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Compositional evolution of long-period stacking ordered structures in magnesium studied by atom probe tomography

Title
Compositional evolution of long-period stacking ordered structures in magnesium studied by atom probe tomography
Author
김진경
Keywords
Mg alloy; Long-period-stacking-ordered structure; Atom probe tomography; Chemical composition
Issue Date
2018-11
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
SCRIPTA MATERIALIA, v. 156, Page. 55-59
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.
URI
https://www.sciencedirect.com/science/article/pii/S1359646218304366https://repository.hanyang.ac.kr/handle/20.500.11754/98830
ISSN
1359-6462
DOI
10.1016/j.scriptamat.2018.07.017
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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