Effect of Si on As-Cast Microstructure in Quasicrystalline Al-Cu -Fe Alloy


Article Preview

Effect of Si on the forming ability of quasicrystalline phase in Al65Cu20Fe15 alloys fabricated under conventional casting conditions has been studied using X-ray diffraction (XRD), optical microscopy (OM), and scanning electron microscopy (SEM). The results show that under the conventional casting conditions, it is found that the addition of certain amount of Si into the Al-Cu-Fe melts can change the formation of Al62.5Cu25Fe12.5 quasicrystals during the solidification process. Compared with Al65Cu20Fe15 alloy, Al64.5Cu20Fe15Si0.5 alloy has smaller volume fraction of β phase solidifying initially, larger volume fraction of the quasicrystal phase generating in the subsequent peritectic reaction, and larger volume fraction of ω phase solidifying finally. Both experimental results and the theory of Hume-Rothery show that addition of Si can promote the formation ability of the icosahedral quasicrystalline Al62.5Cu25Fe12.5 phase in Al-Cu-Fe alloy.



Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.




J. S. Zhang et al., "Effect of Si on As-Cast Microstructure in Quasicrystalline Al-Cu -Fe Alloy", Materials Science Forum, Vols. 546-549, pp. 619-622, 2007

Online since:

May 2007




[1] LI Zhi-qiang, XU Zhou, LI Xiao-ping, WANG Shuo, Materials Review, 2002, 16(2): 9-11.

[2] TSAI A P, AKIHISA I, TSUYOSHI M, Journal of Materials Science letters, 1987, 6(12): 1403-1405.

[3] ELINA H S, Journal of Alloys and Compounds, 2004, 363(1-2): 150-174.

[4] MURTY B S, BARUA P, SRINIVAS V, SCHURACK F, ECKERT J, J. Non-crystal. Solids, 2004, 334-335: 44-47.

DOI: 10.1016/j.jnoncrysol.2003.11.010

[5] CHANG H J, FLEURY E, SONG G S, KIM WT, KIM D H, J. Non-Crystal. Solids, 2004, 334-335: 12-16.

[6] SONG G S, LEE M H, KIM WT, KIM D H., J. Non-Crystal. Solids, 2002, 297(2-3): 254-262.

[7] LEE S M, KIM B H, KIM S H, FLEURY E, KIM W T, KIM D H., Materials Science and Engineering, 2000, 294-296: 93-98.

[8] MUKHOPADHYAY N K, KURUP V, SRIVASTAVA V C, JOSHI P B, MANDAL R K., J. Non-Crystal. Solids 2004, 334&335: 52-56.

[9] ELINA H S, TUOMO T, Materials Chemistry and Physics 2004, 85(2-3): 383-395.

[10] ROUXEL D., GIL-GAVATZ M., PIGEAT P, WEBER B, J. Non-Crystal. Solids, 2005, 351(10-11): 802-809.

DOI: 10.1016/j.jnoncrysol.2005.02.013

[11] CHEUNG Y L, CHAN K C, ZHU Y H., Materials Characterization 2001, 47(3-4): 299-305.

[12] ZHAO Dong-shan, QU Wen-bang, WANG Ren-hui , SHEN Ning-fu, Shi Guang-xin, GUI Jia-nian, Acta Metallurgica Sinica , 2004�40 (1): 14-19.

[13] ZHAO Dong-shan, GUO Xin-yong, SHEN Ning-fu, GUO Jian, REN Chen-xing, The Chinese Journal of Nonferrous Metals. 2004, 14 (5): 786-790.

[14] DONG Chuang, Scripta Metallweica et Materialia, 1995, 33(2): 239-243.

[15] DONG Chuang, Chinese Journal of Materials Research, 1994, 8(6): 481-490.

Fetching data from Crossref.
This may take some time to load.