Wear analysis of aluminum-fly ash hybrid composites Jajneswar Nanda a , Sankar Narayan Das a,⇑ , Anup Choudhury a , Layatitdev Das b , Swadhin Kumar Patel c a Department of Mechanical Engineering, S ‘O’A Deemed to be University, Bhubaneswar 751030, India b Department of Mechanical Engineering, Veer Surendra Sai University of Technology, Burla 768018, India c Department of Metallurgical and Materials Engineering, National Institute of Technology, Rourkela 769008, India article info Article history: Received 13 January 2020 Received in revised form 9 March 2020 Accepted 11 March 2020 Available online xxxx Keywords: Wear resistance Sliding distance Abrasion Adhesion Delamination abstract This paper presents a review of the behavior of wear Characteristics of Aluminum Metal Matrix Composites reinforced with fly ash developed by different processes. The advantages of Metal Matrix Composites (MMCs) of Aluminum are high strength to weight ratio, high erosion and wear resistance with comparatively low cost. They are suitable in different fields of applications like structural, marine, aerospace, defense, automobile division due to its thermal stability and incredible specific strength. The effects of various fly ash reinforcements on wear behavior by highlighting their merits and demerits have been reviewed rigorously. The effects of fly ash percentage, temperature, time, applied load and speed, as well as the sliding distance on wear rate, are discussed in detail in this study. Ó 2020 Elsevier Ltd. All rights reserved. Selection and Peer-review under responsibility of the scientific committee of the 2nd International Con- ference on Processing and Characterization of Materials. 1. Introduction Standard metal alloys have limitations for the required combi- nations of hardness, wear, and density. To overcome these limita- tions and to satisfy the regularly growing engineering requirements of today’s machinery, Metal Matrix Composites (MMCs) are showing great influence. In current years, the metal matrix of aluminum-based MMCs has brought global recognition. For attractive mechanical & tribological properties, aluminum metal matrix composites are gaining momentum. Researchers are also motivated towards the production of advanced metal matrix composites that are lightweight along with consuming less fuel [1–5]. Type of reinforcement and its volume/weight fraction make it possible to have advanced aluminum metal matrix composite to have a rare but required kind of the sequence of properties like high strength, frictional wear, stiffness, resistance to fatigue, creep and corrosion. So, in aviation as well as in space and automotive industry AMMCs are of high importance [6]. Ceramic reinforced Aluminum Metal Matrix composites (AMMCs) are nowadays extensively used for most of the advanced applications like aero- space, defense, automobiles and lightweight and fuel-efficient type of applications [7–9]. Many reinforcements found in literature that are reinforced into aluminum metal matrix are SiC, Al 2 O 3 , fly ash, B 4 C, silicon nitride, etc. for mechanical and wear analysis fabri- cated through different fabrication techniques [10–13]. A. Daoud et al [7], prepared Al 2 O 3 reinforced into aluminum alloy through the squeeze casting method. They studied the microstructure along with the sliding wear performance of the composite. The finer microstructure was obtained on the addition of Al 2 O 3 and the application of squeeze pressure. The applied squeeze pressure enhances the mechanical locking among the matrix and alumina particles and eliminates interfacial properties thus improving interfacial strength. The hardness was found to increase linearly with the increase in a volume percentage of particles along with externally applied squeeze pressure. Fly ash is a coal combustion by-product collected from the elec- trostatic precipitators of the thermal power plant. This is a solid waste that is abundantly available at a very low cost and has a very low density. Thus, composites reinforced with fly ash make the components cheaper that are used in automotive and small engine applications. It is so anticipated that the inclusion of fly ash as rein- forcement into aluminum and its alloys will encourage another use of this cheaper solid-waste and simultaneously has the ability for conserving energy-intensive aluminum and to reduce the price of aluminum composites [22–24]. Aluminium composites reinforced with fly ash are vastly used in numerous applications like highway signs, automobile compo- nents, industrial products etc. [25]. The characterization of A356- fly ash composites reinforced with both narrow range of particles https://doi.org/10.1016/j.matpr.2020.03.259 2214-7853/Ó 2020 Elsevier Ltd. All rights reserved. Selection and Peer-review under responsibility of the scientific committee of the 2nd International Conference on Processing and Characterization of Materials. ⇑ Corresponding author. E-mail address: sankardas@soa.ac.in (S.N. Das). Materials Today: Proceedings xxx (xxxx) xxx Contents lists available at ScienceDirect Materials Today: Proceedings journal homepage: www.elsevier.com/locate/matpr Please cite this article as: J. Nanda, S. N. Das, A. Choudhury et al., Wear analysis of aluminum-fly ash hybrid composites, Materials Today: Proceedings, https://doi.org/10.1016/j.matpr.2020.03.259