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Differential Speed Rolling of Ni 3 Al‐Based Intermetallic Alloy − Electron Backscatter Diffraction and X‐Ray Diffraction Study on Structure and Texture Evolution
Author(s) -
Polkowski Wojciech,
Jóźwik Paweł,
Łyszkowski Radosław,
Bojar Zbigniew
Publication year - 2017
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201600618
Subject(s) - electron backscatter diffraction , materials science , intermetallic , diffraction , alloy , electron diffraction , texture (cosmology) , metallurgy , x ray crystallography , selected area diffraction , crystallography , transmission electron microscopy , optics , microstructure , nanotechnology , physics , image (mathematics) , artificial intelligence , computer science , chemistry
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.