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Electron Backscatter Diffraction (EBSD)

The orientation relationship for the phase transformation between fcc β and the hexagonal α is (111) and (0001) planes parallel to each other as shown in these in-situ heating experiments.

EDAX Periodic Table of Elements - Cobalt

EDAX Periodic Table of Elements - Cobalt

S. I. Wright, D. P. Field and M. M. Nowell (2005) “Impact of Local Texture on Recrystallization and Grain Growth via In-Situ EBSD.” Proceedings of the Fourteenth International Conference on Textures of Materials published in Materials Science Forum, 495-497, ed. P. Van Houtte and L. Kestens, Trans Tech., Switzerland, 1121-1130.

Cobalt based alloy with good creep strength and oxidation resistance

EBSD grain averaged IQ map of a crept sample of cobalt based alloy
EBSD grain averaged image quality map of crept sample overlaid with grain boundaries. Boundaries shaded red are random high angle boundaries (>10°) and blue are coincident site lattice boundaries. Thick black lines denote cracked boundaries.

C.J. Boehlert, S.C. Longanbach, M. Nowell, and S.I. Wright (2008) “The Evolution of Grain Boundary Cracking Evaluated Through In-Situ Tensile-Creep Testing of Udimet alloy 188” Journal of Materials Research 23: 500-506.