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Compositional evolution of long-period stacking ordered structures in magnesium studied by atom probe tomography
- Authors
- Kim, Jin-Kyung; Guo, Wei; Choi, Pyuck-Pa; Raabe, Dierk
- Issue Date
- Nov-2018
- Publisher
- Pergamon Press Ltd.
- Keywords
- Mg alloy; Long-period-stacking-ordered structure; Atom probe tomography; Chemical composition
- Citation
- Scripta Materialia, v.156, pp.55 - 59
- Indexed
- SCIE
SCOPUS
- Journal Title
- Scripta Materialia
- Volume
- 156
- Start Page
- 55
- End Page
- 59
- ISSN
- 1359-6462
- Abstract
- Mg alloys containing long-period stacking ordered (LPSO) structures are strong and ductile compared to conventional Mg alloys. We study here the compositional evolution of LPSO structures in a Mg97Y2Zn1 (at.%) alloy upon annealing at 500 degrees C using atom probe tomography. In the material annealed for 2.511, the Zn/Y ratio of the building blocks in the interdendritic LPSO phase (0.73) is close to the stoichiometric composition of Y(8)Zn(6)L1(2) clusters while that in plate-type LPSO structures (0.66) slightly deviates from the ideal value. The Y/Zn enrichment in LPSO structures in the alpha-Mg matrix slightly decreases with increasing annealing time. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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Related Researcher
- Kim, Jin kyung
- ERICA 공학대학 (DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING)