Effects of Ca and Y on Microstructures and Mechanical Properties of Magnesium Alloy AZ81

Abstract:

By the scanning electron microscopy, the microstructure and mechanical properties testing, the effect of Ca and Y on the microstructure and mechanical properties of magnesium alloy AZ81 are investigated in this paper. The results show that with Ca and Y addition, the grain size is refined. And with the β-Mg₁₇Al₁₂ phase reducing significantly, there will be the precipitation of Al₂Ca and Al₂Y. Meanwhile, the mechanical properties of AZ81 magnesium alloy are enhanced at room temperature and 150°C.

• Periodical: Applied Mechanics and Materials (Volumes 488-489)
• Pages: 154-157
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.488-489.154
• Online since: January 2014
• Authors: Lei Lei Chen*, Quan An Li, Jiang Chang Xie
• Keywords: CA, Magnesium Alloy, Mechanical Property, Microstructure, Y

References

[1] Mathis K, Gubicza J, Namn H. Microstructure and mechanical behavior of AZ91 Mg alloy processed by equal channel angular pressing [J]. Journal of Alloys and Compounds, 2005, 394(1): 194-199.

DOI: 10.1016/j.jallcom.2004.10.050

[2] Aghion E, Bronfin B, Eliezer D. The role of the magnesium industry in protecting the environment [J]. Journal of Materials Processing Technology, 2001, 117: 381-385.

DOI: 10.1016/s0924-0136(01)00779-8

[3] Guodong Tong, Haifeng Liu, Yaohui Liu. Effect of rare earth additions on microstructure and mechanical properties of AZ91 magnesium alloys [J]. Transactions of Nonferrous Metals Society of China, 2010, 20(2): 336-340.

DOI: 10.1016/s1003-6326(10)60493-1

[4] Bayani, Hossein. Effect of rare earth elements addition on thermal fatigue behaviors of AZ91 magnesium alloy [J]. Journal of Rare Earths, 2009, 27(2): 255-258.

DOI: 10.1016/s1002-0721(08)60230-6

[5] Jianchang Xie, Quanan Li, Xiaoqiang Wang, Jianhong Li. Microstructure and mechanical properties of AZ81 magnesium alloy with Y and Nd elements [J]. Transactions of Nonferrous Metals Society of China, 2008, 18(2): 303-308.

DOI: 10.1016/s1003-6326(08)60053-9

[6] Anopuo Okechkwu, Yuanding Huang, Dieringa Hajo, et al. Mechanical properties and corrosion performance of AZ-Mg alloy modified with Ca and Sr [J]. SAE International Journal of Materials and Manufacturing, 2009, 1(1): 103-110.

DOI: 10.4271/2008-01-0372

[7] Zarandi Faramarz, Seale Geoff, Verma Ravi, et al. Effect of Al and Mn additions on rolling and deformation behavior of AZ series magnesium alloys [J]. Materials Science and Engineering, 2008, 496(12): 159-168.

DOI: 10.1016/j.msea.2008.05.003

[8] Tang B, Wang X-S, Li S-S, et al. Effects of Ca combined with Sr additions on microstructure and mechanical properties of AZ91D magnesium alloy [J]. Materials Science and Engineering, 2005, 21(5): 574-578.

DOI: 10.1179/174328405x43180

[9] Xiaoqiang Wang, Quanan Li, Xingyuan Zhang. Effects of yttrium on microstructure and mechanical properties of AZ81 magnesium alloy [J]. Special Casting and Nonferrous Alloys, 2007, 27(5): 384-387.