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

Abstract:

Article Preview

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.

Info:

Periodical:

Advanced Materials Research (Volumes 306-307)

Edited by:

Shiquan Liu and Min Zuo

Pages:

471-474

DOI:

10.4028/www.scientific.net/AMR.306-307.471

Citation:

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

Export:

Price:

$38.00

[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: 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: 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).

In order to see related information, you need to Login.