Effect of Severe Plastic Deformation on Microstructures and Properties of AgCuO Composites

Abstract

The microstructures and properties of AgCuO composites were researched after severe plastic deformation. The results showed that CuO particles secondly were dispersed along with increasing of true strain. The purpose of microstructure homogenization was achieved. The value of density, tensile strength and resistivity was increasing along. The value of hardness was reduced. The value of the elongation was increasing before true strain 8.0 and decreasing after true strain 8.0 in AgCuO composites.

Microstructural evolution of Ag-0.20wt-%Mg-0.19wt-%Ni alloy in under-oxidized condition

“…The Ag-Mg-Ni ingot was repeatedly cold rolled into a thin sheet with a thickness of 0.6 mm, and the overall thickness was reduced by more than 90%. Due to severe plastic deformation in the rolling process, large grains were broken into fine grains, and the ultra-fine grains as well as homogenisation of microstructure could be obtained [24,25]. Besides, annealing treatments were carried out between the rolling cycles to avoid cracking of the sheet.…”

Using the Radial Shear Rolling Method for Fast and Deep Processing Technology of a Steel Ingot Cast Structure

“…Higheffective microstructure processing methods such as high-pressure torsion (HPT) [47][48][49] are unfortunately not applicable outside laboratories, and even more so for ingots, not applicable due to sample size limitations and method scaling factors. The same can be said for cyclic extrusion (CEC) [50,51], accumulated roll bonding (ARB) [52], and some other methods [53][54][55][56][57][58][59]. Of course, ECAP can be used for pressing ingots, but this is not technologically easy due to the need for several pressing cycles and considerable effort and equipment strength requirements.…”