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HomeMaterials Science ForumMaterials Science Forum Vol. 913The Structural Evolution of Al-6Y-2P Master Alloy...

The Structural Evolution of Al-6Y-2P Master Alloy and its Influence on the Refinement of Mg₂Si Phase in Mg₂Si/Al Composites

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Abstract:

In this article, a novel Al–6Y–2P master alloy with YP particles was successfully synthesized. By means of the fracture surface observation, it was found that YP particles with an average size of 21.5 μm exhibit the cubic morphologies. With the addition of Al–6Y–2P master alloy, primary Mg₂Si particles in Al–Mg₂Si composites can be significantly refined to 21.2 μm and 20.3 μm after holding for 30 min and 120 min respectively. Meanwhile, the morphologies of eutectic Mg₂Si alter from a flake-like to fine fibrous shape. The reason for the excellent refining performance of this master alloy was discussed based on the chemical kinetics theory. During the solidification process, P atoms distribute homogeneously in the Al melt and precipitate in the form of AlP, providing heterogeneous nucleation sites for primary Mg₂Si.

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Periodical:

Materials Science Forum (Volume 913)

Pages:

490-497

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.913.490

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Online since:

February 2018

Authors:

Lu Yao Pan, Hua Qian Yu, Shan Jiang, Lu Yao Wang, Min Zuo*

Keywords:

Al-Mg₂Si Composite, Microstructure, Phosphorus, Structural Evolution

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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[1] Y.L. Liu, S.B. Kang, H.W. Kim, The complex microstructures in an as-cast Al–Mg–Si alloy, Mater. Lett. 41 (1999) 267–272.

DOI: 10.1016/s0167-577x(99)00141-x

[2] C. Li, X.F. Liu, Y.Y. Wu, Refinement and modification performance of Al–P master alloy on primary Mg2Si in Al–Mg–Si alloys, J. Alloys Compd. 465 (2008) 145–150.

DOI: 10.1016/j.jallcom.2007.10.111

[3] C.J. Song, Z.M. Xu, J.G. Li, Fabrication of in situ Al/Mg2Si functionally graded materials by electromagnetic separation method, Compos. Part A-Appl. S. 38 (2007) 427–433.

DOI: 10.1016/j.compositesa.2006.03.002

[4] C. Li, Y.P. Wu, H. Li, Y.Y. Wu, X.F. Liu, Effect of Ni on eutectic structural evolution in hypereutectic Al–Mg2Si cast alloys, J. Alloys Compd. 477 (2009) 212–216.

DOI: 10.1016/j.msea.2010.09.056

[5] L. Lu, M.O. Lai, M.L. Hoe, Formation of nanocrystalline Mg2Si and Mg2Si dispersion strengthened Mg–Al alloy by mechanical alloying, Nanostruct. Mater. 10 (1998) 551–563.

DOI: 10.1016/s0965-9773(98)00102-0

[6] J. Zhang, Z. Fan, Y.Q. Wang, B.L. Zhou, Effect of cooling rate on the microstructure of hypereutectic Al–Mg2Si alloy, J. Mater. Sci. Lett. 19 (2000) 1825–1828.

[7] M.F. Ourfali, I. Todd, H. Jones, Effect of solidification cooling rate on the morphology and number per unit volume of primary Mg2Si particles in a hypereutectic Al–Mg–Si alloy, Metall. Mater. Trans. A 36 (2005) 1368–1372.

DOI: 10.1007/s11661-005-0228-7

[8] A. Malekan, M. Emamy, J. Rassizadehghani, A.R. Emami, The effect of solution temperature on the microstructure an tensile properties of Al-15%Mg2Si composite, Mater. Des. 32 (2011) 2701–2709.

DOI: 10.1016/j.matdes.2011.01.020

[9] Y.G. Zhao, Q.D. Qin, Y.H. Liang, W. Zhou, Q.C. Jiang, In-situ Mg2Si/Al–Si–Cu composite modified by strontium, J. Mater. Sci. 40 (2005) 1831–1833.

DOI: 10.1007/s10853-005-0705-9

[10] J. Zhang, Z. Fan, Y. Wang, B. Zhou, Microstructural refinement in Al–Mg2Si in situ composites, J. Mater. Sci. Lett. 18 (1999) 783–784.

[11] Y.G. Zhao, Q.D. Qin, Y.Q. Zhao, Y.H. Liang, Q.C. Jiang, In situ Mg2Si/Al–Si composite modified by K2TiF6, Mater. Lett. 58 (2004) 2192–2194.

