Preface ........................................................ xi
1 General Introduction ......................................... 1
Nomenclature ................................................. 1
Phases ....................................................... 2
Production ................................................... 3
2 Early History of Iron and Steel .............................. 4
Native Iron .................................................. 4
Wrought Iron ................................................. 6
Steel ........................................................ 8
References .................................................. 10
3 Modern Steel Making ......................................... 11
Blast Furnace ............................................... 11
Coke ........................................................ 13
Bessemer Steel-Making Process ............................... 13
Open-Hearth Steel-Making Process ............................ 15
Basic Oxygen Furnace ........................................ 16
Electric Arc Process ........................................ 18
Furnace Linings and Slags ................................... 19
Casting ..................................................... 20
Hot Rolling ................................................. 21
Cold Rolling ................................................ 22
Recycling ................................................... 22
References .................................................. 24
4 Constitution of Carbon Steels ............................... 25
Microstructures of Carbon Steels ............................ 25
Pearlite Formation .......................................... 30
References .................................................. 34
5 Plastic Strength ............................................ 35
Dislocation Density ......................................... 35
Strain Hardening ............................................ 35
Grain Size .................................................. 37
Solute Effects .............................................. 39
Temperature Dependence ...................................... 39
Hardness .................................................... 40
Strain-Rate Dependence of How Stress ........................ 40
Combined Effects of Temperature and Strain Rate ............. 46
Superplasticity ............................................. 49
Strength Differential Effect ................................ 49
References .................................................. 50
6 Annealing ................................................... 51
General ..................................................... 51
Recovery .................................................... 51
Relief of Residual Stresses ................................. 54
Recrystallization ........................................... 54
Grain Growth ................................................ 58
References .................................................. 65
7 Information Mechanisms and Crystallographic Textures ........ 66
Slip and Twinning Systems ................................... 66
Wire Textures in bcc Metals ................................. 66
Rolling Texture ............................................. 71
Compression Texture ......................................... 72
Recrystallization Textures .................................. 77
References .................................................. 79
8 Substitutional Solid Solutions .............................. 80
Phase Diagrams .............................................. 80
Ternary}Phase Diagrams ...................................... 80
Effects df Solutes on the Eutectoid Transformation .......... 80
Effect of Solutes on Physical Properties .................... 81
Solid Solution Hardening .................................... 81
Carbide-Forming Tendencies .................................. 88
Solute Segregation to Grain Boundaries ...................... 89
References .................................................. 89
9 Interstitial Solid Solutions ................................ 90
Atomic Diameters ............................................ 90
Lattice Sites for Interstitials ............................. 90
Lattice Expansion with C, N ................................. 92
Solubility of Carbon and Nitrogen ........................... 93
Snoek Effect in bcc Metals .................................. 95
References .................................................. 97
10 Diffusion ................................................... 98
General ..................................................... 98
Mechanisms of Diffusion ..................................... 99
Diffusion of Interstitials ................................. 102
References ................................................. 103
11 Strain Aging ............................................... 104
Yielding and Lьders Bands .................................. 104
Strain Aging ............................................... 105
Dynamic Strain Aging ....................................... 109
References ................................................. 112
12 Austenite Transformation ................................... 113
Kinetics of Austenization .................................. 113
Pearlite Formation ......................................... 113
isothermal Transformation .................................. 120
Bainite .................................................... 123
Continuous Cooling Diagrams ................................ 123
Martensite ................................................. 125
Retained Austenite ......................................... 126
Transformation to Martensite ............................... 128
Martensite Types ........................................... 132
Special Heat Treatments .................................... 133
Miscellany ................................................. 135
References ................................................. 136
13 Hardenability .............................................. 137
Jominy End-Quench Test ..................................... 137
Hardenability Bands ........................................ 140
Ideal Diameter Calculations ................................ 142
Boron ...................................................... 146
Miscellany ................................................. 149
References ................................................. 149
14 Tempering and Surface Hardening ............................ 150
