Journal
SCRIPTA MATERIALIA
Volume 155, Issue -, Pages 144-148Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2018.06.037
Keywords
MnAl Heusler alloy; Massive transformation and twins; Solute segregation; Transmission electron microscopy (TEM); Atom probe tomography (APT)
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Electron microscopy and atom probe tomography were combined to investigate the crystallography and chemistry of a single twin boundary (TB) in a rare-earth-free ferromagnetic MnAl Heusler alloy. The results establish a significant segregation of Mn along the twin boundaries. An enrichment of approx. similar to 8 at.% Mn was measured along the twin boundary with a confined depletion outside the twin boundary, suggesting short range solute diffusion occurring during massive transformation. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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