Effects of Samarium on Microstructure and Mechanical Properties of Mg-Al-Ca Alloys

Abstract:

Article Preview

As samarium addition was increased, α- Mg matrix morphology was changed from dendritic to equiaxed grains and average value of grain size was decreased from 101.6㎛ to 39.3㎛. Samarium addition to Mg-5Al-3Ca based alloys resulted in the formation of Mg-Al-Sm thernary intermetallic compounds at grain boundarys and α-Mg matrix grains. In these alloys, two kinds of eutectic structure were observed; coarse irregular-shape structure at grain boundary and fine needle-shape structure in the α-Mg matrix grain. It is found that the yield strength and ultimate strength showed the maximum value of 109.1MPa and 139.3 at Mg-5Al-3Ca-2Sm alloy, respectively.

Info:

Periodical:

Materials Science Forum (Volumes 544-545)

Edited by:

Hyungsun Kim, Junichi Hojo and Soo Wohn Lee

Pages:

295-298

Citation:

H. T. Son et al., "Effects of Samarium on Microstructure and Mechanical Properties of Mg-Al-Ca Alloys ", Materials Science Forum, Vols. 544-545, pp. 295-298, 2007

Online since:

May 2007

Export:

Price:

$38.00

[1] Terada Y, Ishimatsu N, Sato R, Sato T, Ohori K, Mater. Sci. Forum(2003) p.419.

[2] A. A. Luo: International Materials Reviews, Vol. 49, No. 1 (2003) p.13.

[3] Bai Jing, Sun Yangsan, Xun Shan, Xue Feng, Zhu Tianbai : Mater. Sci. and Eng. A 419 (2006) P. 181.

[4] A. Suzuki, N. D. Saddock, J.W. Jones, T.M. Pollock : Scripta Materialia 51 (2004) P. 1005.

[5] A. Suzuki, N. D. Saddock, J.W. Jones, T.M. Pollock : Acta Materialia 53 (2005) P. 2823.

[6] I.P. Moreno, T.K. Nandy, J.W. Jones, J.E. Allison, T.M. Pollock : Scripta Materialia 48 (2003) P. 1029.

[7] O. Pekguleryuz and A. Arslan Kaya: Advanced Engineering Materials, 5, No. 12 (2003) p.866.