Dynamic Mechanical Property Anisotropy of ZA31 Alloy by Equal Channel Angular Pressing

Abstract:

the microstuctures and orientations changing of hot extrusion AZ31 magnesium alloy were obtained by equal channel angular pressing (ECAP). After the ECAP samples annealed, the dynamic anistropy of AZ31 alloy in different impacting directions were given by dynamic compressing in HSPB system. The results showed that with pression passes increasing, the grains were refined more obviously and {0002}<11-20> texture component increased and concentrated in the center of the pole figure. The maxmium reduction under impacting direction (ID) parelleled to extrusion direction (ED) is larger than that of ID // ND during dynamic compressing, and there was a obvious strain softing in the strain-stress curves. However, the dramatic strain hardening and higher yield strength appeared in the stress-strain figure when ID parelleled to ND. In addition, the reasons for mechanical anistropy of AZ31 alloy were discussed in a way of grains orientationes changing.

• Periodical: Applied Mechanics and Materials (Volume 598)
• Pages: 102-105
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.598.102
• Online since: July 2014
• Authors: Gang Wan*, Bao Lin Wu
• Keywords: AZ31 Magnesium Alloy, Dynamic Anisotropy, Equal Channel Angular Pressing (ECAP), Microstructure, Texture

References

[1] Yoshinaga B H, Horiuchi R. Trans JIM, 1963, 4, p.1.

[2] J. Koike, Metallurgical and Materials Transaction A, 36A (2005), p.1689.

[3] Koike J, Kobayashi T, Watanabe H. Acta materialia, 2003, 51, p. (2055).

[4] TAN Cheng-wen, XU Shan-na, WANG Lu, et al, Trans. Nonferrous Met. Soc. China, 17(2007), p.41.

[5] Y.N. Wang, J.C. Huang, Acta Materialia, 55(2007), p.897.

[6] J. Jiang, A. Godfrey, W. Liu, Q. Liu, Materials Science and Engineering A, 483-484(2008), p.576.

[7] Matthew T Tucker, Mark F. Horstemeyer, Phillip M. Gullett, et al, Scripta materialia, 60(2009), p.182.

[8] E. El-Magd, M. Abouridouane, International Journal of Impact Engineering, 32 (2006), p.741.

[9] Wei Qian Song, Peter Beggs, Mark Easton, Materials and Design, 30 (2009), p.642.

[10] Su-Tang Chiou, Hsien-Lung Tsai, Woei-Shyan Lee, Journal of Materials Processing Technology, 209 (2009), p.2282.