SPD Deformation of Pearlitic, Bainitic and Martensitic Steels

The deformation behavior of nearly fully pearlitic, bainitic and martensitic steels during severe plastic is summarized in this paper. Despite their significantly different yield stresses microstructures, hardening SPD similar. Due to the enormous capacity limited by strength tool materials. microstructure at obtainable limit strain are quite similar, which a nanocrystalline structure order 10 nm, dependent on strain. nanograins partially supersaturated with carbon grain boundaries stabilized carbon. Another characteristic feature anisotropy shape results an strength, ductility fracture toughness. important for development ultra-strong materials essential type frequently used application where under rolling contact sliding important.