Characterization Of Fep-Based Metallic Glass Coatings Prepared With Laser Cladding

Fe-based metallic glasses are distinguished by high mechanical strength, good corrosion resistance and reasonable price, but due to limited ductility cracks often appear during thermal processing like laser cladding. This problem is especially visible when several beads are deposited. Therefore, an alloy with increased ductility was selected for tests to check if it can facilitate cladding of defect-free coatings. The alloy was gas atomized and then sieved to desired fraction. The coatings were then deposited with laser cladding. The obtained coatings were fully crystallized with microstructure varied from dendritic to globular one and strong segregation of the phosphorous and molybdenum.