Fabrication of AZ91D/SiC Magnesium Matrix Composite with High Particle Reinforcement Loading, Produced by Mechanical Milling of Chips and Semi-Solid Powder Processing
Subject Areas : journal of New MaterialsSomayeh Nikmardan 1 , Vahid Pouyafar 2
1 - Department of Manufacturing, Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran
2 - Department of Manufacturing, Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran
Keywords: Spark plasma sintering, Semi-solid powder processing, AZ91D/SiC metal matrix composite, High particle reinforcement loading, Planetary ball mill,
Abstract :
Semi-solid powder processing (SPP) is a technology that combines traditional powder metallurgy and semi-solid forming methods and has potential to produce metal matrix composites with low cost and high efficiency. In this research, SPP was used to fabricate magnesium alloy AZ91D matrix composite with high SiC reinforcement loading. First, for preparing powder, AZ91D magnesium alloy chips with average size of 4 × 2 × 1 (mm) were mechanically milled with a planetary ball mill and then, for mechanical alloying, the obtained powder with 50 wt.% (36 vol.%) 2 µm silicon carbide were milled again. The milled powder and also AZ91D/SiC composite powder were investigated by a field emission scanning electron microscopy (FESEM), particle size analyzer (PSA) and X-ray diffractometery (XRD). Spark plasma sintering (SPS) apparatus was used to densify the prepared composite powder by heating the powder mixture to semi-solid temperatures 561 °C (equivalent to liquid fraction of 30% in the whole sample) and 576 °C (equivalent to liquid fraction of 40% in the whole sample) applying pressure simultaneously. Microstructure, density, hardness, compressive strength and also present phases in the sintered samples were studied. The results show composites with few porosities and good mechanical properties can be prepared by SPP.
1- Hirt, G. and Kopp, R., eds, Thixoforming: Semi-solid metal processing, John Wiley & Sons Weinheim, 2009.
2- Young, R. M. K. and Clyne, T. W., "A powder-based approach to semisolid processing of metals for fabrication of die-castings and composites", Journal of Materials Science, Vol. 21, no. 3, pp. 1057-1069, 1986.
3- Young, R. M. K. and Clyne, T. W., "A Powder Mixing and Preheating Route to Slurry Production for Semisolid Diecasting", Powder metallurgy, Vol. 29, no. 3, pp. 195-199, 1986.
4- Spencer, D. B., Mehrabian, R. and Flemings, M. C., "Rheological behavior of Sn-15 pct Pb in the crystallization range", Metallurgical Transactions, Vol. 3, no. 7, pp. 1925-1932, 1972.
5- Wu, Y. and Kim, G.-Y., "Compaction behavior of Al6061 powder in the semi-solid state", Powder Technology, Vol. 214, no. 2, pp. 252-258, 2011.
6- Javdani, A., et al., "Blended powder semisolid forming of Al7075/Al2O3 composites: Investigation of microstructure and mechanical properties", Materials & Design, Vol. 109, pp. 57-67, 2016.
7- Plookphol, T., Wisutmethangoon, S. and Gonsrang, S., "Influence of process parameters on SAC305 lead-free solder powder produced by centrifugal atomization," Powder Technol., Vol. 214, pp. 506-512, 2011.
8- Liu, Y., et al., "Preparation of amorphous Fe-based magnetic powder by water atomization", Powder Technol., Vol. 213, pp. 36-40, 2011.
9- Kim, K.H., et al., "Synthesis of nickel powders from various aqueous media through chemical reduction method", Mater. Chem. Phys., Vol. 86, pp. 420-424, 2004.
10- Orhan, G. and Hapçı, G., "Effect of electrolysis parameters on the morphologies of copper powder obtained in a rotating cylinder electrode cell", Powder Technol., Vol. 201, pp. 57-63, 2010.
11- Varol, T. and Canakci, A., "Effect of weight percentage and particle size of B4C reinforcement on physical and mechanical properties of powder metallurgy Al2024- B4C composites", Met Mater Int., Vol. 19, pp. 1227-34, 2013.
12- Canakci, A., Varol, T. and Ozsahin, S., "Analysis of the effect of a new process control agent technique on the mechanical milling process using a neural network model: measurement and modeling", Measurement, Vol. 46, pp. 1818-27, 2013.
13- بهادری یکتا، ا.، تقوایی، ا. ح.، شرفی، ش.، "اثر افزودن عامل کنترلکننده بر ریزساختار و خواص مغناطیسی آلیاژ جدید آمورف/نانوبلور پایه آهن تولیدشده بهروش آلیاژسازی مکانیکی،" فصلنامه علمی - پژوهشی موادنوین، جلد 9، شماره 34، ص. 60-45، 1397.
