Segregation effects caused by unidirectional solidification of nickel-base alloys have been studied. It was found that: the composition in the branches of dendrites and y′-particles is constant along the growth path; the segregation of titanium, aluminium, and molybdenum increases towards the interdendritic region and of nickel and chromium increases towards the base of the dendrites; the occurrence of y–y′ nodules increases in those parts of the castings which solidified in regions remote from the chill plate.
MST/237
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