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Journal articles on the topic 'Al-sn and Al-Si hypoeutectic alloys'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Ho, C. R., and B. Cantor. "Modification of hypoeutectic Al-Si alloys." Journal of Materials Science 30, no. 8 (1995): 1912–20. http://dx.doi.org/10.1007/bf00353013.

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2

Çadırlı, E., H. Kaya, A. Gümüş, and I. Yılmazer. "Temperature-Dependence of Electrical Resistivity of Cd-Sn, Bi-Sn, and Al-Si Eutectic and Al-3wt.%Si Hypoeutectic Alloys." Journal of Materials Engineering and Performance 15, no. 4 (2006): 490–93. http://dx.doi.org/10.1361/105994906x124578.

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3

Dybowski, Bartłomiej, Łukasz Poloczek, and Andrzej Kiełbus. "The Porosity Description in Hypoeutectic Al-Si Alloys." Key Engineering Materials 682 (February 2016): 83–90. http://dx.doi.org/10.4028/www.scientific.net/kem.682.83.

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Al-Si alloys are the most important group among aluminum casting alloys. They are widely used in automotive and aerospace industries. Chemical modification of the Al-Si alloys leads to formation of fine, fibrous Al-Si eutectic mixture ensuring high mechanical properties. The modification is however known to increase the alloy porosity, which may, in turn, result in decrease of its properties. The following paper presents results of the research on quantitative description of the Al-Si cast alloys porosity and influence of Na modification on the porosity of AlSi9Mg alloy. Porosity in the hypoeu

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4

Nafisi, S., R. Ghomashchi, and H. Vali. "Eutectic nucleation in hypoeutectic Al-Si alloys." Materials Characterization 59, no. 10 (2008): 1466–73. http://dx.doi.org/10.1016/j.matchar.2008.01.014.

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5

Mohanty, P. S., and J. E. Gruzleski. "Grain refinement mechanisms of hypoeutectic AlSi alloys." Acta Materialia 44, no. 9 (1996): 3749–60. http://dx.doi.org/10.1016/1359-6454(96)00021-3.

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6

Prukkanon, Wattanachai, Nakorn Srisukhumbowornchai, and Chaowalit Limmaneevichitr. "Modification of hypoeutectic Al–Si alloys with scandium." Journal of Alloys and Compounds 477, no. 1-2 (2009): 454–60. http://dx.doi.org/10.1016/j.jallcom.2008.10.016.

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7

LIU, Yuan, Chao DING, and Yan-xiang LI. "Grain refining mechanism of Al-3B master alloy on hypoeutectic Al-Si alloys." Transactions of Nonferrous Metals Society of China 21, no. 7 (2011): 1435–40. http://dx.doi.org/10.1016/s1003-6326(11)60878-9.

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8

Jia, Ting Ting, Guo Shi Chen, Shuo Zhang, Ming Wu, and Hao Ran Geng. "Research on High Strength Hypoeutectic Al-Si Alloy." Advanced Materials Research 873 (December 2013): 10–18. http://dx.doi.org/10.4028/www.scientific.net/amr.873.10.

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In this study, hypoeutectic Al-Si casting alloy was investigated to obtain high strength, according to alloying of Cu Mg, refining of Al-5Ti-B master alloy, modifing of Re and T6 heat treatment. The experimental results show that the mechanical properties of the tested alloy reach peak when addition of Al-5Ti-1B alloy is 1.0% after heat treatment, especially the yield strength, correspondingly, microstructure distribution gets to the best state. When Al-5Ti-1B exceeds 1.0%, the mechanical properties descend gradually. The metallic compounds of Mg2Si phase, CuA12 phase and W phase precipitated

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9

Dinnis, C. M., J. A. Taylor, and A. K. Dahle. "Interactions between iron, manganese, and the Al-Si eutectic in hypoeutectic Al-Si alloys." Metallurgical and Materials Transactions A 37, no. 11 (2006): 3283–91. http://dx.doi.org/10.1007/bf02586163.

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10

Vicario, I., and M. B. Djurdjevic. "Description of hypoeutectic Al-Si-Cu alloys based on their known chemical compositions." Revista de Metalurgia 49, no. 5 (2013): 340–50. http://dx.doi.org/10.3989/revmetalm.1238.

