Chapter 1 Strengthening and Toughening Principle of Steel 1．1 Strengthening mechanisms of steel 1．1．1 Solid solution strengthening 1．1．2 Dislocation strengthening 1．1．3 Precipitation strengthening 1．1．4 Fine grain strengthening 1．1．5 Phase transformation strengthening 1．2 Plasticity enhancement and toughening mechanism of steel 1．2．1 Plasticity enhancement mechanism of steel 1．2．2 Toughening mechanism of steel 1．2．3 Toughening methods of steel References Chapter 2 Evolution and Control of Austenite Structure of Steel 2．1 Recrystallization of austenite deformed at high temperature 2．1．1 Dynamic recovery and recrystallization 2．1．2 Control of static recrystallization 2．1．3 Recrystallization zone diagram 2．2 Austenite deformation energy and control 2．3 Formation and control of austenite at low temperature 2．3．1 Control of austenite structure at low temperature 2．3．2 Stability of retained austenite References Chapter 3 Dynamic Phase Transformation and Control of Hot Deformed Austenite 3．1 Phase transformation of over-cooling austenite and test method 3．1．1 Thermal analysis method 3．1．2 Differential scanning calorimetry method 3．1．3 Acoustic emission method 3．1．4 Resistivity method 3．1．5 Thermodilatometry 3．2 Transformation of deformed austenite to ferrite 3．2．1 Influence of deformation on transformation of austenite to ferrite （y-a） 3．2．2 Phase transformation driving force and nucleation of deformed austenite 3．2．3 Influence of thermal deformation on y-a transformation temperature 3．2．4 Deformation and recrystallization of ferrite 3．3 Transformation of deformed austenite to pearlite 3．3．1 Pearlite nucleation and pearlite morphology parameters 3．3．2 Nucleation and growth of pearlite 3．3．3 Pearlite transformation temperature in deformation condition 3．4 Transformation of deformed austenite to bainite 3．4．1 Structure and nucleation of bainite 3．4．2 Driving force of bainite transformation 3．4．3 Continuous cooling transformation of typical low carbon bainite steel 3．4．4 Bainite transformation and MA structure control 3．5 Transformation of deformed austenite to martensite 3．5．1 Influence factors of martensite transformation temperature 3．5．2 Martensite structure morphology 3．5．3 Relationship between morphology and mechanical property of martensite References Chapter 4 Control of Dissolution and Precipitation of Microalloying Elements 4．1 Features of microalloying element compounds 4．2 Dissolution of microalloying elements at high temperature 4．3 Precipitation and control of microalloying elements 4．3．1 Precipitation kinetics of microa]]oying e]ements 4．3．2 Precipitation in rolling process 4．3．3 Precipitation in cooling process 4．3．4 Precipitation in aging process 4．4 Growth of precipitates 4．5 Microalloying elements and their roles in steel 4．5．1 Inhibition of growth of austenite grains during heating 4．5．2 Inhibition of recrystallization of deformed austenite 4．5．3 Strengthening and toughening effect References Chapter 5 Structure and Property Control in the Production of Steel Plates 5．1 Process flow and characteristics of production of steel plates 5．1．1 Process flow of production of ordinary steel plates 5．1．2 Process flow of production of special steel plates 5．1．3 Functions of ordinary processes of the production of steel plates 5．1．4 Key processes of structure and property control 5．2 Structure and property control for typical steel plate varieties 5．2．1 High-strength pipeline steel p]ate 5．2．2 Stee] plates for bridges 5．2．3 High-rise bui]ding steel 5．2．4 Steel used in ships and marine works 5．2．5 Steel plates used for boiler vessels 5．3 New processes for control of structure and property of steel plates 5．3．1 Intermediate cooling （IC） and high-efficiency controlled rolling 5．3．2 Gradient temperature rolling （GTR） 5．3．3 Direct quenching （DQ-T） 5．3．4 Intermittent direct quenching （IDQ） and direct quenching & partitioning （DQP） 5．3．5 Heat-treatment online process （HOP） 5．3．6 Relaxation-precipitation-control （RPC） 5．3．7 Normalizing controlled cooling （NCC） References Chapter 6 Control of Structure and Property of Hot Rolled Strip 6．1 Process flow and characteristics of production of hot rolled strips 6．1．1 Conventional continuous strip rolling process flow 6．1．2 Thin slab continuous casting & rolling process flow 6．1．3 Thin strip continuous rolling process flow 6．2 Structure control during the production of hot rolled strip 6．2．1 Structure control during heating of cast slab 6．2．2 Controlled rolling in the production of hot rolled strip 6．3 Controlled cooling and phase transformation control of hot rolled strip 6．3．1 Controlled cooling process after rolling of strips 6．3．2 Influences of cooling process on structure and property 6．4 Typical application of structure and property control of hot rolled strip 6．4．1 Structure and property control of hot continuous cast TRIP steel 6．4．2 Control of structure and property of hot-rolled pipeline steel strip References
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