1  Overview
  1.1  The Technology of Controlled Rolling and Controlled Cooling
  1.2  g & D Program of "Super Steels" and "New Generation
Steel Materials"
  1.3  The Formation of Ultra-fine Grai and Microstructural
Refinement of Steels-Core Technique for the R & D of New
Generation Steel Materials
  1.4  Theory and Technology on Ultra-fine Grai
    1.4.1  The state change and microstructure refinement of
austenite during hot deformation
    1.4.2  Deformation induced ferrite traformation
      1.4.2.1  Thermodynamic coideration of deformation induced
ferrite traformation
      1.4.2.2  DIFT phase traformation and characte of traformed
products
    1.4.3  Deformation induced precipitation and medium temperature
phase traformation control
    1.4.4  The influence of nanometer size precipitates on ultra
fine grain steel
    1.4.5  Ultra grain refinement of alloy structural steels and
the way of increasing the resistance agait delayed fracturing
    1.4.6  The development of carbide-free bainite/marteite
multiple phase steels
  1.5  Several Key Technologies Concerning the Development of Ultra
Fine Grain Steels
    1.5.1  Steel cleanness
    1.5.2  Refinement and homogenization of solidification
structure
    1.5.3  Brief introduction of welding technique and economy of
ultra fine grain steels
  References
2  Refinement of Austenitie Microstrueture and Its Influence on γα→
Traformation
  2.1  Thermomechanical Control Process and Refinement of
Austenitic Microstructure
    2.1.1  Rolling at the austenite-recrystallization temperature
region (RARTR)
      2.1.1.1  Metadynamic recrystallization
      2.1.1.2  Static recrystallization
    2.1.2  Rolling in austenite non-recrystallization temperature
region
    2.1.3  Rolling at the under-cooled austenite
    2.1.4  Accelerated cooling and microstructural refinement
  2.2  Influence of Austenitic Recrystallization on Subsequently
Traformed Grain Size
    2.2.1  Influence of recrystallized or deformed austenite on
ferrite traformation
      2.2.1.1  Influence of recrystallized austenite on ferrite
traformation
      2.2.1.2  Influence of partially recrystallized austenite on
ferrite traformation
      2.2.1.3  Influence of non-recrystallized austenite on ferrite
traformation
    2.2.2  Influence of recrystallization in the austenite on DIFT
   References
3  Deformation Induced Ferrite Traformation
  3.1  Introduction
  3.2  Experimental Confirmation and Study Method of DIFT
    3.2.1  Microstructure observation on the quenched sample
    3.2.2  Mechanical behavior measurement
    3.2.3  Dilatometry measurement
    3.2.4  In-situ X-ray diffraction
  3.3  Thermodynamics of DIFT
    3.3.1  Deformation stored energy
    3.3.2  Traformation driving force
    3.3.3  Ad3 veus deformation stored energy
  3.4  Kinetics of DIFT
    3.4.1  Microstructural evolution and nucleation sites
    3.4.2  Traformation fraction veus strain
  ……