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11

Chen, Zongning, Huijun Kang, Guohua Fan, et al. "Grain refinement of hypoeutectic Al-Si alloys with B." Acta Materialia 120 (November 2016): 168–78. http://dx.doi.org/10.1016/j.actamat.2016.08.045.

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12

Anasyida, A. S., Zuhailawati Hussain, Abdul Razak Daud, and M. J. Ghazali. "Characterisation of Phases and Lattice Parameter in Eutectic and Hypoeutectic Al-Si-Mg-Ce Cast Alloy." Advanced Materials Research 620 (December 2012): 50–54. http://dx.doi.org/10.4028/www.scientific.net/amr.620.50.

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The purpose of this work is to understand the phases formation and lattice parameter changes with addition 0.6 to 2.7 wt.% in Al-Si-Mg-Ce cast alloy. Al-Si-Mg-Ce eutectic and hypoeutectic cast alloy were prepared by conventional casting technique. The alloys were investigated by using optical microscope, Scanning electron microscope (SEM) and X-Ray diffractometry (XRD). The addition of Ce resulted in precipitation of Al4Ce in eutectic cast alloy and CeMg2Si2 in hypoeutectic cast alloy. The lattice parameter of Al increases with increase in Ce content wheareas lattice parameter of Si phase decr

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13

Hu, Xiao Shi, Kun Wu, and Ming Yi Zheng. "Low Frequency Damping Behaviors of Magnesium Alloys." Advanced Materials Research 15-17 (February 2006): 479–84. http://dx.doi.org/10.4028/www.scientific.net/amr.15-17.479.

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The effect of different alloying elements including Ni, Si and Al and various mass contents of these elements on the low frequency damping behaviors of magnesium alloys were investigated. The measurements of strain dependent and temperature dependent damping capacities of these magnesium alloys were carried out using dynamic mechanical analyzer (DMA), and the very different damping behaviors of these magnesium alloys were found. The hypoeutectic magnesium alloys with low solubility alloying elements such as Si and Ni shown extremely high damping capacities. But the Mg-Al alloys exhibited very

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14

Wang, Jun, Shuxian He, Baode Sun, Ke Li, Da Shu, and Yaohe Zhou. "Effects of melt thermal treatment on hypoeutectic Al–Si alloys." Materials Science and Engineering: A 338, no. 1-2 (2002): 101–7. http://dx.doi.org/10.1016/s0921-5093(02)00067-9.

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15

Li, Yang, Bin Hu, Qinfen Gu, Bin Liu, and Qian Li. "Achievement in grain-refining hypoeutectic Al-Si alloys with Nb." Scripta Materialia 160 (February 2019): 75–80. http://dx.doi.org/10.1016/j.scriptamat.2018.09.037.

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16

Tantiwaitayaphan, Tanawat, Phromphong Pandee, and Chaowalit Limmaneevichitr. "Modification of Eutectic Si in Hypoeutectic Al-Si Alloys with Erbium Addition." Key Engineering Materials 718 (November 2016): 139–42. http://dx.doi.org/10.4028/www.scientific.net/kem.718.139.

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Effect of erbium (Er) on the eutectic Si morphologies in hypoeutectic Al-Si based alloys was investigated using thermal analysis and microstructure examination. The microstructural observations show that the addition of Er causes significant modification of the eutectic silicon morphology from a coarse plate-like to a fine fibrous one. Furthermore, the results of thermal analysis reveal that the addition of Er decreased the temperatures of eutectic nucleation and growth, and increased the eutectic undercooling. The eutectic undercooling caused by the presence of Er plays an important role in t

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17

Zhang, Peirong, Zhanqiang Liu, Jin Du, Guosheng Su, Jingjie Zhang, and Yujing Sun. "Correlation between the microstructure and machinability in machining Al–(5–25) wt% Si alloys." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 234, no. 9 (2020): 1173–84. http://dx.doi.org/10.1177/0954405420911275.

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The machinability of the Al–Si alloys becomes worse with the Si content increasing. This article explored the influence of Si content on the machinability including cutting forces and chip breakability in machining the Al–Si alloys. The change in machinability of the Al–Si alloys with different Si content attributes to the evolution of microstructure. The cutting forces when cutting hypoeutectic Al–Si alloys are higher than the hypereutectic alloys because only Mg2Si ( β-phase) precipitations are formed in the former one versus cooperative precipitation of Al2Cu ( θ-phase) and Mg2Si in the lat

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18

Rossi, P., M. Engstler, and F. Mücklich. "Quantitative Classification and Assessment of Sr Modification in Hypoeutectic Al-Si and Al-Si-Mg Alloys." Practical Metallography 52, no. 10 (2015): 571–89. http://dx.doi.org/10.3139/147.110361.

