Densification and Structural Evolution in Spark Plasma Sintering Process of Mechanically Alloyed Nanocrystalline Fe-23Al-6C Powder

Yuichiro Koizumi; Takanori Tanaka; Yoritoshi Minamino; Nobuhiro Tsuji; Kiyoshi Mizuuchi; Yoshihira Ohkanda

doi:10.2320/matertrans.44.1604

Densification and Structural Evolution in Spark Plasma Sintering Process of Mechanically Alloyed Nanocrystalline Fe-23Al-6C Powder

Yuichiro Koizumi, Takanori Tanaka, Yoritoshi Minamino, Nobuhiro Tsuji, Kiyoshi Mizuuchi, Yoshihira Ohkanda

Materials Processing and Characterization Division

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Nanocrystalline Fe-23 at%Al-6 at%C alloy powder was produced by mechanical alloying of the mixture of iron powder and aluminum powder (Fe-25 at%Al) with methanol, and was consolidated into fully dense compact by spark plasma sintering (SPS) at 1273 K. The compacts have nanocrystalline microstructure composed of mixture of α-phase grains and κ-carbide (Fe ₃AlC) grains whose average grain size is about 50 nm. Although relatively large grains were also observed in places, their sizes were not over a few micrometers. The mechanisms of the densification and the structural evolution during the SPS process are discussed.

Original language	English
Pages (from-to)	1604-1612
Number of pages	9
Journal	Materials Transactions
Volume	44
Issue number	8
DOIs	https://doi.org/10.2320/matertrans.44.1604
Publication status	Published - 2003 Aug

Keywords

Aluminum
Carbide
FeAl
Iron
Mechanical alloying
Nanocrystal
Spark plasma sintering

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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Densification and Structural Evolution in Spark Plasma Sintering Process of Mechanically Alloyed Nanocrystalline Fe-23Al-6C Powder. / Koizumi, Yuichiro; Tanaka, Takanori; Minamino, Yoritoshi; Tsuji, Nobuhiro; Mizuuchi, Kiyoshi; Ohkanda, Yoshihira.

In: Materials Transactions, Vol. 44, No. 8, 08.2003, p. 1604-1612.

Research output: Contribution to journal › Article › peer-review

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AU - Koizumi, Yuichiro

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AU - Minamino, Yoritoshi

AU - Tsuji, Nobuhiro

AU - Mizuuchi, Kiyoshi

AU - Ohkanda, Yoshihira

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AB - Nanocrystalline Fe-23 at%Al-6 at%C alloy powder was produced by mechanical alloying of the mixture of iron powder and aluminum powder (Fe-25 at%Al) with methanol, and was consolidated into fully dense compact by spark plasma sintering (SPS) at 1273 K. The compacts have nanocrystalline microstructure composed of mixture of α-phase grains and κ-carbide (Fe 3AlC) grains whose average grain size is about 50 nm. Although relatively large grains were also observed in places, their sizes were not over a few micrometers. The mechanisms of the densification and the structural evolution during the SPS process are discussed.

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KW - Mechanical alloying

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Densification and Structural Evolution in Spark Plasma Sintering Process of Mechanically Alloyed Nanocrystalline Fe-23Al-6C Powder

Abstract

Keywords

ASJC Scopus subject areas

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