The fabrication, properties and microstructure of Cu–Ag and Cu–Nb composite conductors

The Suppression of Instabilities via Biphase Interfaces During Bulk Fabrication of Nanograined Zr

“…fcc-fcc and fcc-bcc. [17,22,[27][28][29][30] Many technically relevant metals have a hexagonal close packed (hcp) structure and, to date, making bulk nano-hcp metals has been a challenge with SPD techniques. [19,20,23,31,32] In this work, we develop a method using ARB to produce nanolayered Zr-Nb composites with layer thicknesses h of ∼90 nm.…”

A Survey of Processing Methods for High Strength-High Conductivity Wires for High Field Magnet Applications

“…The total drawing strain necessary to achieve strength level of lGpa was estimated by assuming a linear work hardening rate (about 130MPa) which was deduced from previous work [4] and verified for producing large cross-section wire [5]. A Cu-25wt%Ag billet of large diameter was hot forged at a temperature below 625 "C. The temperature of the hot forging operation was chosen in order to decrease the dendrite size of the cast materials, avoid excessive grain growth, and to allow adequate ductility for forging.…”

Microstructure, flow behavior, and bulk texture evolution of cold drawn copper–silver composites

“…The phase boundaries and grain boundaries of these two phases block the dislocation movement through the alloy, causing an increase in strength of the material. Therefore, such work-hardened composites containing a fine layer structure, show higher strength than that expected from a simple rule of mixture [14,5,15]. Following cold drawing operations, the Cu-Ag composite experiences microstructural changes.…”