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19

Liang, Song-Mao, та Rainer Schmid-Fetzer. "Nucleants of Eutectic Silicon in Al-Si Hypoeutectic Alloys: β-(Al, Fe, Si) or AlP Phase". Metallurgical and Materials Transactions A 45, № 12 (2014): 5308–12. http://dx.doi.org/10.1007/s11661-014-2522-8.

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20

Ichikawa, Kiyoshi, Satoshi Ishizuka, and Yoshiji Kinoshita. "Modification of Hypoeutectic Al–Cu, Al–Si and Al–Ni Alloys by Rheocasting." Transactions of the Japan Institute of Metals 29, no. 7 (1988): 598–607. http://dx.doi.org/10.2320/matertrans1960.29.598.

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21

Szymczak, Tomasz, Grzegorz Gumienny, Leszek Klimek, Marcin Goły, Jan Szymszal, and Tadeusz Pacyniak. "Characteristics of Al-Si Alloys with High Melting Point Elements for High Pressure Die Casting." Materials 13, no. 21 (2020): 4861. http://dx.doi.org/10.3390/ma13214861.

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This paper is devoted to the possibility of increasing the mechanical properties (tensile strength, yield strength, elongation and hardness) of high pressure die casting (HPDC) hypoeutectic Al-Si alloys by high melting point elements: chromium, molybdenum, vanadium and tungsten. EN AC-46000 alloy was used as a base alloy. The paper presents the effect of Cr, Mo, V and W on the crystallization process and the microstructure of HPDC aluminum alloy as well as an alloy from the shell mold. Thermal and derivative analysis was used to study the crystallization process. The possibility of increasing

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22

Ban, Chun Yan, Yi Han, Qi Xian Ba, and Jian Zhong Cui. "Influence of Pulse Electric Current on Solidification Structures of Al-Si Alloys." Materials Science Forum 546-549 (May 2007): 723–28. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.723.

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The effect of pulse electric current with different density on solidification structures of hypoeutectic Al-7%Si, Al-10%Si and hypereutectic Al-22%Si alloys was studied. The shape and distribution of α-Al and Si were analysed.The experimental results showed that α- Al of Al-7% Si alloy is shortened when applied a pulse electric current during the solidification, and the microstructure turns from the obvious columnar crystal into rosette. After treatment with pulse electric current, the primary Si of Al-22%Si alloy was refined obviously. When the discharge voltage was 3kV, Si tended to gather a

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23

Joy-Yii, S. L., and Denni Kurniawan. "Effect of Rare Earth Addition on Microstructure and Mechanical Properties of Al-Si Alloys: An Overview." Advanced Materials Research 845 (December 2013): 27–30. http://dx.doi.org/10.4028/www.scientific.net/amr.845.27.

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This paper reviews the effect of rare earth addition on aluminium-silicon (Al-Si) alloys of hypoeutectic, eutectic, and hypereutectic types. The effects of rare earth on metallurgy, tensile strength, tensile fracture surface and wear behaviour of Al-Si alloys are highlighted and discussed in this paper. It was concluded that adding rare earth element to Al-Si alloys reduces the grain size of primary Si, increases the tensile strength and decreases the friction coefficient decreases. These indicate enhanced mechanical properties for rare earth modified Al-Si alloys are likely.

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24

Aida, Samsudin Fitri, Mirsad Nur Hijrah, Amirah Ahmad Hamdi, Hussain Zuhailawati, and Abu Seman Anasyida. "Fabrication and characterization of hypoeutectic open-cell Al-Si foams using gravity die casting and squeeze casting." Metallurgical Research & Technology 115, no. 5 (2018): 509. http://dx.doi.org/10.1051/metal/2018085.

