-a

The texture has a strong influence on the thermal cycling resistance of platelets that are metallized on both sides (Klein et aI., 1989). This is shown is Fig. 26. This effect may be understood on the basis of discontinuity of properties across grain boundaries, illustrated in Fig. 13b. In a strong texture a continuous cleavage path can be formed, whereas in random

:::J -- 200 d "-

textures this path is stopped at the grain boundaries, as shown in Fig. 27 (Bocker et al., 1995). The influence of texture is thus through the MODF, which is, however, closely related to the ODF according to Eq. 41. Hence "texture tailoring," which is in this case also "grain boundary design," had to be done with the aim of reaching random textures.