Compositing Technology through Friction Stir Processing

Kimoto, Yoshihisa; Nagaoka, Toru; Watanabe, Hiroyuki; Fukusumi, Masao; Morisada, Yoshiaki; Fujii, Hidetoshi

doi:10.7791/jspmee.4.148

Cited by 2 publications

(2 citation statements)

References 39 publications

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“…The technology of hardened layer formation by partial compositing has been actively studied. 21) In the present work, our extrusion and heating during processing is not much higher than ARB, HPT and FSP. Considering those phenomena, each fiber in the Al filters is tightly and mechanically bonded together by hot extrusion.…”

Section: Resultsmentioning

confidence: 58%

Fabrication of Al-Based Composite Extruded Plates Containing Cellulose Nanofibers and Their Microstructure and Mechanical Properties

et al. 2022

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CeNF/Al-based composites were prepared using CeNFs collected by a non-woven aluminum filter, followed by hot extrusion to obtain plates. Gel-like CeNFs were collected by an aluminum non-woven filter and compacted by a warm press to obtain a compressed form with a lighter specific density than pure aluminum. The compressed forms were hot extruded to fabricate bars and plates. Both bars and plates were observed in the macro-and microstructural morphology and XRD measurements. They were not significantly carbonized to graphite only, which was inferred to be present as CeNF under the present experimental conditions. Microstructural observations show that CeNFs are aggregated and present in the pores/cracks between the Al filters in the compressed forms. Al filters and CeNF aggregates were more finely mixed when the material was fabricated into hot extruded plates with a higher extrusion ratio. The maximum tensile strength of the CeNF/Al composite extruded plate was about 1.5 times higher than pure aluminum. In addition, the extruded plates could be cold-rolled by about 30%, and the maximum tensile strength of the extruded sheets was found to be about twice that of pure aluminum.

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Section: Resultsmentioning

confidence: 58%

Fabrication of Al-Based Composite Extruded Plates Containing Cellulose Nanofibers and Their Microstructure and Mechanical Properties

et al. 2022

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“…The FSPP is a simple and rapid process to fabricate particulate metal matrix composites (PMMCs), but the FSPP requires 3 or 4 passes along the same line to obtain homogeneous PMMCs 8) , and has difficulty in controlling the particle volume fraction (VF). The FSPP can also yield further refined grains and particles to enhance the mechanical properties 8) , but it is disadvantageous for the thermal conductivity (TC) due to the increase of interfacial thermal barriers 9) . So in this study, we have applied a friction powder sintering (FPS) [10][11][12] shown in Al after dissolving NaCl in the water.…”

Section: Introductionmentioning

confidence: 99%

Thermal Conductivity of Al/SiC Particulate Composites Produced by Friction Powder Sintering

Kimoto

Nagaoka

Mizuuchi

et al. 2016

J. Jpn. Soc. Powder Powder Metallurgy

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Friction powder sintering (FPS) is a recently-developed technique to produce particulate metal matrix composites (PMMCs). In FPS, powders including metallic and ceramic particles are compacted by the pressure and frictional heat induced by a rotating tool. We have applied FPS to obtain Al-50 vol.% SiC PMMCs and evaluated the thermal conductivity of the composites. FPS has been performed under the tool rotating rate of 1500 rpm and tool pressure of 31 MPa. By extending the sintering time from 1 minute to 2 minute, the relative packing density has increased from 81 % to 91 %, and the thermal conductivity has been enhanced from 66 W/mK to 110 W/mK. It has been noted that the further densification of the composites is necessary to draw the potential thermal conductivity.

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Compositing Technology through Friction Stir Processing

Cited by 2 publications

References 39 publications

Fabrication of Al-Based Composite Extruded Plates Containing Cellulose Nanofibers and Their Microstructure and Mechanical Properties

Fabrication of Al-Based Composite Extruded Plates Containing Cellulose Nanofibers and Their Microstructure and Mechanical Properties

Thermal Conductivity of Al/SiC Particulate Composites Produced by Friction Powder Sintering

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