Journal
MATERIALS & DESIGN
Volume 52, Issue -, Pages 1035-1042Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2013.06.048
Keywords
Magnesium alloy; Long periodic stacking ordered; Tensile properties
Categories
Funding
- foundation Doctoral Teachers, Beijing University of Technology [X0009011201101]
- National Natural Science Fund of China [51071004]
- National Science and Technology supporting plan of the twelve five-year [2011BAE22B04-2]
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The microstructure and mechanical properties of the Mg-5Y-4Gd-0.5Zn-0.4Zr alloy have been investigated. The results suggested that the 14H long periodic stacking ordered (LPSO) structure was formed during isothermal homogenization. Furthermore, the presence of the 14H LPSO structure resulted in refined microstructure and weak texture while harmful to improve ageing hardening response after hot extrusion. The Mg-5Y-4Gd-0.5Zn-0.4Zr alloy after homogenization for 16 h at 500 degrees C (as-extruded alloy B) followed by subsequent hot extrusion displayed the highest peak hardness value during ageing at 220 degrees C. The yield tensile strength and the ultimate tensile strength of the peak-aged alloy B were about 300 MPa and 370 MPa, respectively. (C) 2013 Elsevier Ltd. All rights reserved.
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