Thermodynamic analysis of aluminum-titanium burning loss for electroslag remelted 06Cr18Ni11Ti austenitic stainless steel
To study the thermodynamic equilibrium of the key elements Al and Ti of the 06Cr18Ni11Ti austenitic stainless steel during the electroslag remelting process,a thermodynamic model based on the ion and molecule coexistence theory(IMCT)was established.For the four-component slag(Al2O3-CaO-MgO-CaF2)with no TiO2,an IMCT formula was developed to calculate the effects of the components of the slag system and the initial Al content in the steel on the equilibrium of Al and Ti.The results indicate that excessive Al2O3 can cause the burning loss of Ti element,excessive CaO will lead to the burning loss of Al element.CaF2 and MgO in slag,which can be used to adjust the viscosity,melting point,and specific resistance of the slag system,have little impact on the equilibrium of Al and Ti.With the increase in temperature in slag,the content of Al at equilibrium time rises,while the content of Ti drops.When more initial Al content is in steel,the content of Al and Ti in equilibrium state is higher.
austenitic stainless steelelectroslag remeltingion and molecule coexistence theoryaluminum-titani-um equilibriumthermodynamic analysis
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