Fusion and friction stir welding of aluminum-metal-matrix composites

Storjohann, D.; Barabash, Oleg M; David, S. A.; Sklad, P.S.; Bloom, E.E.; Babu, S. S.

doi:10.1007/s11661-005-0093-4

Cited by 170 publications

(88 citation statements)

References 18 publications

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“…This suggests that no reaction occurred between the SiC and Al 2 O 3 powders or between the aluminum matrix and the powders during three FSP passes, which can be considered to be a merit of the FSP as a surfacing technique over other traditional fusion surfacing techniques such as laser beam and thermal spraying. 29) It was reported by many authors 14,21,30) that there were undesirable interfacial reactions between the matrix and the reinforcement during fabrication by liquid surfacing techniques. For example, Majumdar et al, 14) detected large Al-carbide plates at the SiC/Al of SiC particles introduced onto Al-substrate by laser injection.…”

Section: Composites Properties After Triple Passesmentioning

confidence: 99%

“…[10][11][12][21][22][23][24][25] It is generally known that the fabrication of SMMCs by traditional fusion surfacing techniques such as laser beam and thermal spraying may lead to the deterioration of MMCs properties. [26][27][28][29][30] In the case of Al 2 O 3 , the Al 2 O 3 may decompose to Al and oxygen gas (forming porosities) on contact with liquid aluminum in addition to the tendency of the Al 2 O 3 particle to clustering. 30) Similarly, the SiC may react with molten aluminum to form brittle Al 4 C 3 carbide.…”

Section: Introductionmentioning

confidence: 99%

“…[26][27][28][29][30] In the case of Al 2 O 3 , the Al 2 O 3 may decompose to Al and oxygen gas (forming porosities) on contact with liquid aluminum in addition to the tendency of the Al 2 O 3 particle to clustering. 30) Similarly, the SiC may react with molten aluminum to form brittle Al 4 C 3 carbide. 21,29) Moreover, one of the severe problems in preparation of hybrid composites by normal fusion process is the agglomeration of each reinforcement, which results in inhomogeneous reinforcement distribution in the matrix.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of Surface-Hybrid-MMCs Layer on Aluminum Plate by Friction Stir Processing and Its Wear Characteristics

et al. 2009

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Aluminum-base hybrid composites reinforced with mixtures of SiC and Al 2 O 3 particles 1.25 mm in average size have been fabricated on an A 1050-H24 aluminum plate by friction stir processing (FSP) and their wear resistance has been investigated as a function of the relative weight ratios of the particles. A mixture of SiC and Al 2 O 3 powders of different weight ratios was packed into a groove of 3 mm width and 1.5 mm depth cut on the aluminum plate, and covered with an aluminum sheet 2 mm thick. A FSP tool of square probe shape, rotated at a speed of 1500 rpm, was plunged into the plate through the cover sheet and the groove, and moved along the groove at a travelling speed of 1.66 mm/s. After the hybrid composite was fabricated on the Al plate, the homogeneity of the particles distribution inside the Al matrix has been evaluated from the macro/microstructure and hardness distribution. Moreover, the wear characteristics of the resulted hybrid composites were evaluated using a ball-on-disc wear tester at room temperatures at normal loads of 2 and 5 N. As a result, it was found that the reinforcement particles were distributed homogenously inside the nugget zone without any defects except some voids that appeared around the Al 2 O 3 particles. The average hardness decreased with increasing the relative content of Al 2 O 3 particles. Regarding the wear characteristics, the wear volume losses of the hybrid composites depended on the applied load and the relative ratio of SiC and Al 2 O 3 particles. The hybrid composite of 80% SiC þ 20% Al 2 O 3 showed superior wear resistance to 100% SiC and Al 2 O 3 or any other hybrid ratios at a normal load of 5 N.

