Quasi-static and dynamic investigation of an advanced high strength and corrosion resistant 10 % Cr nanocomposite martensitic steel

The mechanical response of an advanced high strength and corrosion resistant 10 % Cr nanocomposite steel (ASTM A1035CS Grade 120) is measured under uniaxial tension compression at the strain rates 10−4 s−1, 10-2 s-1, 100 700 3000 s−1. experiments are performed 22 °C as well 80 to investigate material behavior expected temperature rise due adiabatic deformation 15 strain. Additionally, different compression-shear hat-shaped specimens tested quasi-static dynamic localization this material. exhibits small rate sensitivity (SRS) during loading, but a pronounced SRS between rates. Tension-compression asymmetry also observed both temperatures. Experiments reveal decrease in flow stress indicating sensitive thermal softening heating. Load-Unload-Reload (LUR) jump reasoning behind approximate insensitivity ASTM A new constitutive model developed using novel dependent with modified Hockett-Sherby (MHS) hardening incorporating Lode angle dependence capture tension-compression asymmetry. used predict LUR experiments. Finally, unique thermo-mechanical discussed regards heating, strain-partitioning, phase transformation.