Strengthening of lotus-type porous copper by ECAE process

J. Lobos, Shinsuke Suzuki, H. Utsunomiya, H. Nakajima, M. A. Rodrigez-Perez

    研究成果: Article

    11 引用 (Scopus)

    抄録

    Lotus-type porous copper with directional cylindrical pores was fabricated by unidirectional solidification in a pressurized hydrogen atmosphere. Improvements in microstructure and mechanical properties of the lotus-type porous copper by equal-channel angular extrusion (ECAE) were investigated using a die with a channel angle of 150°. The porosity decreases with increasing pass number, and decreases from 46% to 30% by four passes. It means that pore closure in the ECAE process is not significant. Both the specific compressive yield strength σ0.2% and the Vickers hardness HV of the lotus copper increase with increasing pass number of ECAE. The ECAE processed porous copper shows improved σ0.2% and HV comparable to those of the extruded nonporous copper. It is suggested that ECAE is a promising method to strengthen porous metals without significant pore closure.

    元の言語English
    ページ(範囲)2007-2011
    ページ数5
    ジャーナルJournal of Materials Processing Technology
    212
    発行部数10
    DOI
    出版物ステータスPublished - 2012 10

    Fingerprint

    Extrusion
    Strengthening (metal)
    Strengthening
    Copper
    Closure
    Decrease
    Vickers hardness
    Solidification
    Porosity
    Hardness
    Hydrogen
    Mechanical Properties
    Atmosphere
    Yield stress
    Microstructure
    Die
    Metals
    Angle
    Mechanical properties

    ASJC Scopus subject areas

    • Computer Science Applications
    • Modelling and Simulation
    • Ceramics and Composites
    • Metals and Alloys
    • Industrial and Manufacturing Engineering

    これを引用

    Strengthening of lotus-type porous copper by ECAE process. / Lobos, J.; Suzuki, Shinsuke; Utsunomiya, H.; Nakajima, H.; Rodrigez-Perez, M. A.

    :: Journal of Materials Processing Technology, 巻 212, 番号 10, 10.2012, p. 2007-2011.

    研究成果: Article

    Lobos, J, Suzuki, S, Utsunomiya, H, Nakajima, H & Rodrigez-Perez, MA 2012, 'Strengthening of lotus-type porous copper by ECAE process', Journal of Materials Processing Technology, 巻. 212, 番号 10, pp. 2007-2011. https://doi.org/10.1016/j.jmatprotec.2012.04.024
    Lobos, J. ; Suzuki, Shinsuke ; Utsunomiya, H. ; Nakajima, H. ; Rodrigez-Perez, M. A. / Strengthening of lotus-type porous copper by ECAE process. :: Journal of Materials Processing Technology. 2012 ; 巻 212, 番号 10. pp. 2007-2011.
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