Abstract
In this study, the variation of microstructure, yield and ultimate strength, strain hardening index, and abrasive wear resistance of the hadfield steel cladded on st40 steel by the flux-cored gas tungsten arc welding process protected by argon gas was investigated. The chemical composition of cladded hadfield Steel contains Carbon, Manganese, and Silicon. Amount of Carbon, Manganese, and Silicon is constant in all experiments, and Amount of Molybdenum ranged from o to 2.2 percent. Hence microstructure of samples with the optical microscope and fractography with SEM as well as the formed phases with X-ray diffraction and energy dispersive x-ray (EDX) were analyzed. To survey mechanical properties, tensile and impact tests were carried out. Abrasive wear resistance was measured by dry sand/rubber wheel apparatus. The results showed that the higher the percentage of Molybdenum is, the higher the yield and ultimate strength will be, while the strain hardening index does not decrease. By increasing the percentage of molybdenum, the impact energy of the specimens and abrasive wear resistance has also increased.
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