Effect of strengthening mechanisms on cold workability and instantaneous strain hardening behavior during grain refinement of AA 6061-10wt.% TiO2 composite prepared by mechanical alloying

Sivasankaran, S.; Sivaprasad, K.; Narayanasamy, R.; Iyer, Vijay Kumar

doi:10.1016/j.jallcom.2010.07.168

Cited by 26 publications

(3 citation statements)

References 37 publications

(65 reference statements)

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“…Lower volume fraction and larger aspect ratio result in a smaller nanoparticle diameter. The material properties of TiO 2 nanoparticles are adopted with Young's modulus E p =282.76 GPa and Poisson's ratio ν p = 0.3 (Sivasankaran, Sivaprasad, Narayanasamy, & Iyer, 2010). The resin matrix of urethane dimethacrylate (UDMA) monomer is taken from the published experimental test as E m = 3.9 GPa, ν m =0.…”

Section: Finite Element Modelingmentioning

confidence: 99%

Micromechanical analysis of nanoparticle-reinforced dental composites

Hua

Watanabe

2013

International Journal of Engineering Science

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The mechanical behavior of TiO 2 nanoparticle-reinforced resin-based dental composites was characterized in this work using a three-dimensional nanoscale representative volume element. The impacts of nanoparticle volume fraction, aspect ratio, stiffness, and interphase zone between the resin matrix and nanoparticle on the bulk properties of the composite were characterized. Results clearly demonstrated the mechanical advantage of nanocomposites in comparison to microfiber-reinforced composites. The bulk response of the nanocomposite could be further enhanced with the increased nanoparticle volume fraction, or aspect ratio, while the influence of nanoparticle stiffness was minimal. The effective Young's modulus and yield strength of the composite was also significantly affected by the interphase stiffness. Results obtained in this work could provide insights for the optimization of nanoparticle-reinforced dental composites.

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Section: Finite Element Modelingmentioning

confidence: 99%

Micromechanical analysis of nanoparticle-reinforced dental composites

Hua

Watanabe

2013

International Journal of Engineering Science

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“…Advanced possibilities of shaping the properties of materials containing aluminum alloys are provided by the production of composites with an aluminum matrix (AMC), where the matrix most often used is not aluminum but aluminum alloys [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45]. AMCs in relation to aluminum and its alloys show better physical and mechanical properties, including a very favorable strength-to-weight ratio, high strength and high modulus of elasticity, better fatigue strength, good ductility, low thermal expansion coefficient, good wear resistance and corrosion resistance and creep strength.…”

Section: General Information On Composite Materials With Aluminum Alloys Matricesmentioning

