Texture evolution during recrystallisation of cold rolled TWIP steel

A TWinning Induced Plasticity (TWIP) steel was cold rolled to 42% thickness reduction

followed by isochronal annealing for 300 s between 600-850 °C. Bulk texture evolution during

recrystallisation was investigated by X-Ray Diffraction. While the development of the α-fibre after

cold rolling is typical of low stacking fault energy materials, anomalously higher intensities were

noted for the Goss ({110}<001>) compared to Brass ({110}<112>) orientations. Upon

recrystallisation, the main rolling texture components were retained and ascribed to nucleation at

orientations close to those of the deformed matrix followed by annealing twinning which leads to

crystallographically identical variants. Unlike previous texture investigations on austenitic steels,

the relatively homogeneous deformation microstructure and uniform distribution of subsequent

nucleation sites led to the retention of the F ({111}<112>) orientation. Moreover, the firsthand

observation of the Rotated Copper ({112}<011>) orientation in TWIP steel is attributed to the

second order twinning of the A ({110}<111>) orientation.