Accumulative Roll Bonding
Advanced Manufacturing Process
Accumulative Roll Bonding of Aluminium
2011
Table of Contents I. Introduction 3 II. Roll Bonding 4 II.1. Surface Preparation 4 II.2. Bonding Mechanism 5 II.3. Roll Bonded Materials and Applications 6 III. Accumulative Roll Bonding 7 III.1. Introduction to Severe Plastic Deformation (SPD) Processes 7 III.2. Accumulative Roll Bonding (ARB) Process 8 III.3. Accumulative Roll Bonded Materials 10 III.4. Material Structure after Accumulative Roll Bonding 11 III.5. Mechanical Properties after Accumulative Roll Bonding 13 III.5.1. Strength and ductility 13 III.5.2. Hardness 15 III.6. Applications of Accumulative Roll Bonding Process 16 III.6.1. Manufacturing of a Cu/Al2O3 composite 16 III.6.2. Manufacturing of nanostructure Al/SiCp Composite 17 IV. Conclusion 18 References 19
I. Introduction Research in severe plastic deformation (SPD) processes has increased a great deal over the last ten to fifteen years. Accumulative roll bonding is a radical, new (1998) process with limitless capabilities. Rolling is a process which has been used for a long time in almost all the steel mills around the world. The purpose of roll bonding is to combine two materials through rolling in order to achieve the desired mechanical properties. This report intends to explore the evolution of the mechanical properties such as ductility, yield strength, ultimate tensile strength and hardness through grain refinement at the microstructural level. The mechanism of surface deformation, grain boundary deformation and reduction of work hardening is further analysed. This report also makes an effort to understand the accumulative roll bonding process as applied to aluminium and its alloys.
II. Roll Bonding Roll bonding or also called roll welding is a cold welding process which is performed by the application of pressure on long pieces / strips through a pair of rolls. The process can be performed by
Accumulative Roll Bonding of Aluminium
2011
Table of Contents I. Introduction 3 II. Roll Bonding 4 II.1. Surface Preparation 4 II.2. Bonding Mechanism 5 II.3. Roll Bonded Materials and Applications 6 III. Accumulative Roll Bonding 7 III.1. Introduction to Severe Plastic Deformation (SPD) Processes 7 III.2. Accumulative Roll Bonding (ARB) Process 8 III.3. Accumulative Roll Bonded Materials 10 III.4. Material Structure after Accumulative Roll Bonding 11 III.5. Mechanical Properties after Accumulative Roll Bonding 13 III.5.1. Strength and ductility 13 III.5.2. Hardness 15 III.6. Applications of Accumulative Roll Bonding Process 16 III.6.1. Manufacturing of a Cu/Al2O3 composite 16 III.6.2. Manufacturing of nanostructure Al/SiCp Composite 17 IV. Conclusion 18 References 19
I. Introduction Research in severe plastic deformation (SPD) processes has increased a great deal over the last ten to fifteen years. Accumulative roll bonding is a radical, new (1998) process with limitless capabilities. Rolling is a process which has been used for a long time in almost all the steel mills around the world. The purpose of roll bonding is to combine two materials through rolling in order to achieve the desired mechanical properties. This report intends to explore the evolution of the mechanical properties such as ductility, yield strength, ultimate tensile strength and hardness through grain refinement at the microstructural level. The mechanism of surface deformation, grain boundary deformation and reduction of work hardening is further analysed. This report also makes an effort to understand the accumulative roll bonding process as applied to aluminium and its alloys.
II. Roll Bonding Roll bonding or also called roll welding is a cold welding process which is performed by the application of pressure on long pieces / strips through a pair of rolls. The process can be performed by