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Title: Formation and characterization of microstructure of as-cast Mg–6Gd–4Y–xZn–0.5Zr (x = 0.3, 0.5 and 0.7 wt.%) alloys

Abstract

Mg–6Gd–4Y–xZn–0.5Zr (x = 0.3, 0.5 and 0.7 wt.%) alloys were prepared via conventional ingot metallurgy (I/M) in this study. The as-cast microstructures of these alloys were established by X-ray diffraction (XRD) analyses, optical microscope (OM), scanning electron microscope (SEM) and transmission electron microscope (TEM) observations. Lamellar stacking order (SF) and 14H-type long period stacking order (LPSO) structure within α-Mg matrix are formed in the three as-cast alloys. The eutectic secondary phase is (Mg,Zn){sub 24}(Gd,Y){sub 5} for the alloy containing 0.3 wt.% Zn, while, it is (Mg,Zn){sub 3}(Gd,Y) for the alloys containing 0.5 wt.% Zn and 0.7 wt.% Zn. Moreover, X phase-(Mg,Zn){sub 12}(Gd,Y) is formed in the latter two as-cast alloys. - Highlights: • LPSO structure has first been found in as-cast Mg–6Gd–4Y–xZn–0.5Zr. • X-phase exists in as-cast Mg–6Gd–4Y–0.3(0.5)Zn–0.5Zr. • Zn content results in different β-phase in the studied alloys.

Authors:
 [1];  [1];  [1]; ;  [1]
  1. National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200240 (China)
Publication Date:
OSTI Identifier:
22285044
Resource Type:
Journal Article
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 79; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; EUTECTICS; METALLURGY; MICROSTRUCTURE; SCANNING ELECTRON MICROSCOPY; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION

Citation Formats

Wu, Y. J., State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, Xu, C., Zheng, F. Y., State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, Peng, L.M., E-mail: plm616@sjtu.edu.cn, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, Zhang, Y., Ding, W. J., and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240. Formation and characterization of microstructure of as-cast Mg–6Gd–4Y–xZn–0.5Zr (x = 0.3, 0.5 and 0.7 wt.%) alloys. United States: N. p., 2013. Web. doi:10.1016/J.MATCHAR.2013.03.002.
Wu, Y. J., State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, Xu, C., Zheng, F. Y., State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, Peng, L.M., E-mail: plm616@sjtu.edu.cn, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, Zhang, Y., Ding, W. J., & State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240. Formation and characterization of microstructure of as-cast Mg–6Gd–4Y–xZn–0.5Zr (x = 0.3, 0.5 and 0.7 wt.%) alloys. United States. https://doi.org/10.1016/J.MATCHAR.2013.03.002
Wu, Y. J., State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, Xu, C., Zheng, F. Y., State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, Peng, L.M., E-mail: plm616@sjtu.edu.cn, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, Zhang, Y., Ding, W. J., and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240. 2013. "Formation and characterization of microstructure of as-cast Mg–6Gd–4Y–xZn–0.5Zr (x = 0.3, 0.5 and 0.7 wt.%) alloys". United States. https://doi.org/10.1016/J.MATCHAR.2013.03.002.
@article{osti_22285044,
title = {Formation and characterization of microstructure of as-cast Mg–6Gd–4Y–xZn–0.5Zr (x = 0.3, 0.5 and 0.7 wt.%) alloys},
author = {Wu, Y. J. and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240 and Xu, C. and Zheng, F. Y. and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240 and Peng, L.M., E-mail: plm616@sjtu.edu.cn and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240 and Zhang, Y. and Ding, W. J. and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240},
abstractNote = {Mg–6Gd–4Y–xZn–0.5Zr (x = 0.3, 0.5 and 0.7 wt.%) alloys were prepared via conventional ingot metallurgy (I/M) in this study. The as-cast microstructures of these alloys were established by X-ray diffraction (XRD) analyses, optical microscope (OM), scanning electron microscope (SEM) and transmission electron microscope (TEM) observations. Lamellar stacking order (SF) and 14H-type long period stacking order (LPSO) structure within α-Mg matrix are formed in the three as-cast alloys. The eutectic secondary phase is (Mg,Zn){sub 24}(Gd,Y){sub 5} for the alloy containing 0.3 wt.% Zn, while, it is (Mg,Zn){sub 3}(Gd,Y) for the alloys containing 0.5 wt.% Zn and 0.7 wt.% Zn. Moreover, X phase-(Mg,Zn){sub 12}(Gd,Y) is formed in the latter two as-cast alloys. - Highlights: • LPSO structure has first been found in as-cast Mg–6Gd–4Y–xZn–0.5Zr. • X-phase exists in as-cast Mg–6Gd–4Y–0.3(0.5)Zn–0.5Zr. • Zn content results in different β-phase in the studied alloys.},
doi = {10.1016/J.MATCHAR.2013.03.002},
url = {https://www.osti.gov/biblio/22285044}, journal = {Materials Characterization},
issn = {1044-5803},
number = ,
volume = 79,
place = {United States},
year = {Wed May 15 00:00:00 EDT 2013},
month = {Wed May 15 00:00:00 EDT 2013}
}