Neutron Scattering

In the following, two experimental examples of texture analysis are given based on
results from the Jülich neutron texture diffractometer .
6.3 Rolling and Recystallization Texture of Copper
One project in the field of applications of neutrons in materials science was concerned with
investigations on the longtime stability of copper textures [11] . The rolling texture of copper
(Fig . 18.21) is characterized by these main components [12] : the ,copper`- {112}, the
,brass`- {110} and the ,S`-comportent {123} . The main comportent of
recrystallized copper is the ,cube'-comportent {001} and a minor component
{122} (Fig.18 .22) .
Fig. 18 .21 : Measuredpolefigues ofa Cu rolling texture; indicated are ideal orientations of
the copper (triangle), the brass (square) and the S-comportent (circle)
Fig. 18 .22 : Modelling ofa Cu recrystallization texture by superposition ofthe main and the
minor components {001} (left) and {1221 (center), respectively
A high purity copper sheet was cold rolled to a final thickness reduction of 95% . This sheet of
1 mm thickness was cut into plates of 10x10 mm2 . A part of these plates was annealed at
300°C for 20 min to achieve recrystallization . Two cubes, each of 10 mm edge length, of
purely rolled copper and purely recrystallized copper where then prepared by glueing ten
plates of the respective materials on top of each other. Identical orientations ofthe individual
plates was taken care of. Neutron diffraction pole figures (Fig . 18 .23) have been repeatedly
performed on both specimens over a period of about six years in which no further treatment of
the specimens was undertaken .
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