Abstract
Al-0.3Sc-0.15Zr-TiB2 composites with varying additions of Mg were cast through a novel processing technique using oil Quenched Investment Casting (QIC). Addition of Mg resulted in grain refinement of the composite. Al3(Sc, Zr) primary particles and TiB2 are responsible for grain refinement in these composites. Presence of fine nanosized uniformly distributed precipitates of Al3(Sc, Zr) at the peak age condition together with TiB2 particles increase the strength and ductility of the composites. The presence of Sc and Zr reduces the size of TiB2 particles down to 10 nm. The optimum magnesium content in the composites studied lies between 3.5 and 6%.
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M.D. Salvador, V. Amigó, N. Martinez, and C. Ferrer, Development of Al–Si–Mg Alloys Reinforced with Diboride Particles, J. Mater. Process. Technol., 2003, 143–144, p 598–604
A. Mandal, B.S. Murty, and M. Chakraborty, Sliding Wear Behaviour of T6 Treated A356–TiB2 In-Situ Composites, Wear, 2008, 265, p 1606–1618
Y. Zhang, N. Ma, H. Wang, Y. Le, and X. Li, Damping Capacity of Insitu TiB2 Particulates Reinforced Aluminium Composites With Ti Addition, Mater. Des., 2007, 28, p 628–632
J. Fjellstedt and A.E.W. Jarfors, On the Precipitation of TiB2 in Aluminium Melts from the Reaction with KBF4 and K2TiF6, Mater. Sci. Eng. A, 2005, 413–414, p 527–532
K.V.S. Prasad, B.S. Murty, P. Pramanik, P.G. Mukunda, and M. Chakraborty, Reaction of Fluoride Salts With Aluminium, Mater. Sci. Technol., 1996, 12, p 766–770
B.S. Murty, S.A. Kori, K. Venkateswarlu, R.R. Bhat, and M. Chakraborty, Manufacture of Al-Ti-B Master Alloys by the Reaction of Complex Salts With Molten Aluminium, J. Mater. Process. Technol., 1999, 89–90, p 152–158
A. Jha and C. Dometakis, The Dispersion Mechanism of TiB2 Ceramic Phase in Molten Aluminium and Its Alloys, Mater. Des., 1997, 18, p 297–301
T. Fan, G. Yang, and D. Zhang, Thermodynamic Effect of Alloying Addition on In-Situ reinforced TiB2/Al Composites, Metall. Mater. Trans., 2005, 36A, p 225–233
S. Lakshmi, L. Lu, and M. Gupta, In Situ Preparation of TiB2 Reinforced Al Based Composites, J. Mater. Process. Technol., 1998, 73, p 160–166
P.S. Mohanty and J.E. Gruzleski, Mechanism of Grain Refinement in Aluminium, Acta Met. Mater., 2005, 43, p 2001–2012
Y.M. Youssef, R.J. Dashwood, and P.D. Lee, Effect of Clustering on Particle Pushing and Solidification Behaviour in TiB2 Reinforced Aluminium PMMCs, Composites A, 2005, 36, p 747–7632
T. Srithanan and H. Li, Optimizing the Composition of Master Alloys for Grain Refining Aluminium, Scripta Mater., 1996, 35, p 1053–1056
H. Li, T. Sritharam, Y.M. Lam, and N.Y. Leng, Effects of Processing Parameters on the Performance of Al Grain Refinement Master Alloys Al-Ti and Al-B in Small Ingots, J. Mater. Process. Technol., 1997, 66, p 253–257
P.L. Schaffer and A.K. Dahle, Settling Behaviour of Different Grain Refiners in Aluminium, Mater. Sci. Eng. A, 2005, 413–414, p 373–378
A.M. Bunn, P. Schumacher, M.A. Kearns, C.B. Boothroyd, and A.L. Greer, Grain Refinement in Aluminium Melts: A Study of the Mechanisms of Poisoning by Zirconium, Mater. Sci. Technol., 1999, 15, p 1115–1123
A.F. Norman, P.B. Prangnell, and R.S. Mcewen, The Solidification Behaviour of Dilute Aluminium-Scandium Alloys, Acta Mater., 1998, 46, p 5715–5732
N.A. Belov, A.N. Alabin, D.G. Eskin, and V.V. Istomin-Kastrovskii, Optimization of Hardening of Al-Zr-Sc Cast Alloys, J. Mater. Sci., 2006, 41, p 5890–5899
N. Blake and M.A. Hopkins, Constitution and Age Hardening of Al-Sc Alloys, J. Mater. Sci, 1985, 20, p 2861–2867
Z. Yin, Q. Pan, Y. Zhang, and F. Jiang, Effect of Minor Sc and Zr on the Microstructure and Mechanical Properties of Al-Mg Based Alloys, Mater. Sci. Eng., 2000, A280, p 151–155
V. Singh, K.S. Prasad, and A.A. Gokhale, Microstructure and Age Hardening Response of Cast Al-Mg-Sc-Zr Alloys, J. Mater. Sci., 2004, 39, p 2861–2864
K. Venkateswarlu, L.C. Pathak, A.K. Roy, G. Das, P.K. Verma, M. Kumar, and R.N. Ghosh, Microstructure, Tensile Strength and Wear Behaviour of Al-Sc Alloy, Mater. Sci. Eng. A, 2004, 383, p 374–380
J. Røyset and N. Ryum, Scandium in Aluminium Alloys, Int. Mater. Rev., 2005, 50, p 19–44
A.K. Lohar, B.N. Mondal, and S.C. Panigrahi, Influence of Cooling Rate on the Microstructure and Ageing Behaviour of As-Cast Al-Sc-Zr Alloy, J. Mater. Process. Technol., 2010, 210, p 2135–2141
A.K. Lohar, B. Mondal, D. Rafaja, V. Klemm, and S.C. Panigrahi, Microstructure Investigation of As-Cast and Annealed Al-Sc and Al-Sc-Zr Alloys, Mater. Charact., 2009, 60, p 1387–1394
Z. Liu, Z. Li, M. Wang, and Y. Weng, Effect of Complex Alloying of Sc, Zr and Ti on the Microstructure and Mechanical Properties of Al–5 Mg Alloys, Mater. Sci. Eng. A, 2008, 483–484, p 120–122
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Lohar, A.K., Mondal, B.N. & Panigrahi, S.C. Effect of Mg on the Microstructure and Mechanical Properties of Al0.3Sc0.15Zr-TiB2 Composite. J. of Materi Eng and Perform 20, 1575–1582 (2011). https://doi.org/10.1007/s11665-010-9829-4
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DOI: https://doi.org/10.1007/s11665-010-9829-4