Mechanical Properties of Al/BN Nanocomposites Fabricated by Planetary Ball Milling and Conventional Hot Extrusion

Gostariani, Reza; Ebrahimi, R.; Asadabad, Mohsen Asadi

doi:10.1007/s40195-017-0640-1

Cited by 35 publications

(20 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…"The pressed samples were sintered at 580 º C for 45 min to fabricate the final dense samples with 10 mm diameter" Recently, the fabrication of bulk Al-matrix composites with use of BN particles have strongly been considered due to their light weight (lower than pure Al), superior strength at room temperature even at low contents of BN as a reinforcement, and good thermal stability at elevated temperatures [1][2][3]. Consequently, these composites are good candidates for automotive and aerospace applications in comparison to the other Al matrix composite materials.…”

Section: Discussionmentioning

confidence: 99%

“…An alternative for the process of spark plasma sintering is the process of hot extrusion that has several potential advantages including: the low cost of production, the easy manufacturing, no size limitation [9,10], the high shearing stresses during the process which is enough to break the nanometric oxide layer covering powder particles, and the occurrence of the dynamic recrystallization during the process [11]. Gostariani et al [3], fabricated nanocomposite by…”

Section: Discussionmentioning

confidence: 99%

“…"Mixtures of composite powders contain the Al powders with different content of boron nitride (1, 2 and 4 wt.%), and 1 wt.% stearic acid as process control agent (PCA) were prepared using a Fritsch P5 planetary ball mill. The composite powders were loaded with balls (10 mm diameter made of 100Cr6 with density of 7.81 g/cm 3 ) in a hardened chromium steel round-ended cup. The full volume, diameter, and deepest height of cup are 130 ml., 70 mm, and 45 mm respectively.…”

Section: Prime Novelty Statementmentioning

confidence: 99%

See 2 more Smart Citations

Fabrication of Al/AlN in-situ nanocomposite through planetary ball milling and hot extrusion of Al/BN: Microstructural evaluation and mechanical behavior

Gostariani

Bagherpour

Rifai

et al. 2018

Journal of Alloys and Compounds

Self Cite

View full text Add to dashboard Cite

In this study, Al/AlN in-situ nanocomposites were fabricated using Al/BN as the starting composite powders. The impact of adding hexagonal boron nitride (BN) to the Al matrix of commercial purity on the microstructure and mechanical behavior of the fabricated in-situ nanocomposites was investigated. Samples including 1, 2, and 4 wt.% boron nitride nanoparticles were produced by planetary ball milling of the composite powders and a post-process of hot extrusion. Scanning transmission electron microscopy revealed that boron nitride nanoparticles dissolved as a solid solution of B and N in the Al matrix at the as-milled state. Through the process of hot extrusion, AlN as the in-situ phase was formed by a reaction between Al and N. These led to improve the mechanical properties as well as grain refinement of Al/AlN nanocomposite. The average grain size of the fabricated composites with the use of 1, 2 and 4 wt.% BN was measured about 910, 823, and 760 nm respectively. It was found that combined strengthening mechanisms of grain refinement, a solid solution of mostly B and AlN in-situ phase formation improved the mechanical properties of Al/AlN nanocomposite. With the use of 1, 2, and 4 wt.% BN, the tensile strength of nanocomposite samples increased approximately 40, 56, and 57% in comparison with pure Al, respectively. The remarkable change in microstructure and mechanical properties of the nanocomposite was obtained when the content of BN is up to 2 wt.%.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Prime Novelty Statementmentioning

confidence: 99%

See 1 more Smart Citation

Fabrication of Al/AlN in-situ nanocomposite through planetary ball milling and hot extrusion of Al/BN: Microstructural evaluation and mechanical behavior

Gostariani

Bagherpour

Rifai

et al. 2018

Journal of Alloys and Compounds

Self Cite

View full text Add to dashboard Cite

show abstract

“…At the moment, every form of industry has tried to decrease the product weight and increase the strength. In this pursuit of new materials, aluminum matrix composites (AMCs) fulfill the criteria; ceramic particles are widely used to strengthen AMCs [1,2]. Because of lower cost and good aluminum wettability, SiC and Al2O3 were used frequently as reinforcement stage [3].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Wear Behaviour of Severe Plastic Deformed Al6063-Nano Al2O3 Composites Processed by Constrained Groove Pressing (CGP)

Adaveesh*,

Kumar T S,

Shekar B

2020

IJRTE

View full text Add to dashboard Cite

Metal matrix composites have been developed to meet the demand for lighter materials with high specific strength, stiffness and wear resistance. Particulate reinforced aluminium matrix composites are attractive materials due to their strength, ductility and toughness. The aluminium matrix is strengthened when it is reinforced with hard ceramic phases. Most of the metal matrix compound undergoes severe plastic deformation (SPD). SPD is a method to obtain fine crystalline structure in different bulk metals and alloys which possess different crystalline structure. The objective of the present work is to synthesize Al-6063 alloy by stir casting method and varying weight percentage of nano Al2O3 in steps of 2, 4, and 6 wt %. The composites are prepared using the process of compressed groove pressing (CGP) with extreme plastic deformation. The composite is characterized for mechanical and wear behaviour. SEM microphotographs confirmed the distribution of nano Al2O3 particles in the Al6063 Matrix alloy. In addition, SEM micrographs of Al6063 alloy with nano Al2O3 after constrained groove pressing shown grain refinement. Improvements in Hardness, UTS, yield strength, bending strength, percentage elongation and wear resistance of the Al-6063 matrix are obtained with the addition of Al2O3 particulates and also the properties are further enhanced with CGP. The developed metal matrix nano composite may be an alternative material for manufacturing of bearings.

show abstract

“…The mechanical properties of Al matrix nanocomposites containing 1, 2 and 4 wt% nano-boron nitride were evaluated in the research [28]. The results showed that a high fraction of the boron nitride nanoparticles dissolved and formed a solid solution in Al matrix during the milling process.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling of plastic deformation of a tube from dispersion-hardened aluminum alloy

2018

View full text Add to dashboard Cite

The influence of the internal and external pressure subjected to the tube from dispersion-hardened aluminium alloy was investigated. The approach which combines methods of crystal plasticity and mechanics of deformable solid was used to explore the limits of elastic and plastic resistance. The mathematical model of plastic deformation includes balance equations for deformation defects with regard to the generation and annihilation of shear dislocations, vacancy and interstitial prismatic dislocation loops, and dislocations in dipole configurations of vacancy and interstitial types and also equilibrium equation, geometrical and physical relations between the deformations, displacements and stresses. It has been established that as the temperature increases, the limits of the elastic and plastic resistance decrease. Results of investigation demonstrate that the hardening the alloy by nanoparticles significantly improves the strength characteristics of the material.

show abstract

Mechanical Properties of Al/BN Nanocomposites Fabricated by Planetary Ball Milling and Conventional Hot Extrusion

Cited by 35 publications

References 25 publications

Fabrication of Al/AlN in-situ nanocomposite through planetary ball milling and hot extrusion of Al/BN: Microstructural evaluation and mechanical behavior

Fabrication of Al/AlN in-situ nanocomposite through planetary ball milling and hot extrusion of Al/BN: Microstructural evaluation and mechanical behavior

Mechanical and Wear Behaviour of Severe Plastic Deformed Al6063-Nano Al2O3 Composites Processed by Constrained Groove Pressing (CGP)

Mathematical modeling of plastic deformation of a tube from dispersion-hardened aluminum alloy

Contact Info

Product

Resources

About