Tempering .................................................. 150
Secondary Hardening ........................................ 156
Temper Embrittlement ....................................... 157
Carburizing ................................................ 158
Carburizing Kinetics ....................................... 159
Kinetics of Decarburization ................................ 162
Carboaustempering .......................................... 163
Nitriding .................................................. 163
Carbonitriding ............................................. 164
Case Hardening Without Composition Change .................. 165
Furnace Atmospheres ........................................ 165
References ................................................. 165
15 Low-Carbon Sheet Steel ..................................... 167
Sheet Steels ............................................... 167
Strength ................................................... 168
Grades of Low-Carbon Steel ................................. 168
Weathering Steel ........................................... 174
Heating During Deformation ................................. 174
Taylor-Welded Blanks ....................................... 175
Special Sheets ............................................. 176
Surface Treatment .......................................... 177
Special Concerns ........................................... 178
References ................................................. 178
16 Sheet Steel Formability .................................... 179
Anisotropic Yielding ....................................... 182
Effect of Strain Hardening on the Yield Locus .............. 186
Deep Drawing ............................................... 187
Stamping ................................................... 189
Forming Limits ............................................. 191
References ................................................. 193
17 Alloy Steels ............................................... 195
Designation System ......................................... 195
Effect of Alloying Elements ................................ 195
Applications ............................................... 197
References ................................................. 197
18 Other Steels ............................................... 198
Hadfield Austenitic Manganese Steel ........................ 198
Maraging Steels ............................................ 198
Tool Steels ................................................ 199
Heat Treatment of Tool Steels .............................. 201
Note of Interest ........................................... 202
References ................................................. 204
19 Stainless Steels ........................................... 205
General Corrosion Resistance ............................... 205
Ferritic Stainless Steels .................................. 205
Martensitic Stainless Steels ............................... 208
Austenitic Stainless Steels ................................ 209
Other Stainless Steels ..................................... 212
Sensitization .............................................. 214
Oxidation Resistance ....................................... 216
References ................................................. 217
20 Fracture ................................................... 218
Ductile Fracture ........................................... 218
Brittle Fracture ........................................... 222
Transition Temperature ..................................... 226
Liquid Metal Embrittlement ................................. 227
Hydrogen Embrittlement ..................................... 227
Fatigue .................................................... 229
References ................................................. 233
21 Cast Irons ................................................. 234
Production ................................................. 234
General .................................................... 234
White Irons ................................................ 237
Gray Irons ................................................. 237
Compact Graphite Iron ...................................... 242
Ductil&Cast Iron ........................................... 244
Malleable Cast Iron ........................................ 244
Matrices ................................................... 246
Austempering of Cast Irons ................................. 250
Damping Capacity ........................................... 254
References ................................................. 255
22 Magnetic Behavior of Iron .................................. 256
General .................................................... 256
Ferromagnetism ............................................. 257
Magnetostatic Energy ....................................... 261
Magnetocrystalline Energy .................................. 262
Magnetostriction ........................................... 262
Physical Units ............................................. 263
The B-H Curve .............................................. 264
Bloch Walls ................................................ 266
Soft Versus Hard Magnetic Materials ........................ 266
Soft Magnetic Materials .................................... 266
Silicon Steel .............................................. 270
Hard Magnetic Materials .................................... 272
Summary .................................................... 274
References ................................................. 275
23 Corrosion .................................................. 276
Corrosion Cells ............................................ 276
Polarization and Passivity ................................. 279
Pourbaix Diagram ........................................... 283
Types of Corrosion ......................................... 284
Corrosion Control .......................................... 285
Rust ....................................................... 287
Direct Oxidation ........................................... 287
References ................................................. 289
Appendix I: Physical Properties of Pure Iron .................. 291
Appendix II: Approximate Hardness Conversions and Tensile
Strengths of Steels ........................................ 293
Index ......................................................... 295
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