High-Speed Tensile Deformation Behavior of a Metastable 18Cr–6Ni–0.2N–0.1C Steel

The present study investigated the high-speed deformation behavior of 6Ni–0.2N–0.1C steel. 0.2% proof stress (0.2% PS) steel increased with an increase in strain rate () but tensile strength (TS) indicated almost same value at above 10−1 s−1. Uniform elongation (U.El) largely decreased . TS and U.El 103 s−1 were as those SUS304 When effect on mechanical properties was compared between steels, dependence PS larger that different 100 And decrease discussed from viewpoint change flow maximum load point estimated results proposed austenite phase hardly transformed into deformation-induced martensite (α′) up to are influenced by higher α′. It is difficult for produce TRIP high rates because martensitic transformation suppressed.