Modifying Effect of Al-Ti-C-P Master Alloy on Hypereutectic Al-Si Alloy


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Al-Ti-C-P master alloy has been successfully fabricated by SHS-melting technology. Microstructures and phase constituent of Al-Ti-C-P master alloy were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM) and EDS. The results show that Al-Ti-C-P master alloy comprises TiAl3, TiC, AlP and α-Al matrix. After adding 2.0 wt% Al-Ti-C-P master alloy, microstructure and mechanical properties (after T6 treating) of ZL117 alloy has been improved dramatically: The average grain size of primary silicon decreases from 260 to 35 μm, edges and angles of primary silicon are passivated, the morphology of eutectic silicon changes from large needle-like one to fine rod-like or particle-like one, and the microstructures are noticeably refined; Room temperature tensile strength changes from 168 to 260 MPa while elevated temperature tensile strength (at 300) varies from 88 to 125 MPa. Impact toughness and macro-hardness(HB) increases to 17 J/cm2 and 97 from the original 6.5 J/cm2 and 92.



Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.




C. X. Xu et al., "Modifying Effect of Al-Ti-C-P Master Alloy on Hypereutectic Al-Si Alloy", Materials Science Forum, Vols. 546-549, pp. 947-952, 2007

Online since:

May 2007




[1] Z.Y. Jian, G.C. Yang and Y.H. Zhou: The Chinese Journal of Nonferrous Metals, 1995, vol. 5(4), pp.133-35.

[2] W.M. Mao, S.S. Li, A.M. Zhao, C.L. Cui and X.Y. Zhong: Materials Science & Technology, 2001, vol. 9(2), pp.117-21.

[3] C.X. Xu and J. S. Zhang: Journal of the Chinese Rare Earth Society, 2002, vol. 20(4), pp.331-33.

[4] X.F. Liu, J.G. Qiao, Z.Q. Wang, L.N. Yu, Y.F. Han and X. F. Bian: Rare Metal Materials and Engineering, 2004, vol. 33(9), pp.924-27.

[5] J.G. Qiao, G.H. Gao, Z.Y. Gao, X.J. Yi and X.F. Liu: Fitting Parts for Combustion Engine, 2004, (4), pp.19-21.

[6] S.H. Sun, J.T. Zhang, Z.G. Peng, K. Wang and G. Fan: Jounal of Kuming University of Science and Technology (Science and Technology), 2005, vol. 30(1), pp.22-24.

[7] Y.F. Han, X.F. Liu, Z.Q. Wang, and X.F. Bian: Fitting Parts for Combustion Engine, 2002, (2), pp.7-10.

[8] S.F. Yao, W.M. Mao, A.M. Zhao and X.Y. Zhong: Foundry, 2000, vol. 49(9), pp.512-15.

[9] G.H. Qi, X.F. Liu, Z.Q. Yang, Y.H. Liu and X.F. Bian: Materials Science & Technology, 2001, vol. 9(2), pp.211-14.

[10] J.G. Qiao, X.F. Liu, X.J. Liu, and X.F. Bian: Fitting Parts for Combustion Engine, 2003, (5), pp.18-22.

[11] W. Schneider: Light Metals, 1993: 815-20.

[12] T.Z. Shi and Y.W. Wang, in: Application Manual of Foundry, 1 st Ed., vol. 3, Northeast Engineering College Press, Shenyang, P.R. China (1988), p.54.

[13] A. Banerji and W. Reif: Metallurgical Transactions A, 1986, vol. 17A (12), pp.2127-37.

[14] I.G. Davis, J.M. Dennis and A. Hellawell: Metallurgical Transactions, 1970, vol. 1(1), pp.275-79.

[15] I. Maxwell and A. Hellawell: Metallurgical Transactions, 1972, vol. 3(6), pp.1487-92.

[16] Z.Q. Wang, X.F. Liu and X.F. Bian: Foundry, 2001, vol. 50(6), pp.316-20.

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