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An EBSP study of isothermally‐annealed cold‐rolled nickel
Author(s) -
Baker I.,
Li J.
Publication year - 2004
Publication title -
microscopy research and technique
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 118
eISSN - 1097-0029
pISSN - 1059-910X
DOI - 10.1002/jemt.20042
Subject(s) - recrystallization (geology) , crystallite , annealing (glass) , materials science , microstructure , grain boundary , grain size , nickel , scanning electron microscope , isothermal process , crystallography , metallurgy , composite material , chemistry , thermodynamics , geology , physics , paleontology
Scanning electron microscopy and electron backscattered patterns, EBSP, have been employed to reveal both the grain structure and texture of 90% cold‐rolled polycrystalline nickel after 1‐hour anneals at a variety of temperatures. After annealing at either 400° or 500°C, small, cube‐oriented, equi‐axed grains were produced via primary recrystallization. At 600°C, large {124}<21 1 > oriented grains accounted for an increasing proportion of the microstructure, until at 1000°C only large grains (∼600 μm) and a sharp {124}<21 1 > texture were present. Detailed EBSP analyses of the grain boundaries surrounding the large abnormally grown grains observed at 600°C demonstrated that formation of the secondary recrystallization texture was due to migration of high‐mobility, random high‐angle boundaries around grains that had a size advantage, consistent with the Abbruzzese‐Lücke model. Microsc. Res. Tech. 63:289–297, 2004. © 2004 Wiley‐Liss, Inc.