Abstract
ZK60-xcerium alloys were studied, where x mass fraction is 0, 0.52%, 0.94%, 1.51% and 1.98%, respectively. Influence of Ce contents and heat-treatment on microstructure and tensile properties was analyzed. The results show that cast ZK60 alloy containing no Ce has coarse crystal grains, and lots of segregation aggregates around the grain-boundary. However, the alloys containing Ce have refined grains, and grain-boundaries are purified at the same time. Obvious dynamic recrystallization occurs in tested alloys after hot-extrusion. Tensile strength heightens with the increase of Ce content, and grows higher after aging at 150 °C for 0–24 h (T5 treatment). Comparing tensile properties of investigated alloys in different states, it can be concluded that synthetical properties of the alloy with 1.51% Ce addition is the best of all. In extruded state, σ b and δ of this alloy are 318.6 MPa and 14.4%, respectively. After aging for 24 h, σ b is 338.6 MPa and δ is 15.6%.
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Eliezer A, Gutman E M. Corrosion fatigue of die-cast and extruded magnesium alloys[J]. Journal of Light Materials, 2001, 1(3): 179–186.
Matucha K H. Structure and Properties of Nonferrous Alloys[M]. Beijing: Science Press, 1999. (in Chinese)
Polmear I J. Recent developments in light alloys[J]. Trans JIM, 1996, 37(1): 12–31.
Idris M H. Precision casting of a magnesium-base alloy[J]. Foundryman, 1997, 90(4): 140–144.
Idris M H. Processing and evaluation of investment cast magnesium-base alloy[J]. AFS Trans, 1996, 104(20–23): 237–244.
Doege E, Droder K. Sheet metal forming of magnesium wrought alloys-formability and process technology [J]. Journal of Materials Processing Technology, 2001, 115(1): 14–19.
Sanchez C, Nussbaum G. Elevated temperature behaviour of rapidly solidified magnesium alloys containing rare earths [J]. Materials Science and Engineering, 1996, 221(1–2): 48–57.
ZHANG Shi-jun, LI Wen-xian. The effect of Ce on the grain size and as-cast mechanical properties of magnesium alloy AZ31[J]. Foundry, 2002, 15(2): 767–771. (in Chinese)
Bae D H, Lee M H. Application of quasicrystalline particles as a strengthening phase in Mg-Zn-Y alloys [J]. 2002, 342(1–2): 445–450.
GU Ming-yuan, WU Zheng-an. Effects of reinforcements on the aging response of a ZK60-based hybrid composite[J]. Materials Science and Engineering, 1999, 272(2): 257–263.
MA Chun-jiang, LIU Man-ping. Tensile properties of extruded ZK60-RE alloys[J]. Materials Science and Engineering, 2003, 349(1–2): 207–212.
XU Guang-xian. Rare Earths[M]. Beijing: Metallurgical Industry Press, 2002. (in Chinese)
Machining Manual of Light Metal Group. Machining Manual of Light Metal[M]. Beijing: Metallurgical Industry Press, 1979. (in Chinese)
CUI Yue-xian, WANG Chang-li. Metal Fracture Analysis[M]. Harbin: Industry University Press, 1998. (in Chinese)
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Xia, Cq., Wang, Yn., Wu, Ar. et al. Effects of cerium on microstructure and mechanical properties of ZK60 alloy. J Cent. South Univ. Technol. 12, 515–520 (2005). https://doi.org/10.1007/s11771-005-0114-x
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DOI: https://doi.org/10.1007/s11771-005-0114-x