confidence: 99%

Advanced Composites with Aluminum Alloys Matrix and Their Fabrication Processes

Dobrzański¹

2021

Advanced Aluminium Composites and Alloys

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This chapter introduces advanced aluminum alloy matrix composites and their manufacturing processes. In the beginning, the state of the art is characterized and the general characteristics of aluminum and its practical applications are presented, starting with the history of aluminum. The current approximate distribution of bauxite resources in the world and the production of bauxite and alumina in the leading countries of the world, as well as the production of primary and secondary aluminum and the range of aluminum end products, are presented. Aluminum alloys intended for plastic deformation and castings, and composite materials in general and with a matrix of aluminum alloys in particular, have been characterized in general. Against this background, a detailed review of the results of the Author’s own research included in numerous projects and own publications on advanced composite materials, their production technology, their structure, and properties were done. The range of aluminum alloy matrices of composite materials was adequately characterized, which include AlSi12, AlSi7Mg0.3, AlMg1SiCu, AlMg3, AlMg5, and AlMg9, respectively. Composite materials tested in terms of manufacturing technology include three groups. The first group includes gas pressure infiltration with liquid aluminum alloys of suitably formed porous preforms. Porous frameworks as a reinforcement for pressure-infiltrated composite materials with a matrix of aluminum alloys are produced by three methods. Al2O3 powder with the addition of 30–50% carbon fibers is uniaxially pressed, sintered, and heated to thermally degrade the carbon fibers and create the required pore sizes. In the second case, the ceramic porous skeleton is produced with the use of halloysite nanotubes HNTs by mechanical milling, press consolidation, and sintering. A third method is SLS selective laser sintering using titanium powders. Another group of manufacturing technologies is the mechanical synthesis of the mixture of AlMg1SiCu aluminum alloy powder and respectively, halloysite nanotubes HNTs in a volume fraction from 5 to 15% or multi-wall carbon nanotubes MWCNTs in a volume fraction from 0.5 to 5%, and subsequent consolidation involving plastic deformation. The third group of analyzed materials concerns composite surface layers on substrates of aluminum alloys produced by laser feathering of WC/W2C or SiC carbides. The structure and properties of the mentioned composite materials with aluminum alloys matrices are described in detail. The chapter summary provides final remarks on the importance of advanced aluminum alloy composite materials in industrial development. The importance of particular groups of engineering materials in the history and the development of the methodology for the selection of engineering materials, including the current stage of Materials 4.0, was emphasized. The importance of material design in engineering design is emphasized. Concepts of the development of societies were presented: Society 5.0 and Industry 4.0. The own concept of a holistic model of the extended Industry 4.0 was presented, taking into account advanced engineering materials and technological processes. Particular attention was paid to the importance of advanced composite materials with an aluminum alloy matrix in the context of the current stage of Industry 4.0 of the industrial revolution. Growth in the production of aluminum, its alloys, and composites with its matrix was compared with that of steel. Despite the 30 times less production, aluminum is important due to its lower density. The challenges posed by the development in the Industry 4.0 stage, including the expectations of the automotive and aviation industry, force constant progress in the development of new materials with the participation of aluminum, including the composite materials with an aluminum alloy matrix presented in this chapter.

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“…Their results have shown that the workability behaviour of metals/alloys/composites of P/M components depends on the relative density, the aspect ratio, the preform geometry, the particle size, the particle reinforcement percentage for the composites, the die geometry, the lubricants and the compacting load. The cold workability and the strain hardening behaviour of a trimodal AA 6061-10% TiO2 nanocomposite [3] and the effects of the strengthening mechanisms on cold workability and the instantaneous strain hardening behaviour of a AA 6061-TiO2 bimodal composite prepared by MA have been analysed in previous works by Sivasankaran et al [3,33]. However, the effect of TiC nanolevel reinforcement addition on AA 6061 alloy by mechanical alloying, the addition of CG matrix phase on AA 6061-TiC nanocomposite and its deformation ability were not carried out so far.…”

Section: Introductionmentioning

confidence: 99%

Effects of a Coarse Grain Matrix Phase in AA 6061-TiC Nanocomposites on Microstructure, Cold Workability and Strain Hardening Behaviour

Jeyasimman¹,

Komal²,

Narayanasamy³

2016

IJERT

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Nanocrystalline AA 6061 alloy powders reinforced with 2 weight percentage (wt.%) TiC nanoparticles were blended with 0, 5, 10, 15, 20 and 25 wt.% coarse grain elemental powders related to AA 6061 alloy composition to produce a trimodal microstructure via mechanical alloying. The trimodal composite powders were consolidated at 500 MPa and sintered at 798 K for 6 h under a N2 atmosphere. The sintered composite preforms were characterised by optical microscopy. The room temperature compressive deformation behaviour was evaluated under a triaxial stress state condition. It was found that there was a gradual improvement in the compressive ductility as the percentage of the coarse grain phase increased in the nanocomposites. It was also found that the cold workability percentage of the 25 wt.% coarse grain trimodal composite was approximately five times higher than that of the 0 wt.% coarse grain composite.

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Effect of strengthening mechanisms on cold workability and instantaneous strain hardening behavior during grain refinement of AA 6061-10wt.% TiO2 composite prepared by mechanical alloying

Cited by 26 publications

References 37 publications

Micromechanical analysis of nanoparticle-reinforced dental composites

Micromechanical analysis of nanoparticle-reinforced dental composites

Advanced Composites with Aluminum Alloys Matrix and Their Fabrication Processes

Effects of a Coarse Grain Matrix Phase in AA 6061-TiC Nanocomposites on Microstructure, Cold Workability and Strain Hardening Behaviour

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