COLD-ROLLING TEXTURE DEVELOPMENT OF ALPHA GAMMA DUPLEX STAINLESS-STEELS/

The cold rolling texture development of two alpha/gamma duplex stainle ss steels (DSS) with similar volume fractions of both phases but with totally different microstructures were investigated. Due to the limite d number of available pole figures using X-rays, for the calculation o f the ODFs bath a direct method and a recent iterative series expansio n method were used. The results were checked by neutron diffraction me asurements, The austenitic phases of both DSS behave similarly to sing le phase materials with a low stacking fault energy which develop a br ass-type rolling texture, in contrast, the texture development of the ferritic phases strongly differs from those of single phase ferrites. Instead of a fibre type texture the alpha-phase in both DSS exhibits a peak dominated texture regardless of whether it is the matrix phase o r not. These differences, as well as the sharpness of both phases, are explained by the presence of the second phase.