Tensile properties of 5052 Al Matrix composites reinforced with B4C particles

Lee, Kon Bae; Sim, Ho Sup; Kwon, Hoon; Cho, Soo‐Yeon

doi:10.1007/s11661-001-0031-z

Cited by 47 publications

(17 citation statements)

References 15 publications

(5 reference statements)

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“…In addition different techniques have been utilized to produce Al-B 4 C MMCs such as-liquid phase methods [17][18][19] and solid-state consolidation [15,16]. Among these methods, mechanical milling is especially used to produce nanocomposites with the mentioned reinforcement (B 4 C) [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Wear Behavior of Nanostructured Al and Al–B4C Nanocomposites Produced by Mechanical Milling and Hot Extrusion

Alizadeh

Taheri-Nassaj

2011

Tribol Lett

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Wear properties of a nanostructured matrix of Al prepared via mechanical milling and hot extrusion were investigated before and after incorporation of B 4 C nanoparticles. The sample powders were milled for a period of 20 h to produce nanopowders. Mechanical milling was used to prepare nanocomposite samples by addition of 2 and 4 wt% of B 4 C nanoparticles into the Al matrix. A pinon-disk setup was used to evaluate the wear properties of the hot extruded samples under dry condition. The results revealed a lower friction coefficient and a lower wear rate for the nanostructured matrix of Al in contrast to a commercial coarse grained Al matrix. The same pattern was also observed in the nanocomposite samples with respect to the base matrix. Hardness values were used to discuss the observed results. Scanning electron microscopy (SEM) was used to analyze the worn surface and wear debris.

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Section: Introductionmentioning

confidence: 99%

Wear Behavior of Nanostructured Al and Al–B4C Nanocomposites Produced by Mechanical Milling and Hot Extrusion

Alizadeh

Taheri-Nassaj

2011

Tribol Lett

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“…The B 4 C-Al interfaces, as well as their nearby areas, are clean and free of any other impurity particles, which are present in several other B 4 C/Al composites prepared by other methods, [22,[43][44][45][46][47][48][49][50] except for samples prepared by cryomilling with clean interfaces. [51][52][53][54] As shown in Figure 3, the areas E and F have an OR.…”

Section: B 4 C-al Interfacementioning

confidence: 99%

Interfacial Microstructure in a B4C/Al Composite Fabricated by Pressureless Infiltration

Luo

Song

Zhang

et al. 2011

Metall Mater Trans A

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In this work, B 4 C particulate-reinforced Al composite was fabricated by a pressureless infiltration technique, and its interfacial microstructure was studied in detail by X-ray diffraction as well as by scanning and transmission electron microscopy. The B 4 C phase was unstable in Al melt during the infiltration process, forming AlB 10 -type AlB 24 C 4 or Al 2.1 B 51 C 8 as a major reactant phase. The Al matrix was large grains (over 10 lm), which had no definite orientation relationships (ORs) with the randomly orientated B 4 C or its reactant particles, except for possible nucleation sites with f011g B 4 C almost parallel to {111} Al at a deviation angle of 1.5 deg. Both B 4 C-Al and reactant-Al interfaces are semicoherent and free of other phases. A comparison was made with the SiC/Al composite fabricated similarly by the pressureless infiltration. It was suggested that the lack of ORs between the Al matrix and reinforced particles, except for possible nucleation sites, is the common feature of the composites prepared by the infiltration method.

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“…Various aluminum matrix composite systems with reinforcing phases of B 4 C, [3][4][5][6][7][8][9][10][11][12][13] SiC, [2,9,11,12] Al 2 O 3 , [2,10,14] BN, [15] and AlN [16] have been developed via various techniques. Covalently bonded solids based on B, C, or N form the hardest materials, and B 4 C ranks the third just after diamond and cubic boron nitride.…”

Section: Introductionmentioning

confidence: 99%

“…[17] These unique properties, along with other attractive properties [18] such as high impact and wear resistance, high melting point, good resistance to chemical agents, and high capacity for neutron absorption, make B 4 C a likely candidate as the reinforcement in an Al matrix composite. [3][4][5][6][7][8][9][10][11][12][13] Fabrication of dense Al/B 4 C materials using liquid phase approaches is difficult, however, because a temperature as high as 1100°C is needed for the Al to completely wet the B 4 C surface, [3,5,8] and processing at such high temperatures leads to the formation of a series of high-temperature phases from chemical reactions between the B 4 C and the Al. [3][4][5][6][7][8] Powder metallurgy processing is another approach to manufacturing Al/B 4 C composites.…”

Section: Introductionmentioning

confidence: 99%

Cryomilling for the fabrication of a particulate B4C reinforced Al nanocomposite: Part I. Effects of process conditions on structure

Ye¹,

Schoenung

2006

Metall Mater Trans A

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Metal matrix composites (MMCs) are a relatively new category of engineering materials, which provide tailorable properties to meet specific needs. Cryomilling, mechanical milling at cryogenic temperatures, was employed in this study to fabricate nanostructured metal matrix composite powder with nanocrystalline aluminum alloys as the matrix and particulate B 4 C as the reinforcement. Cryomilling provided an extremely low temperature for the processing of this composite, which prevented the formation of secondary phases that are detrimental to mechanical properties. A uniform distribution of B 4 C in the Al and a clean strong interface between them were achieved. The contamination that results from cryomilling was analyzed. The effects of the B 4 C addition and the process control agent (PCA) on the microstructure of the composite powder were investigated. Results indicate that these additives had significant, yet opposing, effects on powder yield; a slight effect on contamination, particle size, and particle morphology; and no detectable effect on grain size refinement in the matrix.

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Tensile properties of 5052 Al Matrix composites reinforced with B4C particles

Cited by 47 publications

References 15 publications

Wear Behavior of Nanostructured Al and Al–B4C Nanocomposites Produced by Mechanical Milling and Hot Extrusion

Wear Behavior of Nanostructured Al and Al–B4C Nanocomposites Produced by Mechanical Milling and Hot Extrusion

Interfacial Microstructure in a B4C/Al Composite Fabricated by Pressureless Infiltration

Cryomilling for the fabrication of a particulate B4C reinforced Al nanocomposite: Part I. Effects of process conditions on structure

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