添加Cr元素对快速凝固Al-Ti-Fe基合金显微组织和显微硬度的影响

Influence of Cr Element Addition on Microstructure and Microhardness of Rapidly Solidified Al-Ti-Fe Alloy

摘要:

采用单辊旋铸技术制备Al-2．5Ti-2．5Fe和A1-2．5Ti-2．5Fe-2．5Cr合金薄带，利用X射线衍射、EDS、透射电镜和高分辨电镜来分析该两种合金的急冷态和退火态显微组织，研究了Cr对快速凝固Al-2．5Ti-2．5Fe合金显微组织和显微硬度的影响。

关键词:快速凝固 Al-Ti-Fe合金 Al-Ti-Fe-Cr合金 急冷态 退火态 显微组织 显微硬度

Abstract:

Rapidly solidified Al-2.5Ti-2.5Fe and Al-2.5Ti-2.5Fe-2.5Cr alloys were prepared by a melt spinning method. As-quenched and as-annealed microstructures were studied by transmission electron microscopy (TEM), X-ray diffractometry(XRD), EDS and HREM. The influence of the Cr element doping on the as-quenched and as-annealed microstructure and microhardness of rapidly solidified Al-Ti-Fe alloy was also studied.

Key words:rapidly solidified Al-Ti-Fe and Al-Ti-Fe-Cr alloy,as-quenched microstructure,as-annealed microstructure,microhardness