To improve the wear resistance of 6061 aluminum alloy, we have reported the fabrication of in-situ TiB₂-TiC reinforced Fe-Al composite coatings by laser alloying with Fe-based self-fluxing alloy, B₄C and Ti mixed powder. Two Ti contents, which are 30 wt. % and 45 wt. %, in the alloyed coatings were investigated as comparisons, so that investigate phase compositions, microstructures and wear resistance of the alloyed coatings. Additionally, the disregistry between (0001)_TiB2 and (111)_TiC planes were calculated, of which the formation mechanism of TiB₂/TiC composite structure was further analyzed. It was found that the alloyed coatings mainly consisted of TiB₂, TiC, Fe₄Al₁₃, Cr₂B, Cr₇C₃, Al₃Ti and α-Al. With the addition of 30 wt. % Ti, we found that TiC nucleated heterogeneously on the surface of short rod-like TiB₂, forming TiB₂/TiC composites. The interface was well bonded with a low disregistry of 1.049 %. The average micro-hardness of the composite coating was larger than 7 times of the substrate with a high value of 520 HV_0.2. Moreover, a 92.8 % reduction in the volume loss enunciated a significant enhancement in wear resistance. Nevertheless, with the increase of Ti component in the alloyed coating, the supportability of the metal matrix to the reinforcements decreased, resulting in a slight reduction of the micro-hardness and wear resistance.

为了提高6061铝合金的耐磨性，我们已经报道了通过与铁基自熔合金，B ₄ C和Ti混合粉末进行激光合金化来制备原位TiB ₂ -TiC增强的Fe-Al复合涂层的方法。两种钛含量为30 wt。％和45 wt。％，在合金涂层中进行了比较研究，从而研究了合金涂层的相组成，微观结构和耐磨性。此外，计算了（0001）_TiB2和（111）_TiC平面之间的偏离，并进一步分析了TiB ₂ / TiC复合结构的形成机理。发现合金涂层主要由TiB _2组成，TiC，Fe ₄ Al ₁₃，Cr ₂ B，Cr ₇ C ₃，Al ₃ Ti和α-Al。随着30重量％的添加。％Ti，我们发现TiC在短棒状TiB ₂的表面上异质成核，形成TiB ₂ / TiC复合材料。界面粘结良好，具有1.049％的低分散度。复合涂层的平均显微硬度大于底材的7倍，值为520 HV _0.2。此外，体积损失减少了92.8％，表明耐磨性显着提高。然而，随着合金涂层中Ti组分的增加，金属基体对增强材料的支撑能力下降，导致显微硬度和耐磨性略有下降。