响  

In situ Formation of TiB_2 Particles and the Effect of TiB_2 Particles on the Microstructure and Properties of Al Alloy

作　　者：崔庆玲 庞金辉[1] 王明星[1] 宋天福[1] 赵瑞锋[1] 高堤武[1] 高晓鹏[1] 

机构地区：[1]郑州大学物理工程学院教育部材料物理重点实验室

出　　处：《特种铸造及有色合金》2008年第S1期314-316,共3页Special Casting & Nonferrous Alloys

摘　　要：通过对向电解加钛铝熔体加入Al-B中间合金制备含TiB2颗粒的Al合金的研究,分析了这种原位反应法制备工艺的可行性。试验结果表明,熔体中的自由钛、硼原子能自发反应生成稳定的TiB2粒子,且TiB2颗粒细小、弥散的分布在熔体中。随TiB2颗粒含量的增加,TiB2颗粒在合金中的分布更加均匀,铝合金的布氏硬度也随之大幅度提高。Through investigating formation of Al alloy containing TiB2 particles by adding Al-B master alloy to the melt of electrolytic low titanium aluminum,the feasibility of in situ formation of TiB2 was discussed. The experimental results show that the titanium atoms can react with the boron atoms in the melt to form stable TiB2 particles. And the sizes of the TiB2 particles formed in this way are very fine,and also the TiB2 particles uniformly distribute throughout the melt .With the increasing of the amount of ...

关 键 词：电解加钛铝 原位生成 TiB2粒子 布氏硬度 

分 类 号：TB331[一般工业技术—材料科学与工程]