Microstructure and Mechanical Behaviors of AZ91 Magnesium Alloy with Thermal Rate Treatment Technique


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Microstructure and mechanical behaviors of AZ91 cast magnesium alloys with melt superheating and thermal rate treatment technique were studied. Alloy grains thicken at 820°C and refine at 870°C when they contains Mn element and the crucible had no coating on the internal surface. Moreover, the strengthening γ phase is more dispersive and uniform at 870°C. Thermal rate treatment significantly improved the microstructure, mechanical behaviors and casting quality of AZ91 alloy as microstructure of AZ91 alloy reserves some characteristics of the high temperature melt.



Advanced Materials Research (Volumes 306-307)

Edited by:

Shiquan Liu and Min Zuo




Y. Z. Zhou et al., "Microstructure and Mechanical Behaviors of AZ91 Magnesium Alloy with Thermal Rate Treatment Technique", Advanced Materials Research, Vols. 306-307, pp. 471-474, 2011

Online since:

August 2011




[1] M.M. Avedesian, H. Baker, Magnesium and Magnesium Alloys, ASM International, USA, (1999).

[2] X.Q. Zheng, Q.D. Wang, Y.Z. Lü, et al., Progress in magnesium alloy application, Foundry 11 (1998) 39-43.

[3] J.J. Guo, H.Z. Fu, Alloy melts and their treatment, Mechanical Industry Press, Beijing (2005).

[4] J. Koike, Y. Kawamura, K. Hayashi, et al., Mechanical properties of rapidly solidified Mg-Zn alloys, Mater. Sci. Forum 350-351 (2000) 105-110.

DOI: https://doi.org/10.4028/www.scientific.net/msf.350-351.105

[5] K. Yu, W.X. Li, R.C. Wang, Effects of heat treatment on microstructures and mechanical properties of ZK60 magnesium alloyThe Chinese Journal of Nonferrous Metals 17 (2007) 188-192.

[6] D.K. Xu, L. Peng, L. Liu, Y.B. Xu, Influence of heat treatments on the mechanical properties of forged ZK60-Y magnesium alloy, Chinese Journal of Materials Research 19 (2005) 573-580.

[7] Z.M. Wang, H.R. Geng, G.R. Zhou, et al. Temperature-induced anomalous structural changes of Al-12wt. %Sn-4wt. %Si melt and its infl uence on ascast structure, China Foundry 7 (2010) 138-142.

[8] H.S. Chen, F. Q. Zu, J. Chen, et al., The effect of melt overheating on the melt structure transition and solidified structures of Sn-Bi40 alloy, Science in China Series E: Technological Sciences 51 (2008) 1402- 1408.

DOI: https://doi.org/10.1007/s11431-008-0130-9

[9] S.S. Lu, K.D. Gu, L.S. Zheng, Nonferrous Cast Alloys and Melting, National Defence Industry Press, Beijing, (1983).

[10] C.S. Roberts, Magnesium and Its Alloys, Wiley, New York, (1960).

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