The study of grain orientation distributions and grain boundary misorientation distributions in 304 and 316L stainless steels |
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Authors: | V Y Gertsman O V Mishin K Tangri |
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Institution: | (1) Metallurgical Science Laboratory, Department of Mechanical Engineering, University of Manitoba, R3T 2N2 Winnipeg, Manitoba, Canada;(2) Institute for Metals Superplasticity Problems, Russian Academy of Sciences, 450001 Ufa, Russia;(3) Institute for Metals Superplasticity Problems, Russian Academy of Sciences, 450001 Ufa, Russia;(4) Metallurgical Science Laboratory, Department of Mechanical Engineering, University of Manitoba, R3T 2N2 Winnipeg, Manitoba, Canada |
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Abstract: | Orientation distribution functions in two recrystallized austenitic stainless steels (AISI types 304 and 316L) with known grain boundary misorientation distributions have been studied. Previously obtained data on grain boundary spectra in these steels have been re-examined and analyzed from the point of view of texture analysis.The results obtained have shown that there is no unambiguous relatonship between grain boundary misorientation distribution and grain orientation distribution (ODF) determined by the X-ray analysis in the materials under study. This ambiguity is due to the following reason. In the grain boundary misorientation statistics only nearest-neighbor grains are taken into account, but in the orientation distribution function orientations are averaged over the entire volume of the specimen independent as to whether the grains are adjacent or not. Two main results were established for the steels under study: (i) Textures of the two steels differ, though their grain boundary misorientation distributions are similar; and (ii) misorientations of the majority of grain boundaries can be described as rotations about the axes close to 110. |
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Keywords: | Grain boundaries texture grain boundary misorientation distribution orientation distribution function |
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