Microstructural properties of SiC based hardfacing on low alloy steel

Effect of Boron on Microstructure and Microhardness Properties of Mo-Si-B Based Coatings Produced Via TIG Process

“…It is partly seen that this precipitation occurred also inside of grains. Considering the coatings made with TIG, it has shown that coating layer in the studies in the literature has a dendritic microstructure [12][13][14]. unlike other studies, dendritic formation was not observed in this study.…”

Effects of silicon content on the microstructure and corrosion behavior of Fe–Cr–C hardfacing alloys

“…Coatings with filler metals or powders are mostly made by welding, thermal spraying, or allied welding processes [25]. In recent years, a number of studies conducted on the gas tungsten arc welding (GTAW) process to modify the properties of steel surface [26][27][28][29][30]. In this study, the surface of the carbon steel was intrinsically alloyed with preplaced 55Fe39Cr6C, 49Fe39Cr6C6Si, and 45Fe39Cr6C10Si powders using a tungsten arc heat source under a shield of pure argon gas.…”

Surface alloying of AISI 1045 steel in a nitrogen environment using a gas tungsten arc process

“…Although S 1 and S 2 exhibit more of the TiN phase in their microstructures compared with the other samples, their hardness is lower. This may be explained by a high amount of heat input produced under high nitrogen content in the shielding gas during surface melting; this leads to the melting of a larger amount of substrate diluting the melt pool, leading to a decrease in the hardness of the treated layers (Buytoz, 2006). Nevertheless, the higher percentage of TiN in S 1 is the primary cause of its higher hardness when compared with that of S 2 .…”