14- Thein, M. A., Lu, L. and Lai, M. O., "Effect of milling and reinforcement on mechanical properties of nanostructured magnesium composite", Journal of Materials Processing Technology, Vol. 209, no. 9, pp. 4439-4443, 2009.
15- Oginuma, H. and Yuasa, E., "Crystal Structure Formed in Mechanical Alloying Process of Mg-Al-Zn Powder Mixture Using Magnesium Alloy Machined Chips", JSME International Journal Series A Solid Mechanics and Material Engineering, Vol. 48, no. 4, pp. 381-386, 2005.
16- Kunze, J. M. and Bampton, C. C., "Challenges to developing and producing MMCs for space applications", JOM, Vol. 53, no. 4, pp. 22-25, 2001.
17- Miserez, A., et al., "Particle reinforced metals of high ceramic content", Materials Science and Engineering: A, Vol. 387, pp. 822-831, 2004.
18- Viswanath, A., et al., "Investigation on mechanical properties and creep behavior of stir cast AZ91-SiCp composites", Journal of Magnesium and Alloys, Vol. 3, no. 1, pp. 16-22, 2015.
19- Canakci, A., et al., "Determining the effect of process parameters on particle size in mechanical milling using the Taguchi method: measurement and analysis", Measurement, Vol. 46, no. 9, pp. 3532-3540, 2013.
20- Canakci, A. and Varol, T., "A novel method for the production of metal powders without conventional atomization process", Journal of Cleaner Production, Vol. 99, pp. 312-319, 2015.
21- Ma, J. and Lim, L. C., "Effect of particle size distribution on sintering of agglomerate-free submicron alumina powder compacts", Journal of the European Ceramic Society, Vol. 22, no. 13, pp. 2197-2208, 2002.
22- Fogagnolo, J. B., et al., "Effect of mechanical alloying on the morphology, microstructure and properties of aluminium matrix composite powders", Materials Science and Engineering: A, Vol. 342, no. 1-2, pp. 131-143, 2003.
23- Inem, B. and Pollard, G., "Interface structure and fractography of a magnesium-alloy, metal-matrix composite reinforced with SiC particles", Journal of Materials Science,Vol. 28, no. 16, pp. 4427-4434, 1993.
24- Miglietta, D., "Magnesium Silicide: a novel, Silicon-based material for printable thermoelectric devices", Master Thesis, Polytechnic University of Turin, Italy, 2018.
25- Nadiradze, A., et al, "Thermodynamic Probability of Realization of the Process of Silicon Dioxide Reduction by Magnesium at High Temperatures", Bulletin of the Georgian National Academy of Sciences, Vol. 3, no. 2, 2009.
26- Hong, T. W., et al., "Microstructural evolution and semisolid forming of SiC particulate reinforced AZ91HP magnesium composites", Materials science and technology, Vol. 16, no. 7-8, pp. 887-892, 2000.
27- Keneshloo, M., Paidar, M. and Taheri, M., "Role of SiC ceramic particles on the physical and mechanical properties of Al–4% Cu metal matrix composite fabricated via mechanical alloying", Journal of Composite Materials, Vol. 51, no. 9, pp. 1285-1298, 2017.
28- Luo, X. T., Li, C. J. and Yang, G. J., "Correlations between milling conditions and iron contamination, microstructure and hardness of mechanically alloyed cubic BN particle reinforced NiCrAl matrix composite powders", Journal of Alloys and Compounds, Vol. 548, pp. 180-187, 2013.
29- Wu, Y., et al., "Experimental Study on Viscosity and Phase Segregation of Al-Si Powders in Microsemisolid Powder Forming", Journal of Manufacturing Science and Engineering, Transactions of the ASME, Vol. 132, no. 1, pp. 011003:1-011003:7, 2010.
30- Qin, S., et al., "The effect of particle shape on ductility of SiCp reinforced 6061 Al matrix composites", Materials Science and Engineering: A, Vol. 272, pp. 363-370, 1999.
31- Chawla, N., et al., "Effect of SiC volume fraction and particle size on the fatigue resistance of a 2080 Al/SiCp composite", Metallurgical and Materials Transactions A, Vol. 29, no. 11, pp. 2843-2854, 1998.
32- Mackie, A. J., et al., "Carbon uptake and distribution in spark plasma sintering (SPS) processed Sm(Co, Fe, Cu, Zr)z" Materials Letters, Vol. 171, pp. 14-17, 2016.
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