Sliding wear behavior of cold metal transfer cladded Stellite 12 hardfacings on martensitic stainless steel

Abstract Cold metal transfer (CMT) welding technique was used in the manufacturing of hypoeutectic carbide-type Co-based Stellite 12 hardfacings on martensitic stainless steel. It discovered that CMT process is capable producing relatively thick (> 2.5 mm) low diluted single-layer coatings with cored wire without cracks and pores. These were investigated using microscopy (optical scanning electron microscopy), X-ray diffraction, hardness measurements. The high melting point chromium tungsten particles inside large therefore remained unmelted clad layers. Self-mated sliding wear tests performed a pin-on-disc tribometer at room temperature 300 °C to determine resistance friction coatings. coefficients similar (~ 0.35) both temperatures. Differences exhibited ~ 40% greater loss material temperature. performance did not, however, reach self-mated laser 6 reference material. hardfacing finally successfully demonstrated ring-shaped component.