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Effect of nanoscale boron carbide particle addition on the microstructural evolution and mechanical response of pure magnesium
Affiliation:1. Department of Mechanical Engineering, National University of Singapore (NUS), 9 Engineering Drive 1, Singapore 117 576, Singapore;2. Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India;1. Department of Materials Engineering, Sahand University of Technology, P. O. Box 51335-1996, Tabriz, Iran;2. Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica, EEBE, Universitat Politècnica de Catalunya, c/Eduard Maristany 10-14, 08019 Barcelona, Spain;3. School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563, Tehran, Iran;4. Center of Excellence for High Performance Materials, School of Metallurgy and Materials Engineering, University of Tehran, Tehran, Iran;1. Department of Manufacturing Technology, Laboratory of Foundry, Central Metallurgical Research and Development Institute (CMRDI), P.O. 87, Halwan, Egypt;2. Department of Mining, Petroleum and Metallurgical Engineering, Faculty of Engineering, Cairo University, P.O. 12613, Giza, Egypt;1. Department of Precision Mechanics, Chuo University, 1-13-27 Kasuga, Bunkyo, Tokyo 112-8551, Japan;2. Material Analysis Department, NISSAN ARC, LTD., Natsushima-cho, Yokosuka, Kanagawa 237-0061, Japan;1. Department of NanoEngineering, Program of Materials Science and Engineering, University of California, San Diego, La Jolla, CA 92093, USA;2. Department of Materials Science and Engineering, Clemson University, Clemson, SC 29634, USA;3. Interdisciplinary School of Green Energy, Ulsan National Institute of Science & Technology (UNIST), Ulsan 689-798, South Korea;1. Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea;2. Graduate Institute of Ferrous Technology and Centre for Advanced Aerospace Materials, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea;3. Division for Advanced Materials, Korea Institute of Industrial Technology, Incheon 406-130, Republic of Korea;4. Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea;1. Department of Fuel, Minerals and Metallurgical Engineering, Indian Institute of Technology (ISM) Dhanbad, India;2. Galgotias College of Engineering and Technology, Greater Noida 201310, India;3. Department of Mechanical Engineering, Amity University Uttar Pradesh, Noida, India;4. Mechanical Engineering Department, Graphic Era (Deemed to be University), Dehradun, Uttarakhand, India
Abstract:In this study, the effect of nano-B4C addition on the microstructural and the mechanical behavior of pure Mg are investigated. Pure Mg-metal reinforced with different amounts of nano-size B4C particulates were synthesized using the disintegrated melt deposition technique followed by hot extrusion. Microstructural characterization of the developed Mg/x-B4C composites revealed uniform distribution of nano-B4C particulates and significant grain refinement. Electron back scattered diffraction (EBSD) analyses showed presence of relatively more recrystallized grains and absence of fiber texture in Mg/B4C nanocomposites when compared to pure Mg. The evaluation of mechanical properties indicated a significant improvement in tensile properties of the composites. The significant improvement in tensile ductility (∼180% increase with respect to pure Mg) is among the highest observed when compared to the pure Mg based nanocomposites existing in the current literature. The superior mechanical properties of the Mg/B4C nanocomposites are attributed to the uniform distribution of the nanoparticles and the tendency for texture randomization (absence of fiber texture) achieved due to the nano-B4C addition.
Keywords:Magnesium  Nano-composite  Mechanical properties  Scanning electron microscopy  Electron back scattered diffraction
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