In this study, we assessed the effects of K₂CO₃ flux on the microstructure and abrasion resistance of high-chromium alloys deposited by open arc self-shielded welding with composite powder particles (CPPs) and solid wire. A high-speed camera was used to capture the arc shape. Phase composition and microstructure of the as-prepared alloys were characterized by an x-ray diffractometer (XRD), a scanning electron microscopy (SEM) with an energy dispersive spectrometer (EDS). Abrasion resistance was investigated using wet sand rubber wheel wear tester. The results showed that the arc expanded outward and changed from a bell jar shape to a hemispherical shape with the addition of K₂CO₃ active fluxes. The CPP filling rate of hardfacing alloys was advanced and their microstructure changed from hypoeutectic to hypereutectic with increasing K₂CO₃ content. Abrasion resistance also improved significantly initially due to the appearance of primary M₇C₃ phases and then decreased for their grain refinement.

在本研究中，我们评估了 K ₂ CO ₃焊剂对使用复合粉末颗粒 (CPP) 和实心焊丝的明弧自保护焊熔敷高铬合金的显微组织和耐磨性的影响。使用高速摄像机捕捉弧形。所制备合金的相组成和微观结构通过 X 射线衍射仪 (XRD)、扫描电子显微镜 (SEM) 和能量色散光谱仪 (EDS) 进行表征。使用湿砂橡胶轮磨损试验机研究耐磨性。_{结果表明，加入K 2} CO ₃后，电弧向外扩展，由钟罩形变为半球形。活性通量。_{随着K 2} CO ₃含量的增加，堆焊合金的CPP填充率提高，显微组织由亚共晶转变为过共晶。_{由于初生 M 7} C ₃相的出现，耐磨性最初也显着提高，然后由于晶粒细化而降低。