Abstract In order to know the influence of laser power on steel (27SiMn) used for repairing column with Inconel 718 powder materials, and obtain optimal parameters best mechanical properties cladding layer, microstructure, tensile fracture morphology alloy under three powers (1800 W, 2100 W 2400 W) were investigated by using single-factor variable method, keeping scanning speed, feeding amount ...

Anti-corrosion properties of Inconel 625 (In) laser cladding coatings onto the (S235JR) steel (S) were investigated. The produced with use wire (WIn/S) or powder (PIn/S). mechanical characterized by microhardness measurements. PIn/S shows highest hardness. surface and microstructure specimens observed a scanning electron microscope (SEM). analysis energy-dispersive spectroscope (EDS) indicated ...

Al-TiC-CeO₂ composite coatings have been prepared by using a laser cladding technique, and the microstructure and properties of the resulting composite coatings have been investigated using scanning electron microscopy (SEM), a 3D microscope system, X-ray diffraction (XRD), micro-hardness testing, X-ray stress measurements, friction and wear testing, and an electrochemical workstation. The resu...

Micron-size Ni-base alloy (NBA) powders were mixed with both 1.5 wt.% (hereinafter %) micron-size CeO2 (m-CeO2) and also 1.5% and 3.0% nano-size CeO2 (n- CeO2) powders. These mixtures were coated on low-carbon steel (Q235) by 2.0 kW CO2 laser cladding. The effects on the microstructures, phases and electrochemical corrosion of the coatings upon the addition of m- and n- CeO2 powders to NBA (m- ...

Abstract Fe based amorphous alloys have no defects such as grain boundaries and dislocations, with high hardness wear resistance. However, due to the limitation of brittleness size effect, they been unable realize engineering application. Using ultra-high speed laser cladding technology prepare powder into coating can not only give play its excellent properties, but also avoid limitations cause...

Abstract FGH95 nickel-base superalloy powders were coated on GH4169 by coaxial single-track laser cladding. The effects of process parameters cladding width and height studied based the three-factor three-level orthogonal experiment. experimental results are nonlinearly fitted MATLAB software, mathematical model between geometrical features is set up. show that effect factor clad in order first...

During the long-term operation, mallets of the forging hammers are exposed to thermal fatigue due to the cyclic temperature changes and impact loads. Taking into account very high price, and a risk of buying frequently the new parts, the necessity of their reparation becomes obvious. The forging hammer mallet (Figure 1), is primarily exposed to the impact compressive loads, and partially also t...