Journal
MATERIALS LETTERS
Volume 169, Issue -, Pages 168-171Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2015.12.080
Keywords
Mg-Gd-Zn alloy; Cast; Microstructure; Mg10GdZn phase; 18R-type long period stacking ordered (LPSO) structure
Funding
- National Natural Science Foundation of China [51304135, 51301089, 51401125]
- Shanghai Jiaotong University [14X100010041]
- Program of Shanghai Subject Chief Scientist [14XD1425000]
- Shanghai Pujiang Program [15PJ1403200]
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A lamellar Mg10GdZn phase was observed near the secondary eutectic beta-phase ((Mg,Zn)(3)Gd) in an as-cast Mg-Gd-Zn alloy. It shows that the Mg10GdZn phase exhibits a 18R-type long period stacking ordered (LPSO) structure, while the lamellae within the oc-Mg matrix exhibits a 14H-type LPSO structure. Moreover, it reveals that the hardness and elastic modulus of Mg10GdZn phase are much higher than those of the oc-Mg by nano-mechanical measurements. (C) 2016 Published by Elsevier B.V.
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