The paper presents the equations of regression on the alloying elements influenceon the s-phase formation according to the FACOMP calculating system. The experimentallyobtained temperature-time dependencies for such elements as Al, Si, Cr, allow evaluating thechange of the alloy chemical composition under work in the temperature interval of 1273-1623 K.It was found out, that under prolonged testing of the alloys, such elements as Mo, W promotethe alloyed phases formation, which allows to recommend application of the economicallyalloyed alloys.
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