Microstructure and mechanical properties of 6061 Al alloy based composites with SiC nanoparticles
By A. J. Knowles, Xia Jiang, M. Galano, F. Audebert. 2014
211 citations recorded by the source corpus.
Abstract Materials with high specific strengths as well as damage tolerance are of great importance for automotive and aerospace applications. Ceramic reinforced metal matrix composites (MMCs) show good potential for these uses but have been hampered by insufficient ductility and production issues, both of which this work looks to resolve. Nanoparticle reinforced 6061 aluminium alloy matrix composites have been produced by a powder metallurgy route and shown to exhibit high strength and Young’s modulus alongside good ductility and low density. A powder metallurgy route consisting of high energy ball milling, hot isostatic pressing (HIP) and extrusion has proved a highly effective process for achieving a homogeneous distribution of particles, with minimal clustering of the nanoparticles, at an industrially relevant scale. After heat treatment the composites display high strengths, owing to SiC nanoparticle reinforcement as well as the age hardening effect. The remarkable feature of nanoparticle reinforced MMCs compared to micron size reinforcements is that particle fracture does not occur and effective particle–matrix bonding can be taking place, resulting in a greater combination of strength and toughness. The combination of properties achieved by the composites studied in this work are superior to most of the micron sized particle reinforced MMCs reported elsewhere and are well beyond what is possible with traditional aluminium alloys.
Subfields: Ceramics and Composites, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/2edc19c6365de0efc81078d1ca769c8f4db1a383
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In Ceramics and Composites
In Mechanical Engineering
Citations in the corpus
- Processing issues, machining, and applications of aluminum metal matrix composites (2018, background): “This discussion presents following factors that may affect the mechanical properties: reinforcement type,([191]) amount of reinforcement,([192]) reinforcement particle size,([188]) porosity amount,([96]) wetting agent,([62]) stirring speed,([1]) stirring time,([62]) and heat treatment.”
- Mechanical performance of particulate-reinforced Al metal-matrix composites (MMCs) and Al metal-matrix nano-composites (MMNCs) (2017, background): “D -1/2 are quantified, the values are regressively approximated as *180, *170, and *1800 MPa lm1/2 for the samples of Refs.”