THE INFLUENCE VANADIUM ON THE FE-SI-MN-C-O DURING THE EXISTENCE OF A LIQUID BATH METAL
Keywords:
thermodynamic potential, vanadium, simulation, reliability, durabilityAbstract
The actual problem is the provision of data of physical and mechanical properties of the surface layer parts, namely managing structured formation, formation of metastable, which is engineering the surface. For the determination of multicomponent alloys requires calculation model that could provide sufficiently accurate prediction priority flow necessary reactions. This model is described by the authors of the work and can be used to study the influence of alloying elements on the system Fe-Si-Mn-CO.
Significantly increases the strength, hardness and wear resistance of steel as the addition of alloying element vanadium (V), by deoxidation action ligatures and by the formation of carbides. In addition, forming refractory carbides and nitrides, vanadium promotes primary and secondary grinding grains makes fine steel. Dissolved in ferrite, vanadium increases the liquid limit and plasticity improves.
The task was set of development activities to overcome the negative effects of doping by vanadium weld pool. The main parameter that determines the balance of the system and the ability of a chemical reaction to its development, accepted the conditions of the process is a thermodynamic quantity changes (isobaric-isothermal) potential ΔGT0 (Gibbs potential). Analysis Gibbs potential change in the temperature range under study allows to distinguish the most likely response of the system. Priority reactions identified at the analysis stage schedules isobaric-isothermal change of capacity, the authors propose a model to examine the course of chemical reactions in the melt, which is represented by the scheme. This model allows us to determine the probability of the sequence and flow of chemical reactions and the resulting compounds exist in the system Fe-Si-Mn-V-C-O after crystallization.
Analysis of the microstructure of the system Fe-Si-Mn-V-C-O will investigate the effect of vanadium on physical and mechanical properties of the coating formed. For experimental research was designed and manufactured electrodes on which the conclusions of theoretical been confirmed.
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