Equal channel angular rolling (ECAR) process is one of the severe plastic deformation (SPD) methods that have been used to make ultra-fine grain (UFG) materials with improving the mechanical properties of samples. After performing the process at several paths, a large strain is applied to the material that can cause decreasing the grain size and improving the mechanical and physical properties ...

The effects of ultrasonic impact treatment (UIT) and UIT with equal channel angular pressing (ECAP), on the microstructure Cu37Zn alloy are studied at ambient cryogenic temperatures. With decreasing process temperature, highly twinned areas submicro/nano-scale thickness/spacing, together dislocation tangles/cells, introduced in alloy. Direct microscopy observation stored energy release analysis...