Calculation of liquidus temperature of low and high alloyed iron base melts from their chemical composition by means of the equivalence factors

TL;DRAbstract

Liquidus temperature of a steel is calculated from its chemical composition according to the so far proposed procedures by simply summing up the iron melting point lowering effects of all in the steel contained elements X i , as they are given by approximating the iron liquidus curves with the straight lines in the corresponding binary Fe‐ X i systems. The intensification of the iron melting point lowering effect with the increasing concentration of each element contained in the steel has not been at all or only partly taken into account in this approach. This is the reason why the calculated steel liquidus temperatures are not accurate enough. In the here proposed new calculation procedure the iron melting point lowering effect of an alloying element X i is first translated into an equivalent effect of carbon in the Fe‐C system by converting the concentration of X i into an equivalent concentration of carbon taken as a reference element. The carbon equivalent iron melting point loweri

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