ZL111铝合金表面Ni-Cr-Al激光熔覆层中的非晶组织

Amorphous Structures in Laser clad Ni Cr Al on ZL111 Aluminum Alloy

利用５ｋＷＣＯ２激光器激光熔覆铝合金表面的Ｎｉ－Ｃｒ－Ａｌ涂层，ＳＥＭ与ＴＥＭ分析结果表明，在激光熔覆层中存在有非晶组织，非晶组织呈空间扭曲薄片或杉叶状。

The coating zone (Ni Cr Al) on an aluminum alloy surface was clad by a 5 kW CO 2 laser. The SEM and TEM observation revealed that there were amorphous structures in the laser cladding. The amorphous structures exhibited two different morphologies. One was space curved plate like, which existed in the white web like structures. The other was fir leaf like, which existed in the grain like structures.