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Gravity die casting and squeeze casting are the techniques used for the fabrication of hypoeutectic open-cell Al-Si foams which are characterized and studied for their energy absorbing quality in compression tests. The effect of different amounts of sodium chloride (NaCl) (up to 56 vol.%) as a space holder in the casting of aluminum foam on the morphology, density, porosity, compressive and energy absorption properties of aluminum foam was studied. The hypoeutectic Al-Si alloy with NaCl particles as a space holder was used to fabricate the aluminum foam using gravity die casting and squeeze ca

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25

Szymczak, T., G. Gumienny, I. Stasiak, and T. Pacyniak. "Hypoeutectic Al-Si Alloy with Cr, V and Mo to Pressure Die Casting." Archives of Foundry Engineering 17, no. 1 (2017): 153–56. http://dx.doi.org/10.1515/afe-2017-0028.

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Abstract This paper presents the results of hypoeutectic 226 grade alloy as well as prepared on its basis Al-Si alloy containing Cr, V and Mo. The additives tested were added as AlCr15, AlV10 and AlMo8 master alloys. Alloys tested were poured into DTA sampler as well as using pressure die casting. An amount of Cr, V and Mo additives in alloy poured into DTA sampler comprised within the range approximately 0.05-0.35%. Alloys to pressure die casting contained 0.05-0.20% Cr, V and Mo. The crystallization process was examined using the derivative thermal analysis (DTA). The microstructure of casti

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26

Lipiński, Tomasz, and Paweł Szabracki. "Mechanical Properties of AlSi9Mg Alloy with a Sodium Modifier." Solid State Phenomena 223 (November 2014): 78–86. http://dx.doi.org/10.4028/www.scientific.net/ssp.223.78.

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Al–Si alloys are among the most popular casting metals. Two-component aluminium alloys with silicon are not suitable for direct use after melting. Subject to their silicon content, Al Si alloys have a coarse-grained eutectic phase, and alloys with more than 13% Si content also feature large crystallites or β-phase needles. The β-phase is hard, but also fragile. Large crystallites are good planes of division, and they reduce the mechanical properties of alloys.In this study, the Al-9% Si alloy was refined with a sodium modifier. The modifier was added to the mould by the in-mould method. The mo

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27

KATO, Eiji, Hiroyuki NOMURA, and Naoto OSHIRO. "Effect of phosphorus on solidified structure of hypoeutectic Al-Si alloys." Journal of Japan Institute of Light Metals 47, no. 12 (1997): 667–71. http://dx.doi.org/10.2464/jilm.47.667.

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28

Huiyuan, Geng, Li Yanxiang, Chen Xiang, and Wang Xue. "Effects of boron on eutectic solidification in hypoeutectic Al–Si alloys." Scripta Materialia 53, no. 1 (2005): 69–73. http://dx.doi.org/10.1016/j.scriptamat.2005.03.011.

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29

Seensattayawong, Phanuphak, Phromphong Pandee, and Chaowalit Limmaneevichitr. "Impression creep properties of hypoeutectic Al-Si alloys with scandium additions." Materials Today: Proceedings 5, no. 3 (2018): 9440–46. http://dx.doi.org/10.1016/j.matpr.2017.10.122.

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30

WANG, Shou-ren, Ru MA, Ying-zi WANG, Yong WANG, and Li-ying YANG. "Growth mechanism of primary silicon in cast hypoeutectic Al-Si alloys." Transactions of Nonferrous Metals Society of China 22, no. 6 (2012): 1264–69. http://dx.doi.org/10.1016/s1003-6326(11)61314-9.

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31

Ojha, K. V., Aruna Tomar, Devendra Singh, and G. C. Kaushal. "Shape, microstructure and wear of spray formed hypoeutectic Al–Si alloys." Materials Science and Engineering: A 487, no. 1-2 (2008): 591–96. http://dx.doi.org/10.1016/j.msea.2007.10.032.

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32

Dinnis, Cameron M., Arne K. Dahle, and John A. Taylor. "Three-dimensional analysis of eutectic grains in hypoeutectic Al–Si alloys." Materials Science and Engineering: A 392, no. 1-2 (2005): 440–48. http://dx.doi.org/10.1016/j.msea.2004.10.037.

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33

Lu, L., K. Nogita, and A. K. Dahle. "Combining Sr and Na additions in hypoeutectic Al–Si foundry alloys." Materials Science and Engineering: A 399, no. 1-2 (2005): 244–53. http://dx.doi.org/10.1016/j.msea.2005.03.091.

