Narrow Results

The cold-rolled pure copper sheets were annealed with and without a high magnetic field of 12 T. The results showed that the magnetic annealing could promote the formation of the initial recrystallized cube texture. The magnetic annealing did not dramatically change the final annealing textures, but the intensity of the recrystallized cube texture is obviously different. The differences of the recrystallized cube orientation intensity between the specimens with and without the field annealing may be attributed to the effects of the magnetic field on the mobility of grain boundaries.

The influence of hydrogen ions on the lattice parameters of pure copper was examined using X-ray diffraction analysis. The introduction of hydrogen ions into copper lattice results in expanding of its lattice causing change in the interplanar spacing. The higher charging current density and longer charging time applied to this material, the greater the lattice distortion producing higher residual stresses. Increasing the current density or charging time in the material caused the brass lattice to continue to expand as indicated by measuring the relative volume change. It was found that the interplanar spacing and line breadth of brass peaks increased with either current density or charging time.