Effect of Clock Rolling on Microstructures and Properties of AZ31 Magnesium Alloy Sheets


Article Preview

In this paper, the influence of clock rolling(CR)on microstructure and texture as well as the anisotropic properties of AZ31 alloy sheet was systematically studied. Compared to unidirectional rolling(UR), clock rolling leads to more uniform microstructure in annealed sample. The average grain sizes of the two kinds of sheet are similar. Texture measurement reveals that clock rolling can effectively weaken the intensity of basal texture and generate more symmetrical basal texture. Clock rolled samples exhibit weaker anisotropy of mechanical properties due to its lower basal texture intensities and more symmetrical basal texture in tensile test.



Edited by:

Yafang Han, Fusheng Pan, Jianmao Tang, Chungen Zhou




X. Huang et al., "Effect of Clock Rolling on Microstructures and Properties of AZ31 Magnesium Alloy Sheets", Materials Science Forum, Vol. 686, pp. 40-45, 2011

Online since:

June 2011




[1] CHEN Zhen-hua. Wrought magnesium alloy [M]. Beijing: Chemical Industry Press, 2005: 1-10. (In Chinese).

[2] Westengen H K. Magnesium die casting: from ingots to automotive parts [J]. Light Metal Age, 2000, 58 (3-4): 44-52.

[3] Aghion E, Bronfin B, Eliezer D. The role of the magnesium industry in protecting the environment [J]. Journal of Materials Processing Technology, 2001, 117(3): 381–385.

DOI: https://doi.org/10.1016/s0924-0136(01)00779-8

[4] Xiao Lin. Plastic Deformation of Hexagonal Close-Packed Metals [J]. Rare Metal Materials and Engineering, 1995, 24(6): 21-28.

[5] Hiroyuki Watanabe, Toshiji Mukai, Koichi Ishikawa. Effect of temperature of differential speed rolling on room temperature mechanical properties and texture in an AZ31 magnesium alloy [J]. Journal of Materials Processing Technology, 2007, 182(1-3): 644-647.

DOI: https://doi.org/10.1016/j.jmatprotec.2006.08.010

[6] ZHAN Qing-lai, LU Chen, ZHU Yan-ping, DING Wen-jiang, HE Ji-hong. Effect of rolling method on microstructure and properties of AZ31 magnesium alloy thin sheet[J]. The Chinese Journal of Nonferrous Metals, 2004, 14 (3) : 391-397.

[7] M.Y. Huh, S.Y. Cho, O. Engler. Randomization of the annealing texture in aluminum 5182 sheet by cross-rolling [J]. Materials Science and Engineering A, 2001, 315(1-2): 35-46.

DOI: https://doi.org/10.1016/s0921-5093(01)01207-2

[8] AL-SAMMAN T, GOTTSTEIN G. Influence of strain path change on the rolling behavior of twin roll cast magnesium alloy [J]. Scripta Mater, 2008, 59(7): 760−763.

DOI: https://doi.org/10.1016/j.scriptamat.2008.06.023

[9] SINGH A K, SCHWARZER R A. Evolution of texture in pure magnesium during rolling [J]. Z Met Kd, 2005, 96(4): 345−351.

DOI: https://doi.org/10.3139/146.018119

[10] Chino Y, Lee J S, Sassa K, Kamiya A, Mabuchi M. Press formability of a rolled AZ31 Mg alloy sheet with controlled texture [J]. Materials letters, 2006, 60(2): 173-176.

DOI: https://doi.org/10.1016/j.matlet.2005.08.012

[11] CHEN Xing-pin, SHANG Du, XIAO Rui, HUANG Guang-jie, LIU Qing. Influence of rolling ways on microstructure and anisotropy of AZ31 alloy sheet [J]. Trans. Nonferrous Met. Soc. China, 2010, 20: 589-593.

DOI: https://doi.org/10.1016/s1003-6326(10)60544-4

[12] J.B. Leea, T.J. Konno, H.G. Jeong. Effect of differential speed rolling on the anisotropy of mechanical properties and texture evolution of AZ31 Mg alloys. Journal of Alloys and Compounds[J], 2010, 499(2): 273-277.

DOI: https://doi.org/10.1016/j.jallcom.2010.03.186

[13] Su-Hyeon Kim, Bong-Sun You, Chang Dong Yim, Young-Myoung Seo. Texture and microstructure changes in asymmetrically hot rolled AZ31 magnesium alloy sheets[J]. Materials Letters, 2005, 59(29-30): 3876-3880.

DOI: https://doi.org/10.1016/j.matlet.2005.07.024

[14] KIM S H. YOU B S. YIM C D. The effect of rolling conditions on the microstructure and texture evolution of AZ31 Mg alloy sheets [J]. Institute of Metals and Materials Australasia, 2005, 29: 530-535.

[15] Shujin Liang, Hongfei Sun, Zuyan Liu, ErdeWang. Mechanical properties and texture evolution during rolling process of an AZ31 Mg alloy [J]. Journal of Alloys and Compounds, 2009, 472 (1-2): 127–132.

DOI: https://doi.org/10.1016/j.jallcom.2008.04.093