Compressive Properties of AM60 Magnesium Alloy by High-Pressure Solution and Subsequent Atmospheric-Pressure Aging Treatment

Abstract:

As-cast AM60 magnesium alloy was solid dissolved with exercising different pressures (atmospheric-pressure, 3, 4 and 5 Gpa) to it and subsequently aged for 10 h at 200 °C under atmospheric-pressure. The aging alloys were characterized by optical microscope, and their compressive properties were investigated by a Gleeble-3500 hot-stimulation machine. The results show that, compared with exercising atmospheric-pressure during solution treatment, exercising high-pressure during this process causes that the α-Mg grains of the subsequent aging alloy are more fine and uniform, while the β-Mg17Al12 phases transform into fine particles and aggregate to form gobbets or strips. With increasing the pressure gradually, the compressive strength of the aging alloy increases up to 4 Gpa and then decreases, while the maximum plastic strain decreases up to 4 Gpa and then increases.

• Periodical: Applied Mechanics and Materials (Volume 189)
• Pages: 143-146
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.189.143
• Online since: July 2012
• Authors: Shu Ying Wang
• Keywords: Aging, Compressive Property, High-Pressure, Magnesium Alloy

References

[1] S.H. Kang, Y.S. Lee, J.H. Lee, Effect of grain refinement of magnesium alloy AZ31, Journal of Materials Processing Technology, 201(2008) 436-440.

DOI: 10.1016/j.jmatprotec.2007.11.305

[2] F.K. Chen, T.B. Huang, Formability of stamping magnesium-alloy AZ31 sheets, Journal of Materials Processing Technology, 142 (2003) 643-647.

DOI: 10.1016/s0924-0136(03)00684-8

[3] R. Ambat, W. Zhou, Electroless nickel-plating on AZ91D magnesium alloy effect of substrate, Surface and Coating Technology, 179 (2004) 124-134.

DOI: 10.1016/s0257-8972(03)00866-1

[4] J.M. Zhang, B.L. Jiang, Z.H. Wang, Effects of Solution and Aging on Microstructure of AZ80 Magnesium Alloy, Heat Treatment of Metals, 32 (2007) 6-10.

[5] L, Cizek, M. Greger, Pawlica L, Study of selected properties of magnesium alloy AZ91 after heat treatment and forming, Journal of Materials Processing Technology, 157-158 (2004) 466-471.

DOI: 10.1016/j.jmatprotec.2004.07.149

[6] B.C. Liu, S.M. Xiong, High pressure die casting process of magnesium alloys and its modeling and simulation for automobile industry (in Chinese), Journal Of Automotive Safety And Energy,  2 (2011) 1-11.