Resistivity of aluminium alloyed cast steel

The paper presents the results of investigations of two cast steel grades (further referred to as Alloy 1 and Alloy 2). Alloy 1 contains, among others, 0.25% C, 11.5% Al, 5.85% Cr, 1.97% Mo, in Alloy 2 was obtained 0.035% C, 13.5% Al, elements such as Cr, Ni , Sb, B, did not exceed 1% share in the chemical composition of this alloy. Resistivity tests of Alloy 1 were carried out during the test of resistance to thermal fatigue, while Alloy 2 was tested on a prepared test stand and the resistance was measured using a four-point method.
For Alloy 1, the resistance was measured as a function of time, elongation and temperature. For comparison, the results of tests of other alloys conducted on this stand within the framework of other R&D works are presented. 
Using the material obtained during the test for castability of Alloy 2, the influence of solidification conditions on resistivity was determined. The results of calorimetric tests of this alloy are presented, determining the phase transition temperature for various solidification conditions of Alloy 2.

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