Materials Science Forum, Vol.408-4, 827-831, 2002
Microstructure and texture analysis in twin-roll strip cast Fe-36wt%Ni alloy
Fe-36wt%Ni alloy sheet was produced using a vertical type twin roll strip casting process followed by cold rolling and annealing. The microstructure and texture through the thickness direction of as-cast strip, in cold rolled and annealed specimens were studied using Orientation Distribution Function (ODF) calculated from X-ray diffraction, optical microscopy and OIM (Orientation Imaging Microscopy). The columnar dendrites zone had been tilted by an angle of 25degrees to 30degrees from the strip normal direction. In the dendrites zone, {100} fiber texture evolved through the thickness direction. In the center layer, minor copper type texture component was formed. During the strip casting, plane strain compression in the center layer could be the reason for the evolution of the copper component. During cold rolling, beta-fiber texture which is a typical deformation texture in FCC metals was developed but weak cube component was evolved simultaneously. Strong {100}<001>, cube texture, was most likely formed during the final annealing of the cold rolled strip.