Microstructure and mechanical properties of spray-deposited Mg-12.55Al-3.33Zn-0.58Ca-1Nd alloy

Journal Article · Thu Jul 15 00:00:00 EDT 2010 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2010.04.009· OSTI ID:22066263

Taishang, Dong; Xiaohu, Hou ^[1]; Chunwang, Zhao; Yongming, Xing ^[2]

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1. College of Materials Science and Engineering, Inner Mongolia University of Technology, 010051, Hohhot (China)
2. College of Sciences, Inner Mongolia University of Technology, 010051, Hohhot (China)

A Mg-Al-Zn-Ca-Nd magnesium alloy was prepared by spray forming technology, and the spray-deposited alloy was subsequently hot-extruded with a reduction rate of 16:1 at 623 K. The mechanical properties of the extruded alloy were investigated, and the result shows that the spray-formed Mg alloy offers superior tensile strength with poor ductility. The morphologies, fracture characteristic and chemical compositions of the extruded alloy were then explored by scanning electron microscopy with energy dispersive spectrometer. Furthermore, microstructure of the extruded alloy was examined by X-ray diffractometry and transmission electron microscopy. The results indicate that the microstructure of the spray-deposited magnesium alloy consists of {alpha}-Mg and Al{sub 2}Ca phases, and the Al{sub 2}Ca compound is distributed along the grain boundaries of the primary {alpha}-Mg. Moreover, twin substructure is found to exist in microstructure of the Al{sub 2}Ca phase, rare earth Nd in the Al{sub 2}Ca phase in the form of solid solution.

• OSTI ID: 22066263
• Journal Information: Materials Characterization, Vol. 61, Issue 7; Other Information: Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CALCIUM ALLOYS
CHEMICAL COMPOSITION
DUCTILITY
FRACTURES
GRAIN BOUNDARIES
MAGNESIUM BASE ALLOYS
MORPHOLOGY
NEODYMIUM ALLOYS
SCANNING ELECTRON MICROSCOPY
SOLID SOLUTIONS
SPRAYS
TEMPERATURE DEPENDENCE
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY
ZINC ALLOYS