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Funct. Mater. 2017; 24 (2): 264-269.

doi:https://doi.org/10.15407/fm24.02.264

Effect of Y addition on the microstructures and mechanical properties of Mg–Gd–Y–Sm–Zr alloys

Fu sanling1, Li quanan2, Chen Jun2, Zhang Qing2

1 College of Physics and Engineering; Henan University of Science and Technology, Luoyang, 471023, China
2 School of Materials Science and Engineering; Henan University of Science and Technology, Luoyang 471023, China

Abstract: 

The microstructure and mechanical properties of Mg–12Gd–xY–Sm–0.5Zr (x = 0, 1, 3, 5; mass%) alloys were investigated. Results showed β’-Mg5Gd phase composition evolution of Mg5(Gd,Y). The tensile strength of the alloys are better the WE54 alloy at high temperatures (200–300 °C). The optimal mechanical properties of the Mg-12Gd-3Y-1Sm-0.5Zr alloy are achieved at high temperatures, and the maximum tensile strength of this alloy is 323 MPa at 250 °C. The short heat-resisting performance of Mg–Gd–Y–Sm–Zr alloys under the high temperature will provide new scientific basis for the development of heat resistant magnesium alloys.

Keywords: 
Y, Mg–Gd–Sm–Zr alloy, microstructure, tensile property.
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