Effects of Al-Sr Master Alloys on the As-Cast Microstructure of the AZ31 Magnesium Alloys

Abstract:

Article Preview

The influence of Al-10.5%Sr master alloy, which is much cheaper than Mg-Sr master alloys, on the as-cast microstructure of the AZ31 alloy was investigated. The research results revealed that the Al-10.5%Sr master alloy produced obvious modification of the as-cast microstructure of the AZ31 alloy, and the modification efficiency increased with the holding time from 0min to 60min and the amount of Sr from 0.01% to 0.1%. Moreover, the results also showed that the Al-10.5%Sr master alloys of different states had different modification efficiency on the as-cast microstructure of the AZ31 alloy. The Al-10.5%Sr master alloys in extrusion deformation state and rapid solidification state had better modification efficiency than the Al-10.5%Sr master alloys received and in heat treatment state, which could be related to the microstructure of the Al-10.5%Sr master alloys with different states.

Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.

Pages:

183-186

Citation:

R. J. Cheng et al., "Effects of Al-Sr Master Alloys on the As-Cast Microstructure of the AZ31 Magnesium Alloys", Materials Science Forum, Vols. 546-549, pp. 183-186, 2007

Online since:

May 2007

Export:

Price:

$38.00

[1] Kinji Hirai, Hidetoshi Somekaw and Yorinobu Takigaw: Materials Science and Engineering A. Vol. 403 (2005), p.276.

[2] Y. Kojima: Mater Trans: Vol. 42 (2001), p.1154.

[3] S. Lee, S.H. Lee and D.H. Kim: Metallurgical and Materials Trans A. Vol. 29A (1998), p.1221.

[4] Y.C. Lee, A.K. Dahle and D.H. Sbjohn: Metallurgical and Materials Trans. A. Vol. 31A (2000), p.2895.

[5] Yu Zhong, C. Wolverton and Y. Austin Chang: Acta Materialia. Vol. 52 (2004), p.2739.

[6] Bin Tang, Shuang-Shou Li and Xi-Shu Wang�Scripta Materialia. Vol. 53. (2005), p.1077.

[7] E. Baril, P. Labelle, M.O. Pekguleryuz and Jom-J Min: Met Mater. Sci. Vol. 55. (2003), p. A34.

[8] Manas Dash and Makhlouf Makhlouf: Journal of Light Metals. Vol. 1 (2001), p.251.

[9] X.Q. Zeng, Y.X. Wang and W.J. Ding: Metallurgical and Materials Transactions A. Vol. 37 (2006), pp.1073-5623.

[10] K. Venkateswarlu, B.S. Murty and M. Chakraborty: Materials Science and Engineering A. Vol. 301A (2001), p.180. a 100µm c 100µm b 100µm c b a e 500µ m 50µm f 500µ m 50µm d 100µm d e f.