Anisotropy of Mechanical Properties and Microstructure Evolutions of Tensile AZ80 Magnesiumat Room Temperature

Abstract:

It is obviously different mechanical properties of the rolled magnesium alloy plate when stretched along different directions at room temperature. In this study, three groups of samples for uniaxial tension were cut from the as-rolled AZ80 plate with their tension directions either at 0°, 45°or 90°to the rolled direction (RD) of the sheet. Results show that the ductility of the 45°samples was significantly better than that of 0°and 90°samples. The electron backscatter diffraction (EBSD) technique was used to investigate the microstructure and textures evolution. Along with the increase of deformation, more low-angle grain boundaries arise in the 0°and 45°samples than the 90°samples. At the same time, the texture components that {10-10} prismatic plane perpendicular to the tension direction were significantly enhanced in three groups of samples.

• Periodical: Advanced Materials Research (Volumes 560-561)
• Pages: 1000-1004
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.560-561.1000
• Online since: August 2012
• Authors: Dan Dan Zhang, Meng Li, Ya Chen Xiao, Ping Yang
• Keywords: Twinning, AZ80, EBSD, Tensile Properties, Texture

References

[1] A. A. Luo. Magnesium: Current and potential automotive applications, JOM, 54(2002), 42-48.

[2] B. L. Mordike and T. Ebert. Magnesium: Properties-applications-potential, Mater. Sci. Eng. A, 302(20011), 37-45.

[3] Y. Chino, K. Sassa and M. Mabuchi. Texture and stretch formability of rolled Mg-Zn alloy containing dilute content of Y, Mater. Sci. Eng. A, 513-514(2009), 394-400.

DOI: 10.1016/j.msea.2009.01.074

[4] X. S. Huang, K. Suzuki, A. Watazu. I. Shigenmatsu and N, Saito. Mechanical properties of Mg-Zn alloy with a titled basal texture obtained by differential speed rolling, Mater. Sci. Eng. A, , 488(2008), 214-220.

DOI: 10.1016/j.msea.2007.11.029

[5] R. G. Ding, C, W, Chung, Y. L. Chiu and P. Lyon. Effect of ECAP on microstructure and mechanical properties of ZE41 magnesium alloy. Mater. Sci. Eng. A, 527(2010), 3777-3784.

DOI: 10.1016/j.msea.2010.02.030

[6] F. Z. Hassani and M. Ketabchi. Nano grained AZ31 alloy achieved by equal channel angular rolling process. Mater. Sci. Eng. A, 528(2011), 6246-6431.

DOI: 10.1016/j.msea.2011.12.001

[7] W. J. Kim, J. B. Lee, W. Y. Kim, H. T. Jeong and H. G. Jeong. Microstructure and mechanical properties of Mg-Al-Zn alloy sheets severely deformed by asymmetrical rolling. Scripta Mater, 56(2007), 309-312.

DOI: 10.1016/j.scriptamat.2006.09.034

[8] M. R. Barnett. Twinning and the ductility of magnesium allots PartⅠ: tension, twins. Mater. Sci. Eng. A, 464(2007), 1-7.

[9] P. Cizek and M. R. Barnett. Characteristics of the contraction twins formed close to the fracture surface in Mg-3Al-1Zn alloy deformed in tension. Scripta Mater, 59(2008), 959-962.

DOI: 10.1016/j.scriptamat.2008.06.041

[10] Q. Ma, H. El Kadiri, A. L. Oppedal, J. C. Baird, M. F. Horstemeyer and M. Cherkaoui. Twinning and double twinning upon compression of prismatic textures in an AM30 magnesium alloy. Scripta Mater, 64(2011), 813-816.

DOI: 10.1016/j.scriptamat.2011.01.003