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Section: Composites Properties After Triple Passesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fabrication of Surface-Hybrid-MMCs Layer on Aluminum Plate by Friction Stir Processing and Its Wear Characteristics

et al. 2009

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“…Nowadays, Aluminum Metal Matrix Composites (AMMCs) are one of the advanced engineering materials that have been developed for weight critical applications in the aerospace, defense, marine and more recently in the automotive and transport industries due to their excellent combination of high specific strength and superior wear resistance. In the automobile sector, AMMCs are used for making various components such as pistons, cylinder heads, connecting rods, where the tribological properties of the materials are very important (Sajjadi et al, 2012;Yadav et al, 2011;Storjohann et al, 2005). MMCs with uniform dispersion particles in the range of 10 nm -1 µm are termed "Metal Matrix Nano-Composites" (MMNCs).…”

Section: Introductionmentioning

confidence: 99%

Characterization of Aluminum Alloy-Based Nanocomposites Produced by the Addition of Al-Ti5-B1 to the Matrix Melt

El-Labban

Abdelaziz²,

Mahmoud³

2013

American Journal of Nanotechnology

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The present study is an attempt to produce aluminum matrix nanocomposites using a certain aluminum alloy (which its melt has high fluidity) as a matrix material and reinforced with hard and stable fine (nano-sized) precipitates. Therefore, Al-Ti5-B1 master alloy and Al-Si alloy of high silicon content were proposed for preparation of such nanocomposites. Three nanocomposites were prepared by adding AlTi5-B1 of three different percentages (1, 2 and 3 wt. %) to the melt of aluminum alloy at 710°C for a holding time of 10 min and application of mechanical stirring at this temperature. Finally, the treated melt was squeeze cast. The microstructures were investigated using optical and scanning electron microscopes. Phases and different constituents were analyzed with the aid of EDX and XRD analyzers. The addition of Al-Ti5-B1 master alloy with any percentages (even 1 wt. %) to the melt of aluminum alloy, led to remarkable decrease of the matrix grain size. Moreover, many fine precipitates were detected within the Al-Si matrix such as TiAl 3 phase in the form of flaky and blocky morphology and TiB 2 phase in the nano-sized particles. These precipitates act as heterogeneous sites for nucleation during solidification. The addition of Al-Ti5-B1 master alloy to the Al-Si base metal led to remarkable increase in the average hardness. As the added percentage of Al-Ti5-B1 master alloy is increased, the average hardness value is increased. The average hardness of addition of 3 wt. % Al-Ti5-B1 master alloy reached 130 HV, which was almost twice as high as the hardness of the Al-Si base metal.

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“…1,2) FSP (Friction Stir Processing, FSP) is a novel method to produce fine structures by means of its friction heat and severely plastic deformation, this thermal-mechanical treatment introduces significantly influence on microstructures such as grain size, 3) crystallographic orientation 4) and second phase particles 5,6) etc. However, materials possess finer structures is an essential factor to conduct better ductility performance, many researches [7][8][9] characterized the plastic deformation behaviors on different material which via thermal-mechanical treatments.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Stability of Friction Stirred AA 2218 Alloy on Tensile Properties at Elevated Temperature

2007

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The microstructural features of Al-Cu 2218 alloy after FSP were composed mainly of equiaxed 4 mm grains as well as a much more random orientation in SZ comparing to the extruded base metal. In this investigation, tensile properties of FSP specimens displayed an advanced performance than base metal. Furthermore, it should be noted that the FSP specimens possessed great elongation which even more than 100% at 400 C. As the test temperature over 450 C, the deterioration of the elongation could be responsible to second phase particles coarsening during tensile deformation process as well as abnormal grain growth. Ductility was commonly degenerated in both base metal and FSP specimens at 500 C, whole grains within FSP sample grew into large ones that conducted the seriously descent of ductility. It is rational to deduce that the tensile strain promoted the coarsening of particles that would resulted from Ostwald ripening phenomenon. The declination of elongation could be ascribed mainly to the microstructural stability problem at elevated temperature.

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Fusion and friction stir welding of aluminum-metal-matrix composites

Cited by 170 publications

References 18 publications

Fabrication of Surface-Hybrid-MMCs Layer on Aluminum Plate by Friction Stir Processing and Its Wear Characteristics

Fabrication of Surface-Hybrid-MMCs Layer on Aluminum Plate by Friction Stir Processing and Its Wear Characteristics

Characterization of Aluminum Alloy-Based Nanocomposites Produced by the Addition of Al-Ti5-B1 to the Matrix Melt

Microstructural Stability of Friction Stirred AA 2218 Alloy on Tensile Properties at Elevated Temperature

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