Differential Speed Rolling of Ni 3 Al‐Based Intermetallic Alloy − Electron Backscatter Diffraction and X‐Ray Diffraction Study on Structure and Texture Evolution

Results of electron backscatter diffraction and X‐ray diffraction study on a microstructure, long range order, and texture evolution upon a differential speed rolling (DSR) of Zr and B doped Ni 3 Al‐based intermetallic alloy, are shown in the paper. The material is subjected to a 2‐pass cold rolling to the final thickness reduction of 50% under following upper to lower roll speed ratio R values: R = 1 (the equal speed rolling), R = 2, R = 3, and R = 4 (the DSR). Obtained results supported by literature data allows concluding that an introduction of the rolls speed asymmetry leads to a higher accumulated strain facilitating a strain induced disordering of L1 2 superlattice. This transformation is assisted by a changeover of a crystallographic texture type; indirectly indicating on a possible activation of mechanical twinning.