熔炼工艺对铝钛硼中间合金组织的影响

Effect of Melting Progress on the Microstructure of Al-Ti-B Master Alloy

研究了采用分步制液法、控制反应温度和反应时间制备铝钛硼中间合金的工艺,并利用金相分析、扫描电镜分析和X射线衍射分析等手段,研究了反应温度和反应时间对铝钛硼中间合金组织中TiAl3和TiB2相的数量、尺寸及分布的影响。结果表明,在800℃的反应温度下,采用分步制液法制备的铝钛硼中间合金具有细化效果,TiAl3相弥散分布在α(Al)基体上,而TiB2相数量少,尺寸小,难以找到具体颗粒。采用此方法制备铝钛硼中间合金需要进一步提高反应的保温温度,为下一步制备工艺的研究有一定的借鉴作用。

The preparation of Al-Ti-B intermediate alloys by step melting preparation,reaction temperature and reaction time were studied,and the effects of reaction temperature and reaction time on the number,size and distribution of TiAl3 and TiB2 phases in al TiB intermediate alloys were studied by means of metallography,SEM and XRD.The results show that the Al-Ti-B intermediate alloy prepared by step melting method at 800℃has fine effect,TiAl3 phase is dispersed in(Al)matrix,while TiB2 phase is small in number and size,so it is difficult to find specific particles.The preparation of Al-Ti-B intermediate alloy by this method needs to further improve the temperature of the reaction,which can be used as a reference for further research on the preparation process.