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Volume 11
Issue 1
10.3390/met11010140
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Communication

Fabrication of Two-Layered Aluminum Foam with Closed-Cell and Open-Cell Structures and Shaping of Closed-Cell Layer by Press Forming Immediately after Foaming

by
Yoshihiko Hangai
*,
Mizuki Ando
,
Masataka Ohashi
and
Kenji Amagai
Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Japan
*
Author to whom correspondence should be addressed.
Metals 2021, 11(1), 140; https://doi.org/10.3390/met11010140
Submission received: 29 December 2020 / Revised: 8 January 2021 / Accepted: 11 January 2021 / Published: 12 January 2021
(This article belongs to the Special Issue Recent Developments in Porous Metals and Metallic Foams)
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Abstract

Two-layered aluminum foam consisting of both closed and open cells is expected to improve the functionality of aluminum foam, because the cells have different morphologies and characteristics. In this study, press forming of the closed-cell layer of the two-layered aluminum foam immediately after foaming was performed to shape the closed-cell layer. By measuring the temperatures of the two layers during foaming, we found that it is necessary to use aluminum alloy with a higher melting point for the open-cell layer than that for the closed-cell layer to foam the closed-cell layer. In the press forming experiments, the closed-cell layer could be shaped by press forming while the shape of the open-cell layer was maintained.
Keywords: functionally graded materials; cellular materials; sintering; press forming functionally graded materials; cellular materials; sintering; press forming

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MDPI and ACS Style

Hangai, Y.; Ando, M.; Ohashi, M.; Amagai, K. Fabrication of Two-Layered Aluminum Foam with Closed-Cell and Open-Cell Structures and Shaping of Closed-Cell Layer by Press Forming Immediately after Foaming. Metals 2021, 11, 140. https://doi.org/10.3390/met11010140

AMA Style

Hangai Y, Ando M, Ohashi M, Amagai K. Fabrication of Two-Layered Aluminum Foam with Closed-Cell and Open-Cell Structures and Shaping of Closed-Cell Layer by Press Forming Immediately after Foaming. Metals. 2021; 11(1):140. https://doi.org/10.3390/met11010140

Chicago/Turabian Style

Hangai, Yoshihiko, Mizuki Ando, Masataka Ohashi, and Kenji Amagai. 2021. "Fabrication of Two-Layered Aluminum Foam with Closed-Cell and Open-Cell Structures and Shaping of Closed-Cell Layer by Press Forming Immediately after Foaming" Metals 11, no. 1: 140. https://doi.org/10.3390/met11010140

APA Style

Hangai, Y., Ando, M., Ohashi, M., & Amagai, K. (2021). Fabrication of Two-Layered Aluminum Foam with Closed-Cell and Open-Cell Structures and Shaping of Closed-Cell Layer by Press Forming Immediately after Foaming. Metals, 11(1), 140. https://doi.org/10.3390/met11010140

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