Microstructure and Mechanical Properties of Aged Mg-12Gd-2Y-0.5Zr Alloy Addition with Sb


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The Mg-12Gd-2Y-0.5Sm-0.5Sb-0.5Zr (wt.%) alloy was prepared by casting technology. The microstructure was investigated after solution and aging treatment (i.e. T6 heat treatment). Tensile tests were performed at a crosshead speed of 1 mm/min at ambient and elevated temperature atmosphere. The results show that the aged alloy was mainly composed of α-Mg matrix, Mg5Gd phase and dispersed long-period ordered β' precipitates. At 523K, the alloy has shown the superior tensile strength (i.e. 345.5 MPa). The strength mechanism was solution strengthening of RE and precipitation strengthening of dispersive LPO structure β' and stable Mg5Gd precipitates in Mg matrix.



Advanced Materials Research (Volumes 261-263)

Edited by:

Jingying Zhao






K. J. Li and Q. A. Li, "Microstructure and Mechanical Properties of Aged Mg-12Gd-2Y-0.5Zr Alloy Addition with Sb", Advanced Materials Research, Vols. 261-263, pp. 693-696, 2011

Online since:

May 2011





[1] T. Honma, T. Ohkubo and S. Kamado: Acta Mater Vol. 55(2007), p.4137–4150.

[2] Qiuming Peng, Xiuli Hou and Lidong Wang: Mater. Des Vol. 30(2009), p.292–296.

[3] Z. Yang, J.P. Li and Y.C. Guo: Mater. Sci. Eng. A Vol. 454 (2007), p.274–280.

[4] T. Honma, T. Ohkubo, K. Hono and S. Kamado: Mater. Sci. Eng. A Vol. 395(2005), p.301–306.

[5] S.M. He, X.Q. Zeng and L.M. Peng: J. Alloys Compd Vol. 427 (2007), p.316–323.

[6] Rokhlin L L, Dobatkina T V and Nikitina N I: Mater. Sci. Forum Vol. 1(2003), p.291–296.

[7] B.L. Mordike: Mater. Sci. Eng. A Vol. 324(2002), p.103–112.

[8] Zhang Qinglian: Inorganic Chemistry Volume. 7 (Science press, Beijing 1984).

[9] Yang Mingbo, Pan Fusheng and Cheng Renju: Mater. Sci. Eng. A Vol. 489(2008), p.413–418.

[10] Y. C. Guo, J.P. Li and J.S. Li: J. Alloys Compd Vol. 450 (2008), p.446–451.

[11] LI Kejie, LI Quanan and JING Xiaotian: Rare metals Vol. 28(2009), pp.516-522.

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