进口Al-Ti-B和Al-B中间合金成分和组织特点
Composition and Microstructure of Import Al-Ti-B and Al-B Alloy
李志扬, 倪红军, 汪兴兴, 朱 昱
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作者单位：(南通大学 机械工程学院, 江苏 南通 226019)
中文关键字：进口Al-Ti-B； 进口Al-B； 成分； 组织； 细化
英文关键字：import Al-Ti-B; import Al-B; composition; microstructure; refinement
中文摘要：采用辉光放电质谱仪、图像分析仪及分析软件对进口Al-Ti-B和Al-B中间合金的成分和组织进行了研究。结果表明，进口Al-Ti-B合金中Ti含量约为3.89wt%，B含量约为0.90wt%，两者的比例接近4.3 ∶ 1；进口Al-B合金中B含量约为2.99wt%；进口Al-Ti-B线材中TiAl3呈较小的杆状和团块状分布，颗粒尺寸为10～30 μm，TiAl3的数量也较多；TiB2颗粒的分布较均匀，尺寸细小，且颗粒之间结合疏松；进口Al-B合金中含有大量粒径为2～20 μm 的AlB2中间相，分散性好。
英文摘要：The composition and microstructure of import Al-Ti-B and Al-B alloy were investigated by glow discharge mass, spectrumeter analysis and image analysis. The results show that import Al-Ti-B contains 3.89wt% Ti and 0.90wt%B (mass ratio, Ti to B is close to 4.3 ∶ 1); import Al-B contains 2.99wt%B. Large amout of TiAl3 particulates in import Al-Ti-B wire are in smaller rod shape and agglomerate shape, in the size of 10～30 μm; TiB2 particulates with small size distribute uniformly, and the combination between the particulates is loose. Import Al-B alloy contains a large number of well distributed AlB2 intermediate phases in the size of 2～20 μm.