DOI: 10.1016/j.matlet.2004.01.016

[12] Q.D. Qin, Y.G. Zhao, W. Zhou, P.J. Cong, Effect of phosphorus on microstructure an growth manner of primary Mg2Si crystal in Mg2Si/Al composite, Mater. Sci. Eng. A 447 (2007) 186–191.

DOI: 10.1016/j.msea.2006.10.076

[13] R. Hadian, M. Emamy, N. Varahram. N. Nemati, The effect of Li on the tensile properties of cast Al–Mg2Si metal matrix composite, Mater. Sci. Eng. A 490 (2008) 250–257.

DOI: 10.1016/j.msea.2008.01.039

[14] Q.C. Jiang, H.Y. Wang, Y. Wang, B.X. Ma, J.G. Wang, Modification of Mg2Si in Mg–Si alloys with yttrium, Mater. Sci. Eng. A 392 (2005) 130–135.

DOI: 10.1016/j.msea.2004.09.007

[15] F.C. Robles Hernandez, J.H. Sokolowski, Comparison among chemical and electromagnetic stirring and vibration melt treatment for Al–Si hypereutectic alloys, J. Alloys Compd. 426 (2006) 205–212.

DOI: 10.1016/j.jallcom.2006.09.039

[16] W.J. Kyffin, W.M. Rainforth, H. Jones, Effect of phosphorus additions on the spacing between primary silicon particles in a Bridgman solidified hypereutectic Al–Si alloy, J. Mater. Sci. 36 (2001) 2667–2672.

[17] M. Zuo, X.F. Liu, Q.Q. Sun, K. Jiang, Effect of rapid solidification on the microstructure and refining performance of an Al–Si–P master alloy, J. Mater. Process. Technol. 209 (2009) 5504–5508.

DOI: 10.1016/j.jmatprotec.2009.05.005

[18] M. Zuo, K. Jiang, X.F. Liu, Refinement of hypereutectic Al–Si alloy by a new Al–Zr–P master alloy, J. Alloys Compd. 503 (2010) L26–L30.

DOI: 10.1016/j.jallcom.2010.05.017

[19] J.Y. Chang, G.H. Kim, I.G. Moon, C.S. Choi, Rare earth concentration in the primary Si crystal in rare earth added Al-21wt. %Si alloy, Scripta Mater. 39 (1998) 307–314.

DOI: 10.1016/s1359-6462(98)00168-7

[20] M. Ravi, U.T.S. Pillai, B.C. Pai, A.D. Damodaran, E.S. Dwarakadasa, A study of the influence of mischmetal additions to Al–7Si–0. 3Mg alloy, Metall. Trans. A27 (1996) 1283–1292.

DOI: 10.1007/bf02649865

[21] M. Zuo, D.G. Zhao, Z.Q. Wang, H.R. Geng, Complex modification of hypereutectic Al–Si alloy by a new Al–Y–P master alloy, Met. Mater. Int. 21 (2015) 646–651.

DOI: 10.1007/s12540-015-4535-2

[22] H. Kitazawa, K. Hashi, S. Eguchi, T. Shimizu, NMR study of YP and YPO4 as 2-qubits quantum computers, Superlattice. Microst. 32 (2002) 317–322.

DOI: 10.1016/s0749-6036(03)00035-1

[23] B. Amrani, F. El Haj Hassan, Theoretical study of Ⅲ–V yttrium compounds, Comput. Mater. Sci. 39 (2007) 563–568.

DOI: 10.1016/j.commatsci.2006.08.009

[24] F. Soyalp, S. U ur, Structural, electronic and phonon properties' investigation of YP and YAs compounds, J. Phys. Chem. Solids. 69 (2008) 791–798.

DOI: 10.1016/j.jpcs.2007.11.013

[25] M. Emamy, H.R. Jafari Nodooshan, A. Malekan, The microstructure, hardness and tensile properties of Al–15%Mg2Si in situ composite with yttrium addition, Mater. Des. 32 (2011) 4559–4566.

DOI: 10.1016/j.matdes.2011.04.026

[26] C. Li, Y.Y. Wu, H. Li, X.F. Liu, Morphological evolution and growth mechanism of primary Mg2Si phase in Al–Mg2Si alloys, Acta Mater. 59 (2011) 1058–1067.

DOI: 10.1016/j.actamat.2010.10.036