J. Mater. Sci. Technol. ›› 2014, Vol. 30 ›› Issue (8): 731-735.DOI: org/10.1016/j.jmst.2014.03.008

• Orginal Article •     Next Articles

Annealing-induced Hardening in a Nanostructured Low-carbon Steel Prepared by Using Dynamic Plastic Deformation

L.X. Sun1, N.R. Tao1, *, M. Kuntz2, J.Q. Yu3, K. Lu1   

  • Received:2013-12-24 Online:2014-05-20 Published:2014-09-30
  • Contact: * Corresponding author. Prof., Ph.D.; Tel.: t86 24 23971891; E-mail address: nrtao@imr.ac.cn (N.R. Tao).

Abstract: Lamellar nanostructures were induced in a plain martensitic low-carbon steel by using dynamic plastic deformation at room temperature. The nanostructured steel was hardened after annealing at 673 K for 20 min, with a tensile strength increased from 1.2 GPa to 1.6 GPa. Both the remained nanostructures and annealing-induced precipitates in nano-scale play key roles in the hardening.

Key words: Nanostructure, Annealing, Precipitation hardening, Low-carbon steel, Dynamic plastic deformation