Abstract
Studies on the mechanical properties and microstructures of as-cast and extruded Mg-Ce-Zn-Zr and Mg-Nd-Zn-Zr alloys have been made before and after heat treatment. The results show that the mechanical properties of as-cast Mg-Ce and Mg-Nd alloys are as good as those of typical die cast AZ91 alloy and the heat resistant WE43 alloy. In Nd-containing alloys, the precipitated phase Mg12 Nd contributes significantly to age hardening. The mechanical properties of extruded alloys are improved obviously compared with those of as-cast alloys. The ultimate strength is 257.8 MPa for extruded Mg-Ce alloy and 265.6 MPa for extruded Mg-Nd alloy. Extrusion is a useful method to improve both the strengths and elongations of the two experimental alloys at both ambient and elevated temperatures. The grain refinement and precipitation strengthening are the main strengthening mechanisms in the alloys. Tensile fracture surfaces show a dimple pattern after extruding and therefore reflect an improved elongation.
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References
Cahn R W. Microstructures and Properties of Nonferrous Alloys[M]. Beijing: Science Press, 1999.
Luo A, Pekguleryuz M O. Cast magnesium alloys for elevated temperature applications [J]. J Mater Sci, 1994, 29: 5295–5271.
JI Ze-sheng. Research process and new technology of magnesium alloy in Japan [J]. The Chinese Journal of Nonferrous Metals, 2004, 14(12): 1977–1984.
Polmear I J. Magnesium alloys and applications[J]. Mater Sci & Tech, 1994, 10: 1–16.
Khosrhoshahi R A, Pilkington R, Lorimer G W. The microstructure and creep of as-cast and extruded WE54 alloy [A]. Proceeding of the Third International Magnesium Conference[C]. Manchester, 1996. 261–256.
YU Kun, LI Wen-xian. Production, properties and microstructure of Mg-RE-Zn-Zr alloy [J]. J Mater Sci & Technol, 2002, 18: 378–380.
Park W J, Park H, Kim D H. Structure and decomposition behavior of rapid solidified Mg-Nd-X alloys [J]. Mater Sci Eng, 1994, A179/180: 637–640.
Brooks C R. Heat Treatment Structure and Properties of Nonferrous Alloys[M]. OH: Metals Park, 1982.
Polmear I J. Light Alloys: Metallurgy of Light Metals (2nd)[M]. London: Edward Arnold, 1989.
ASM. Magnesium and Magnesium Alloys[M]. OH: Metals Park, 1999.
YU Kun, LI Wen-xian, WANG Ri-chu, et al. Research, development and application of wrought magnesium alloy [J]. The Chinese Journal of Nonferrous Metals, 2003, 13(2): 277–287.
Kojima Y. Progressive steps in the platform science and technology for advanced magnesium alloys[J]. Mater Sci Forum, 2003, (419–422): 3–20.
Kainer J U. Magnesium Alloys and Technology [M]. Weinheim: WILEY-VCH Verlag GmbH & Co kGaA, 2003.
Secker R. The renaissance in magnesium [J]. Advanced Mater & Proc, 1998(9): 31–35.
Kovzmkov V R Z, Mnlyukov A V. Structure and properties of ultra fine-grained materials produced by severe plastic deformation[J]. Mat Sci Eng A, 1993, 168: 141–148.
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Foundation item: Project(2004BA311A11 - 1) supported by the National Key Program of the 10th Five-Year Plan of China
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Yu, K., Li, Wx. & Wang, Rc. Mechanical properties and microstructure of as-cast and extruded Mg-(Ce, Nd)-Zn-Zr alloys. J Cent. South Univ. Technol. 12, 499–502 (2005). https://doi.org/10.1007/s11771-005-0110-1
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DOI: https://doi.org/10.1007/s11771-005-0110-1