Abstract
Aluminium matrix composites (AMCs) are widely being used for high performance applications such as automotive, military and aerospace because of their improved physical and mechanical properties. In this course an effort has been made to study the microstructure characterization and mechanical properties of aluminium alloy AA7175 reinforced with titanium boride (TiB2) particles. Aluminium alloy AA7175 reinforced with various amounts (2.5, 5 and 7.5, by weight %) of TiB2 particles was prepared by stir casting method, in which TiB2 particles were precipitated in situ through an exothermic reaction between inorganic salts such as K2TiF6 (Potassium hexafluorotitanate) and KBF4 (Potassium tetrafluoroborate). The study of dry sliding behaviour was conducted using a pin-on-disc wear testing machine on the prepared samples, as per ASTM standards and it was observed that with the increase in concentration of reinforcement the wear resistance also increased. The microstructures of the AMCs were examined by optical and scanning electron microscope. The formation of TiB2 particles enhanced the micro-hardness and ultimate tensile strength (UTS) of the AMCs. The micro hardness of the in situ synthesized AA7175-TiB2 composite was found to be 67.63 for 2.5 %, 73.254 for 5 % and 77.92 for 7.5 % TiB2 reinforced composite.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Bartels, C., Raabe, D., Gottstein, G., Huber, U.: Investigation of the precipitation kinetics in an Al6061/TiB2 metal matrix composite. Mater Sci Eng. A. 237, 12–23 (1997)
Deuis, R.L., Subramanian, C., Yellup, J.M.: Dry sliding wear of aluminium composites—a review. Compos. Sci. Technol. 57, 415–435 (1997)
Herbert, M.A., Sarkar, C., Mitra, R., Chakraborty, M.: Microstructural Evolution, Hardness, and Alligatoring in the mushy state rolled cast Al-4.5Cu Alloy and in-situ Al-4.5Cu-5TiB2 composite. Metall. Trans. 38A, 2110–2126 (2007)
Kumar, S., Chakraborty, M., Sarma, V.S., Murty, B.S.: Tensile and wear behaviour of in situ Al–7Si/TiB2 particulate composites. Wear 265, 134–142 (2008)
Lakshmi, S., Lu, L., Gupta, M.: In-situ preparation of TiB2 reinforced Al based composites. J Mater. Proc. Tech. 73, 160–166 (1998)
Mandal, A., Maiti, R., Chakraborty, M., Murty, B.S.: Effect of TiB2 particles on aging response of Al-Cu alloy. Mater. Sci. Eng. A. 386, 296–300 (2004)
Ramesh, C.S., Ahamed, A., Channabasappa, B.H., Keshavamurthy, R.: Development of Al 6063–TiB2 in situ composites. Mater. Des. 31, 2230–2236 (2010)
Ramesh, C.S., Pramod, S., Keshavamurthy, R.: A study on microstructure and mechanical properties of Al 6061–TiB2 in situ composites. Mater. Sci. Eng. A. 528, 4125–4132 (2011)
Surappa, M.K.: Aluminium matrix composites-Challenges and opportunities. Sadhana 28, 319–334 (2003)
Suresha, S., Sridhara, B.K.: Effect of addition of graphite particulates on the wear behaviour in aluminium–silicon carbide–graphite composites. Mater. Des. 31, 1804–1812 (2010)
Wang, C., Wang, M., Yu, B., Chen, D., Qin, P., Fenga, M.: The grain refinement behavior of TiB2 particles prepared with in situ technology. Mater. Sci. Eng., A 459, 238–243 (2007)
Wood, J.V., Davies P., Kellie, J.L.F.: Properties of reactively cast Aluminium-TiB2 alloys. Mater. Sci. Tech. 9, 833–840 (1993)
Xue, J., Wang, J., Han, Y., Li, P., Sun, B.: Effects of CeO2 additive on the microstructure and mechanical properties of in situ TiB2/Al composite. J. Alloy. Compd. 509, 1573–1578 (2011)
Zhao, D.G., Liu, X.F., Pan, Y.C., Bian, X.F., Liu, X.J.: Microstructure and mechanical properties of in situ synthesized (TiB2 + Al2O3)/Al–Cu composites. J. Mater. Process. Technol. 189, 237–241 (2007)
Author information
Authors and Affiliations
Corresponding authors
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2017 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Pujar, A.M., Kulkarni, C. (2017). Study of Mechanical Properties and Microstructure of Aluminium Alloy Reinforced with TiB2, by in Situ Technique. In: Mohan B., R., Srinikethan, G., Meikap, B. (eds) Materials, Energy and Environment Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-10-2675-1_2
Download citation
DOI: https://doi.org/10.1007/978-981-10-2675-1_2
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-10-2674-4
Online ISBN: 978-981-10-2675-1
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)