Ni-based superalloys, like Inconel 625, are commonly used in different industrial sectors, like aerospace and power generation. The performance of Inconel 625 could be improved by the addition of ceramic particles like Cr3C2. The high costs involved using metal matrix composites could be reduced applying them as superficial coatings onto a cheaper material with limited performance. Laser cladding technology was selected in this work among the different possible methods to deposit coatings. Based on previous works regarding to laser cladding deposition of Inconel 625 clads, a process parameter selection to obtain Inconel 625-Cr3C2 clads onto a steel substrate has been reported. A design of experiments was used to select the combination of parameters and their values for the deposition process. The mechanical performance of the coatings’ matrix was analysed and compared with the results previously reported for an unreinforced Inconel 625 coating, deposited in similar way. The microstructure of the coatings was also studied and correlated with the mechanical behaviour.
The International Journal of Advanced Manufacturing Technology – Springer Journals
Published: Apr 15, 2017
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