Materials Science Forum, Vol.408-4, 1471-1476, 2002
Recrystallization textures and the evolution of the P-orientation as a function of precipitation in an AA3103 alloy
The effect of precipitation on the evolution of recrystallisation. textures after cold rolling of a commercial Al-Mn alloy has been studied. Different pre-annealing treatments resulted in concentrations of 0.5, 0.42 and 0.31wt%, respectively. In addition, the as cast condition was also studied, containing 0.8 wt% Mn in solution. During cold rolling and subsequent annealing treatments, the Mn may precipitate as Al6Mn-dispersoids upon the present boundaries and retard the recrystallisation process. Concurrent precipitation resulted in relatively strong P and ND-rotated cube texture, with an intensity of more than 10 times random in the ODF-analysis. Without any concurrent precipitation, the texture was dominated by the cube texture, and was found to increase in strength with increasing temperature and decreasing amount of Mn in solid solution. After 95% reduction by cold rolling, the recrystallised grain size was significantly larger and elongated in the rolling direction when concurrent precipitation took place, while almost equiaxed and small when very little precipitation took place. An attempt to model the recrystallisation textures by the use of an approach to combine nucleation and growth probabilities gave good agreement with some of the experimentally measured recrystallisation textures.