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34

Nogita, K., and A. K. Dahle. "Effects of boron on eutectic modification of hypoeutectic Al–Si alloys." Scripta Materialia 48, no. 3 (2003): 307–13. http://dx.doi.org/10.1016/s1359-6462(02)00381-0.

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35

Nogita, K., and A. K. Dahle. "Eutectic solidification in hypoeutectic Al–Si alloys: electron backscatter diffraction analysis." Materials Characterization 46, no. 4 (2001): 305–10. http://dx.doi.org/10.1016/s1044-5803(00)00109-1.

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36

Djurdjevic, Mile. "Thermal description of hypoeutectic Al-Si-Cu alloys using silicon equivalency." Vojnotehnicki glasnik 60, no. 1 (2012): 152–68. http://dx.doi.org/10.5937/vojtehg1201152d.

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37

Abu Seman, Anasyida, Abdul Razak Daud, and Mariyam Jameelah Ghazali. "Wear behaviour of eutectic and hypoeutectic Al‐Si‐Mg‐Ce alloys." Industrial Lubrication and Tribology 65, no. 2 (2013): 135–40. http://dx.doi.org/10.1108/00368791311303500.

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38

Myers, Derrick. "Breaking Up Coral-Like Eutectic Silicon in Hypoeutectic Al-Si Alloys." International Journal of Metalcasting 8, no. 1 (2014): 61–62. http://dx.doi.org/10.1007/bf03355574.

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39

Xu, Jun, Si Rong Yu, En Yang Liu, Hai Yan Wang, and Shan Bao Zhang. "Variation Law Analysis of the Latent Heat of Al-Si Alloys." Materials Science Forum 787 (April 2014): 6–10. http://dx.doi.org/10.4028/www.scientific.net/msf.787.6.

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Currently, Al-Si alloy is one of the most widely studied aluminum alloy for the phase change thermal storage materials which can be used in solar thermal power generation. However, there still exist some problems to be solved on Al-Si alloy in the present researches. For instance, the latent heat of Al-20%Si alloy is lower than that of Al-12%Si alloy in some papers while the an opposite conclusion was draw in other papers. To solve this problem, five kinds of Al-Si alloy were designed in this investigation, and the mass fraction of silicon was 4%, 8%, 12%, 16% and 20% respectively. The latent

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40

Kotadia, H. R., N. Hari Babu, H. Zhang, S. Arumuganathar, and Z. Fan. "Solidification Behavior of Intensively Sheared Hypoeutectic Al-Si Alloy Liquid." Metallurgical and Materials Transactions A 42, no. 4 (2010): 1117–26. http://dx.doi.org/10.1007/s11661-010-0516-8.

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41

Chen, Kang I., Shou Chang Cheng, and Chin Hsiang Cheng. "The Effects of Small Additions Ga and Al on the Microstructure and Tensile Properties of Sn-Zn Based Lead-Free Solders." Advanced Materials Research 800 (September 2013): 265–70. http://dx.doi.org/10.4028/www.scientific.net/amr.800.265.

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The melting temperature, microstructures, and mechanical properties of the Sn-Zn-0.5Ag-0.5Ga, Sn-Zn-0.5Ag-0.45Al and Sn-Zn-0.5Ga-0.45Al lead-free solders were investigated. The results indicate that the addition of 0.5 wt% Ag to the Sn-Zn based alloys destroy the eutectic structure and results in the formation of Ag-Zn compound and hypoeutectic structure. The variation in the microstructure lowers the UTS. By the addition of Al the UTS and elongation of the 0.5Ag-0.45Al alloy can be decreased due to the Al diffused to the interface of the Ag-Zn compound/Sn-Zn eutectic structure to form Al-Zn c

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42

Prema, Satya, G. Y. Shreeshail, and T. M. Chandrashekharaiah. "Analysis of Machining Parameter and Surface Finish of Al-Si Alloys with Grain Refiners and/or Modifier." Materials Science Forum 830-831 (September 2015): 91–94. http://dx.doi.org/10.4028/www.scientific.net/msf.830-831.91.

