Characterization of Fe-Nb-B Base Hardfacing of Steel |
| B. Kilinca, O. Cegilb, E. Abakaya, U. Senc and S. Senc
aDepartment of Metallurgical and Materials Engineering, Institute of Arts and Sciences, Sakarya University, Esentepe Campus, 54187 Sakarya, Turkey bKorfez Technical and Industrial Vocational High School, Department of Metal Technology, 41780, Korfez, Kocaeli, Turkey cDepartment of Metallurgical and Materials Engineering, Engineering Faculty, Sakarya University, Esentepe Campus, 54187 Sakarya, Turkey |
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| Recently hardfacing by welding has become a commonly used technique for improvement of material performance in extreme (high temperature, impact/abrasion, erosion, etc.) conditions. In the present study, three different alloy compositions of the Fe-Nb-B were used for hardfacing of the AISI 1020 steel by tungsten inert gas welding process and analyzed. The coatings were produced from a mixture of ferrous niobium, ferrous boron and iron powders in the range of - 45 μm particle size with different ratio. The coatings' thickness was set to 2-3 mm on the substrate. Microstructure, phase analysis and hardness of the manufactured hardfacing alloys were characterized. Deposition results indicate good quality thick coating and porosity free of the hardfacings. X-ray diffraction analyses showed that the alloyed layers include iron borides, FeNbB and iron phases. It was shown that surface alloyed layer has composite structure including steel matrix and well distributed boride phases. |
DOI: 10.12693/APhysPolA.125.656 PACS numbers: 81.65.Kn, 68.55.J-, 81.65.Lp |