先进陶瓷模具：设计、制造与性能PDF电子书下载

Chapter 1 State of the Art of Ceramic Dies 1

1.1 Introduction 1

1.2 Composition,processing technology and mechanical property of ceramic die materials 2

1.2.1 Al2O3 based ceramics 2

1.2.2 ZrO2 based ceramics 3

1.2.3 Sialon ceramics 6

1.2.4 Si3N4 ceramics 7

1.2.5 Cermets 7

1.3 Engineering performance of ceramic dies 8

1.3.1 Drawing die 8

1.3.2 Extrusion die 10

1.3.3 Punching die 12

1.4 Surface modification techniques and their application in ceramic dies 13

1.4.1 Surface coating 13

1.4.2 Surface composite 15

1.4.3 Surface plating 16

1.5 Nanocomposite ceramics and the application in dies 17

1.5.1 Composition and mechanical property of nanocomposite ceramics 17

1.5.2 Application of nanocomposite ceramics in dies 20

References 20

Chapter 2 Optimum Design of Ceramic Die Materials with Computational Intelligence 23

2.1 Introduction 23

2.2 Optimization based on the BP algorithm 25

2.2.1 BP algorithm 26

2.2.2 Experimental data 27

2.2.3 Compositions optimization for ceramic die material 28

2.2.4 Optimization of hot pressing parameters 31

2.3 Optimization based on immune algorithm 34

2.3.1 Immune algorithm 34

2.3.2 Experimental data 37

2.3.3 Compositions optimization for cermet die material 37

2.4 Optimization with the hybrid GA-BP method 40

2.4.1 GA-BP Ⅰ algorithm 40

2.4.2 GA-BP Ⅱ algorithm 40

2.4.3 Compositions optimization for ceramic die material 43

2.4.4 Optimization of hot pressing parameters 49

2.5 Optimization with the hybrid IGA method 55

2.5.1 Process of IGA 55

2.5.2 Compositions optimization based on IGA 56

2.5.3 Optimization result 58

2.6 Optimization with the combined algorithm of BP,GA and IA 59

2.6.1 Experimental data 59

2.6.2 Optimization of the hot pressing process 60

2.6.3 Optimization of the flexural strength and hardness 63

References 65

Chapter 3 Optimum Design of the Structure of Combined Ceramic-steel Die 69

3.1 Introduction 69

3.2 Structural optimization design of the cold extrusion combined ceramic-steel die 70

3.2.1 Selection of component 71

3.2.2 Determination of parameters 71

3.2.3 Modeling 74

3.2.4 Orthogonal test 74

3.3 Thermal stress analysis of cold extrusion die 80

3.3.1 Process of finite element analysis 81

3.3.2 Distribution of temperature field 82

3.3.3 Distribution of stress field 83

3.3.4 Structural optimization 86

3.4 Thermal stress analysis of the combined die at the hot extruding 90

3.4.1 Distribution of temperature field 91

3.4.2 Distribution of stress field 92

3.5 Thermal stress analysis of the hot extrusion process 95

3.5.1 Model of the backward extrusion combined die 95

3.5.2 Distribution of temperature field 95

3.5.3 Distribution of stress field 96

3.5.4 Structural optimization 97

References 98

Chapter 4 Al2O3 Based Nano-miero Composite Ceramic Die Material 100

4.1 Material preparation 100

4.2 Test method 101

4.3 Mechanical property 102

4.3.1 Effects of the content of nano Ti(C,N)on the mechanical properties 102

4.3.2 Effects of the content of (Mo+Ni)on the mechanical properties 103

4.3.3 Effects of the hot pressing process on the mechanical properties 104

4.4 Microstructure 106

4.4.1 Effects of the content of nano Ti(C,N) on the microstructure 106

4.4.2 Effects of the content of(Mo+Ni)on the microstructure 109

4.4.3 Effects of the hot pressing process on the microstructure 110

4.5 Toughening and strengthening mechanisms 113

4.5.1 Grain fining effect 113

4.5.2 Intragranular structure effect 113

4.5.3 Changing of fracture mode 114

4.5.4 Crack deflection 115

4.5.5 Crack bridging 115

4.5.6 Crack branching 115

4.5.7 Grain pulling-out 116

References 117

Chapter 5 ZrO2 Based Nano-micro Composite Ceramic Die Materials 119

5.1 Introduction 119

5.2 ZrO2/Ti(C,N)nano-nano composite ceramic die material 121

5.2.1 Experiment 122

5.2.2 Effect of Y2O3 content on the mechanical properties 122

5.2.3 Effect of Y2O3 content on the microstructure 124

5.2.4 Toughening and strengthening mechanism 126

5.3 ZrO2/TiC micro-nano composite ceramic die materials 132

5.3.1 Experiment 132

5.3.2 Effect of TiC content on the composite material 134

5.3.3 Effect of Al2O3 content on the composite material 136

5.3.4 Effect of Y2O3 content on the composite material 137

5.3.5 Effects of CeO2 content on the composite material 139

5.3.6 Effects of hot pressing temperature on the composite material 141

5.3.7 Effects of holding time on the composite material 143

5.4 ZrO2/TiB2 nano-micro composite ceramic die material 145

5.4.1 Experiment 145

5.4.2 Components and mechanical property of ceramic material 148

5.4.3 Hot pressing parameters 150

References 156

Chapter 6 Ti(C,N)Based Nano-micro Composite Cermet Die Material 159

6.1 Material preparation 159

6.2 Test method 160

6.3 Mechanical property 160

6.3.1 Effects of the content of nano ZrO2 on the mechanical properties 160

6.3.2 Effects of the content of WC on the mechanical properties 162

6.3.3 Effects of the hot pressing process on the mechanical properties 163

6.4 Microstructure 165

6.5 Toughening mechanisms 168

6.5.1 Toughening by nano ZrO2 particles 168

6.5.2 Transformation toughening of nano ZrO2 169

6.5.3 Other toughening mechanisms 170

References 170

Chapter 7 Friction and Wear Behavior of Ceramic Die Materials 172

7.1 Introduction 172

7.2 Test method of friction and wear 172

7.3 Tribological behavior of Al2O3 based nano-micro composite ceramic die material 173

7.3.1 Friction behavior 173

7.3.2 Wear behavior 175

7.3.3 Wear mechanisms 176

7.4 Tribological behavior of ZrO2 based nano-micro composite ceramic die material 178

7.4.1 Friction and wear property of ZrO2/TiC/Al2O3 178

7.4.2 Friction and wear property of ZrO2/TiB2/Al2O3 184

7.5 Tribological behavior of Ti(C,N)based nano-micro composite cermet die material 187

7.5.1 Friction and wear behaviors 187

7.5.2 Friction resistance 188

7.5.3 Wear resistance 189

7.5.4 Wear mechanisms 190

References 192