Discontinuously Reinforced Titanium Matrix Composites (eBook)

Dr. Lujun Huang received his M.S. (2007) and Ph.D. (2011) in Materials Science at Harbin Institute of Technology, China. He is currently a full professor at the State Key Laboratory of Advanced Welding and Joining and School of Materials Science and Engineering at Harbin Institute of Technology. His research focuses on the design, fabrication, tailoring, modification, microstructure, properties, deformation and heat treatment of metal matrix composites, especially titanium matrix composites (TMCs). He has published more than 75 peer-reviewed research papers in prestigious international and national journals, and has received several awards including Heilongjiang Province’s First Class and Second Class Award of Science and Technology, and Harbin Institute of Technology’s Excellent Ph.D. Thesis Award.Dr. Lin Geng received his Ph.D. (1990) in Materials Science at Harbin Institute of Technology, China, where he is currently a full professor at the School of Materials Science and Engineering. His research focuses on the design, fabrication, tailoring, modification, microstructure, properties, deformation and heat treatment of metal matrix composites, including aluminum matrix composites (AMCs), titanium matrix composites (TMCs) and intermetallic matrix composites. He has published more than 350 peer-reviewed research papers in prestigious international and national journals, and has received two Awards of Science and Technology from Heilongjiang Province.

Contents 5
1 Introduction 8
1.1 Discontinuously Reinforced Metal Matrix Composites 8
1.2 Fundamental Aspects of Metal Matrix Composites 9
1.2.1 Reconsidering the Matrix and Reinforcement Phases 9
1.2.2 Fundamentals Behind the Design of Inhomogeneity 11
1.3 Classification of Inhomogeneous Phases 12
1.3.1 Isolated Microstructure 12
1.3.2 Bar and Laminated/Ring-Like Microstructure 14
1.3.3 3D Network Microstructure 15
1.3.4 Bi-continuous Microstructure 15
1.3.5 Theoretical Justification 16
1.4 Discontinuously Reinforced Titanium Matrix Composites 18
References 19
2 Design and Fabrication of Network-Structured Pure Ti Matrix Composites 23
2.1 Design of Network-Structured Composites 23
2.2 Fabrication of Network-Structured Composites 27
2.3 Strengthening and Toughening Mechanisms of Network-Structured Composites 34
2.4 Fabrication of (Ti5Si3 + Ti2C)/Ti Composites with Network Microstructure 35
References 43
3 Microstructure Characteristics of Ti6Al4V Matrix Composites with Network Microstructure 45
3.1 Microstructure Characteristics 45
3.2 Effects of Sintering Parameters on Microstructure of the Composites 49
3.3 Effects of TiBw Volume Fractions on Microstructure 55
References 60
4 Mechanical Behaviors of Network-Structured TiBw/Ti64 Composites 62
4.1 Microhardness 62
4.2 Effects of Sintering Parameters on the Tensile Properties 63
4.3 Effects of Network Parameters on the Tensile Properties 64
4.4 Fracture Mechanism and Models 69
4.5 Strengthening and Toughening Mechanisms 74
References 78
5 Hot Deformation Behaviors of TiBw/Ti6Al4V Composites with Network Microstructure 80
5.1 Compressed Deformation 80
5.1.1 Stress–Strain Behavior and Processing Maps 80
5.1.2 Microstructure Evolution 86
5.2 Extruded Deformation 89
5.2.1 Microstructure Evolution 89
5.2.2 Property Evolution 91
5.2.3 Fracture and Strengthening Mechanisms 94
5.3 Rolling Deformation 96
5.4 Superplastic Tensile Deformation 97
5.4.1 Superplastic Tensile Behavior 97
5.4.2 Superplastic Deformation Mechanism 99
5.4.3 Comparative Study on Superplastic Behaviors of Titanium Alloy and Composites 103
References 111
6 Effects of Heat Treatment on Microstructure and Properties of TiBw/Ti6Al4V Composites 113
6.1 Design of Heat Treatment Parameters 113
6.2 Microstructure Evolution 113
6.3 Mechanical Property Evolution 116
6.4 Effects of Heat Treatment on the Extruded Composites 119
References 125
7 TiCp/Ti6Al4V and (TiCp+TiBw)/Ti6Al4V Composites with Network Architecture 127
7.1 Fabrication of TiCp/Ti6Al4V Composites 127
7.2 Properties of TiCp/Ti6Al4V Composites 132
7.2.1 Compressive Strength 132
7.2.2 Oxidation Behavior 133
7.3 Fabrication of (TiCp+TiBw)/Ti6Al4V Composites 140
7.4 Properties of (TiCp+TiBw)/Ti6Al4V Composites 143
References 147
8 Microstructure and Properties of TiBw Reinforced Near-? Ti60 Composites 150
8.1 TiBw/Ti60 Composites with Network Microstructure 150
8.2 Effects of Extruded Deformation on TiBw/Ti60 Composite 156
8.2.1 Microstructure Evolution After ? Extrusion 158
8.2.2 Property Evolution After ? Extrusion 163
8.3 Effects of Heat Treatment on TiBw/Ti60 Composite 170
8.3.1 Microstructure Evolution After Heat Treatment 170
8.3.2 Property Evolution After Heat Treatment 176
References 179