화학공학소재연구정보센터
Materials Science Forum, Vol.396-4, 557-562, 2002
Inhomogeneous warm rolling and annealing of AA3104: Shear texture development and thermal stability
Two types of commercial AA3104 hot band - fully and partially recrystallised - have been warm rolled at 200 degreesC to achieve high friction between the rolls and the material. Subsequently the samples underwent an annealing treatment. X-ray textures have been measured for each processing step at 6 different thickness levels. Starting from the two different initial hot band textures both materials revealed the development of a strong through thickness texture gradient. In the centre of the sheet a common plane strain beta-fibre texture evolved. Between s=0.4 and s=0.6 the texture type changed significantly to a typical fcc shear texture being strongest at the surface. The observed difference in shear texture intensity for the two materials led to the conclusion, that stronger initial beta-fibre components cause weaker shear textures. This was analysed by simulations. The annealing textures at the surface revealed a degradation of almost all texture components except of the {111}<112> orientation on the gamma-fibre and removed the textural difference of the two materials.