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The Al-Si alloy is a structural material which generally consists of two or more particulates. However, Al-Si alloys are the most common alloys and commercially available ones due to their economical production. The utilization of Al-Si alloys has given the scope of study to improve in its properties using some grain refiner like Al-5Ti-1B, Al-3B and modifiers like Al-10Sr. The Al alloys were selected based on the economical uses and also, on the basis such that hypoeutectic (i.e., LM-25), eutectic (i.e., LM-6) and hypereutectic (i.e., LM-30). This project aimed to synthesize Al alloys (LM-6,

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43

Gursoy, Ozen, and Giulio Timelli. "Lanthanides: a focused review of eutectic modification in hypoeutectic Al–Si alloys." Journal of Materials Research and Technology 9, no. 4 (2020): 8652–66. http://dx.doi.org/10.1016/j.jmrt.2020.05.105.

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44

Taghiabadi, R., and H. M. Ghasemi. "Dry sliding wear behaviour of hypoeutectic Al–Si alloys containing excess iron." Materials Science and Technology 25, no. 8 (2009): 1017–22. http://dx.doi.org/10.1179/174328408x302468.

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45

Nogita, K. "Aluminium phosphide as a eutectic grain nucleus in hypoeutectic Al-Si alloys." Journal of Electron Microscopy 53, no. 4 (2004): 361–69. http://dx.doi.org/10.1093/jmicro/dfh048.

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46

Ojha, K. V., Aruna Tomar, Devendra Singh, and G. C. Kaushal. "Shape, wear & mechanical properties of spray formed hypoeutectic Al-Si alloys." Transactions of the Indian Institute of Metals 61, no. 2-3 (2008): 139–43. http://dx.doi.org/10.1007/s12666-008-0017-2.

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47

Wang, Shou Ren, Ying Zi Wang, Li Ying Yang, Ru Ma, and Yong Wang. "Solute Redistribution Resulting in Growth of Primary Silicon in Cast Hypoeutectic Al-Si Alloys." Applied Mechanics and Materials 121-126 (October 2011): 367–71. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.367.

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The experimental data present that primary silicon is precipitated from eutectic and hypoeutectic Al–Si alloy melts. It attributes to solute redistribution on the chemical driving force. Si atoms are easy to segregate to form Si-Si clusters, resulting in primary silicon precipitated from hypereutectic Al–Si alloy. Another reason is that primary silicon is precipitated from solid-liquid interface front once solute concentration in the solidification front exceeds eutectic composition. Solute redistribution equations are derivate from Jackson-Chalmers equation. The third reason is that precious

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48

Li, Ji Wen, Ai Qin Wang, Jing Pei Xie, Wen Yan Wang, and Luo Li Li. "The Microstructure Characteristics and Wear Resistance of Rapidly Solidified Hypereutectic Al-Si Alloys." Materials Science Forum 654-656 (June 2010): 986–89. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.986.

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Rapidly solidified hypereutectic Al-21Si was prepared by the single roller melt-spinning technique. The microstructure morphology characteristics and phase structures of the alloy were characterized using SEM, TEM and XRD technique. The results showed that the grains were refined and the micro-nano composite structures were formed under rapid solidification. The microstructure of the Al-21Si alloy was composed of micro-nanostructured α-Al phase and feather-needle-like eutectic α-Al+β-Si phase. The α-Al phase was the leading phase in the eutectic α+Si phase. The nucleation and growth of primary

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49

Yan, Han, Congcong Zhu, Zhen Wu, and Wenli Gao. "Effect of Sb Addition on the Al–Si Eutectic of Hypoeutectic Al–Si Casting Alloys under Different Cooling Rates." MATERIALS TRANSACTIONS 61, no. 1 (2020): 181–87. http://dx.doi.org/10.2320/matertrans.mt-m2019225.

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50

Xu, Yanjin, Yanqing Su, Liangshun Luo, Jiangping Liu, Jingjie Guo, and Hengzhi Fu. "Study on in situ Al-Si functionally graded materials produced by traveling magnetic field." Science and Engineering of Composite Materials 19, no. 3 (2012): 209–14. http://dx.doi.org/10.1515/secm-2011-0146.

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AbstractThe aim of this contribution was to investigate the microstructure of in situ Al-Si functionally graded materials produced by traveling magnetic field. The research shows that the composition and associated microstructural feature of Al-Si alloys processed by this method changes from the outer of samples to the inner, respectively, from Al-Si hypereutectic with particles of primary Si to Al-Si eutectic to hypoeutectic composition with a great number of primary Al dendrites. Moreover, the hardness, the wear resistance of samples and the volume fraction of primary Si particles all have o

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