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Evolution of atomic distribution during devitrification of bulk metallic glass investigated by atom probe microscopy
Mridha S., Jaeger D.L., , Banerjee R., Mukherjee S.
Published in Elsevier
Volume: 158
Pages: 99 - 103
Evolution of atomic distribution during devitrification of a zirconium-based bulk metallic glass, Zr41.2Ti13.8Cu12.5Ni10.0Be22.5, was investigated using three-dimensional atom probe microscopy. Atom probe analysis showed uniform distribution of constituent elements for the as-cast alloy, with no phase separation. The metallic glass was annealed at different temperatures to study the crystallization pathways and the length scale, distribution, and morphology of the phases formed. Devitrification was found to proceed via the formation of a metastable icosahedral phase. The devitrification pathway is explained based on "strong-liquid" behavior of this alloy. © 2015 Elsevier B.V. All rights reserved.
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