为了研究原位自生 ＴｉＣ颗粒对堆焊层组织与性能的影响，采用药芯焊丝明弧堆焊方法在Ｑ２３５钢表面制备了 ＦｅＣｒＴｉＣ堆焊合金．利用 Ｘ射线衍射仪、扫描电子显微镜、洛氏硬度计和湿砂磨损试验机对堆焊合金进行了分析．结果表明，加入的 Ｔｉ元素可在堆焊层中原位生成 ＴｉＣ硬质相颗粒，并促进 Ｍ７Ｃ３硬质相的生成，从而起到细化晶粒的作用．当生成的 ＴｉＣ和 Ｍ７Ｃ３硬质相数量较多且弥散分布于金属基体中时，这些硬质相可起到相应的抗磨骨架作用，从而提高了堆焊金属的耐磨性．当药芯焊丝中 Ｔｉ元素的质量分数为 ７％时，堆焊层性能最佳，其硬度值为 ６１６ＨＲＣ，磨损量为 ０３９０４ｇ． In order to study the effect of in-situ TiC particles on the microstructure and properties of overlay, the flux-cored welding wire arc surfacing method was used to prepare FeCrTiC surfacing alloy on the surface of Q235 steel. The deposited alloy was analyzed by X-ray diffraction, scanning electron microscope, Rockwell hardness tester and wet sand abrasion tester. The results show that the addition of Ti can form TiC hard phase particles in situ in the overlay and promote the formation of M7C3 hard phase, which can refine grains. When the generated TiC and M7C3 have a large number of hard phases and diffusely distributed in the metal matrix, these hard phases can play a corresponding anti-wear skeleton effect, thereby improving the wear resistance of the deposited metal. When the mass fraction of Ti element in the flux cored wire is 7%, the surfacing layer has the best performance with hardness of 616HRC and wear amount of 03904g.