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Abstract
This paper shows the possibility to control the strength and plasticity properties of heterophase metastable steels based on the Fe-Mn solid solution as a result of purposeful alteration of the phase composition and fault structure by varying the hydroextrusion process parameters. Practical means of realization of high-strength states (б0.2 ≳ 1000… 1400 MPa) in 05G20S2 and I4G20K2F steels using the hydroextrusion are proposed.