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The Effects of Grain Size on Ductility of AZ31 Magnesium Alloy

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Abstract:

It is well known that the ductility of magnesium and magnesium alloy is too poor to be processed. After normal hot extrusion, the ductility of magnesium alloy will be improved, but not noticeably. In this paper, further extrusion (Extrusion Ratio is 6.25) is adopted to commercial AZ31 magnesium alloy rods (Extrusion Ratio is 2) at different temperatures in order to refine the size of grain, then the rods with the crystallite size between 4-10μm is obtained, and the influence of crystallite with different grain size on the ductility of this alloy is investigated further. A lot of experiments and research indicate that: the elongation of the initial billet with the grain size of 30μ m can reach about 12%; after extrusion at different temperatures, the grain size can be refined to below 10μm, and the ductility goes up to 24%-30%. It also shows that, when the grain size of AZ31 magnesium alloy is below 10μm, the ductility is effected obviously. Only when the grain size is about a few microns, the ductility of AZ31 magnesium alloy will be improved noticeably.

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Periodical:

Materials Science Forum (Volumes 488-489)

Pages:

535-538

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.488-489.535

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Online since:

July 2005

Authors:

X.L. Wang, Yong Ning Yu, Erde Wang

Keywords:

AZ31 Magnesium Alloy, Ductility, Extrusion, Grain Size

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] B.L. Mordike,T. ebert：Material Science and Engineering, A302(2001), p.37.

Google Scholar

[2] YU Kun, LI Wen-xian, WANG Ri-chu , MA Zhang-qing: The Chinese Journal of Nonferrous Metals: 13(2) (2003), p.277.

Google Scholar

[3] CahnR W, Shi Chang-xu, KE Jun: Beijing: Science Press, (1999), p.101.

Google Scholar

[4] Kojima Y: Mater. Sci. Forum Vol. 350-351 ( 2000), p.3.

Google Scholar

[5] Froes F H., Eliezer D, Aghion E: JOM 1998(9), p.30.

Google Scholar

[6] Tsutomu Murai, Shin-ichi Matsuoka, Susuma Miyamoto, Yoshinari Oki: Journal of Materials Processing Technology Vol. 141 (2003), p.207.

Google Scholar

[7] Toshiji Mudai, Masashi Yamanoi, Hiroyuki Watanabe, and Kenji Higashi: Scripta Materialia Vol. 45 (2001), p.89.

Google Scholar

[8] Margam chandrasekaran, Yong Ming Shyan John: Materials science and Engineering, Vol. 381 (2004), p.308.

Google Scholar

[9] Tien-Chan Chang, Jian-Yi Wang, Chia-Ming O, Shyong Lee: Journal of Materials Processing Technology, 140(2003).

Google Scholar