Accumulative roll bonding (ARB) is a severe plastic deformation (SPD) process. It is a method of rolling a stack of metal sheets, which are repeatedly rolled to a severe reduction ratio, sectioned into two halves, piled again and rolled. It has been often proposed as a method for the production of metal materials with ultrafine grain

microstructure Microstructure is the very small scale structure of a material, defined as the structure of a prepared surface of material as revealed by an optical microscope above 25× magnification. The microstructure of a material (such as metals, polymer ...

. ARB is a modification of repeated forging and folding method which has been in use since the end of Bronze Age or the beginning of Iron for sword making. The earliest works on modern ARB were by N. Tsuji, Y. Saito and co-workers. To obtain a single slab of a solid material, the rolling involves not only deformation, but also

roll bonding Roll bonding is a solid state, cold welding process, obtained through Rolling (metalworking), flat rolling of sheet metals. In roll bonding, two or more layers of different metals are passed through a pair of flat rollers under sufficient pressure ...

References

{{reflist Industrial processes Joining Metalworking Metal forming