Fabrication of oxide dispersion strengthened alloys through solid-state reactions between Fe[sbnd]Al and Fe                         2                         O                         3                          powders

Katsuhiro Sato; Nobuaki Sekido; Kyosuke Yoshimi

doi:10.1016/j.msea.2019.03.060

Fabrication of oxide dispersion strengthened alloys through solid-state reactions between Fe[sbnd]Al and Fe ₂ O ₃ powders

Katsuhiro Sato, Nobuaki Sekido, Kyosuke Yoshimi

ENG - Materials Science

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

2 Citations (Scopus)

Abstract

A novel procedure of ODS alloy fabrication was examined using a model alloy in the Fe[sbnd]Al[sbnd]O ternary system. Nano-sized Al oxides were precipitated within the α-Fe matrix through a reaction between Fe[sbnd]Al and Fe ₂ O ₃ powders. Two types of oxides, FeAl ₂ O ₄ and γ-Al ₂ O ₃ , were found to precipitate during sintering at 1000 °C and the subsequent annealing at 800 °C. The oxides showed sluggish coarsening at 800 °C, which then provided high resistance to coarsening for the α-Fe grains. Microstructure observation and Vickers hardness measurement indicated that the homogeneous dispersion of oxides was achieved through the present procedure without ball milling.

Original language	English
Pages (from-to)	68-74
Number of pages	7
Journal	Materials Science and Engineering A
Volume	754
DOIs	https://doi.org/10.1016/j.msea.2019.03.060
Publication status	Published - 2019 Apr 29

Keywords

Age hardening
Electron microscopy
Iron alloy
Oxide-dispersion-strengthened alloy
Precipitation
Solid oxygen source

ASJC Scopus subject areas

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

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Sato, K., Sekido, N., & Yoshimi, K. (2019). Fabrication of oxide dispersion strengthened alloys through solid-state reactions between Fe[sbnd]Al and Fe ₂ O ₃ powders Materials Science and Engineering A, 754, 68-74. https://doi.org/10.1016/j.msea.2019.03.060

Fabrication of oxide dispersion strengthened alloys through solid-state reactions between Fe[sbnd]Al and Fe ₂ O ₃ powders . / Sato, Katsuhiro; Sekido, Nobuaki ; Yoshimi, Kyosuke.

In: Materials Science and Engineering A, Vol. 754, 29.04.2019, p. 68-74.

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

Sato, K, Sekido, N & Yoshimi, K 2019, ' Fabrication of oxide dispersion strengthened alloys through solid-state reactions between Fe[sbnd]Al and Fe ₂ O ₃ powders ', Materials Science and Engineering A, vol. 754, pp. 68-74. https://doi.org/10.1016/j.msea.2019.03.060

Sato K, Sekido N , Yoshimi K. Fabrication of oxide dispersion strengthened alloys through solid-state reactions between Fe[sbnd]Al and Fe ₂ O ₃ powders Materials Science and Engineering A. 2019 Apr 29;754:68-74. https://doi.org/10.1016/j.msea.2019.03.060

Sato, Katsuhiro ; Sekido, Nobuaki ; Yoshimi, Kyosuke. / Fabrication of oxide dispersion strengthened alloys through solid-state reactions between Fe[sbnd]Al and Fe ₂ O ₃ powders In: Materials Science and Engineering A. 2019 ; Vol. 754. pp. 68-74.

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title = " Fabrication of oxide dispersion strengthened alloys through solid-state reactions between Fe[sbnd]Al and Fe 2 O 3 powders ",

abstract = " A novel procedure of ODS alloy fabrication was examined using a model alloy in the Fe[sbnd]Al[sbnd]O ternary system. Nano-sized Al oxides were precipitated within the α-Fe matrix through a reaction between Fe[sbnd]Al and Fe 2 O 3 powders. Two types of oxides, FeAl 2 O 4 and γ-Al 2 O 3 , were found to precipitate during sintering at 1000 °C and the subsequent annealing at 800 °C. The oxides showed sluggish coarsening at 800 °C, which then provided high resistance to coarsening for the α-Fe grains. Microstructure observation and Vickers hardness measurement indicated that the homogeneous dispersion of oxides was achieved through the present procedure without ball milling. ",

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N2 - A novel procedure of ODS alloy fabrication was examined using a model alloy in the Fe[sbnd]Al[sbnd]O ternary system. Nano-sized Al oxides were precipitated within the α-Fe matrix through a reaction between Fe[sbnd]Al and Fe 2 O 3 powders. Two types of oxides, FeAl 2 O 4 and γ-Al 2 O 3 , were found to precipitate during sintering at 1000 °C and the subsequent annealing at 800 °C. The oxides showed sluggish coarsening at 800 °C, which then provided high resistance to coarsening for the α-Fe grains. Microstructure observation and Vickers hardness measurement indicated that the homogeneous dispersion of oxides was achieved through the present procedure without ball milling.

AB - A novel procedure of ODS alloy fabrication was examined using a model alloy in the Fe[sbnd]Al[sbnd]O ternary system. Nano-sized Al oxides were precipitated within the α-Fe matrix through a reaction between Fe[sbnd]Al and Fe 2 O 3 powders. Two types of oxides, FeAl 2 O 4 and γ-Al 2 O 3 , were found to precipitate during sintering at 1000 °C and the subsequent annealing at 800 °C. The oxides showed sluggish coarsening at 800 °C, which then provided high resistance to coarsening for the α-Fe grains. Microstructure observation and Vickers hardness measurement indicated that the homogeneous dispersion of oxides was achieved through the present procedure without ball milling.

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