Development of porosity in an oxide dispersion-strengthened ferritic alloy containing nanoscale oxide particles

J. H. Schneibel; C. T. Liu; D. T. Hoelzer; M. J. Mills; P. Sarosi; T. Hayashi; U. Wendt; H. Heyse

doi:10.1016/j.scriptamat.2007.07.029

Development of porosity in an oxide dispersion-strengthened ferritic alloy containing nanoscale oxide particles

J. H. Schneibel, C. T. Liu, D. T. Hoelzer, M. J. Mills, P. Sarosi, T. Hayashi, U. Wendt, H. Heyse

Alloy Behavior & Design

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

42 Scopus citations

Abstract

The development of porosity at 1000 °C in an oxide dispersion-strengthened ferritic alloy containing nanoscale (∼2-4 nm) oxide particles is investigated. A comparison with an alloy fabricated by internal oxidation instead of mechanical alloying demonstrates that the porosity formation is associated with mechanical alloying of the alloy powder with Y₂O₃ in argon. The pores grow in spite of a submicron grain size suggesting that the grain boundaries are not effective paths for removing entrapped gas from the pores.

Original language	English
Pages (from-to)	1040-1043
Number of pages	4
Journal	Scripta Materialia
Volume	57
Issue number	11
DOIs	https://doi.org/10.1016/j.scriptamat.2007.07.029
State	Published - Dec 2007

Funding

This research was sponsored by the Division of Materials Sciences and Engineering, US Department of Energy, under Contract DE-AC05-00OR22725 with UT-Battelle, LLC. A portion of this research was conducted at the SHaRE User Facility, which is sponsored by the Office of Basic Energy Sciences, Division of Scientific User Facilities, US Department of Energy. The review of the manuscript by Y. Yamamoto and J.T. Busby is gratefully acknowledged.

Keywords

High temperature deformation
Mechanical alloying
Oxide dispersion strengthening
Porosity
Steels

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10.1016/j.scriptamat.2007.07.029

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abstract = "The development of porosity at 1000 °C in an oxide dispersion-strengthened ferritic alloy containing nanoscale (∼2-4 nm) oxide particles is investigated. A comparison with an alloy fabricated by internal oxidation instead of mechanical alloying demonstrates that the porosity formation is associated with mechanical alloying of the alloy powder with Y2O3 in argon. The pores grow in spite of a submicron grain size suggesting that the grain boundaries are not effective paths for removing entrapped gas from the pores.",

keywords = "High temperature deformation, Mechanical alloying, Oxide dispersion strengthening, Porosity, Steels",

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AU - Schneibel, J. H.

AU - Liu, C. T.

AU - Hoelzer, D. T.

AU - Mills, M. J.

AU - Sarosi, P.

AU - Hayashi, T.

AU - Wendt, U.

AU - Heyse, H.

PY - 2007/12

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AB - The development of porosity at 1000 °C in an oxide dispersion-strengthened ferritic alloy containing nanoscale (∼2-4 nm) oxide particles is investigated. A comparison with an alloy fabricated by internal oxidation instead of mechanical alloying demonstrates that the porosity formation is associated with mechanical alloying of the alloy powder with Y2O3 in argon. The pores grow in spite of a submicron grain size suggesting that the grain boundaries are not effective paths for removing entrapped gas from the pores.

KW - High temperature deformation

KW - Mechanical alloying

KW - Oxide dispersion strengthening

KW - Porosity

KW - Steels

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JO - Scripta Materialia

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ER -

Development of porosity in an oxide dispersion-strengthened ferritic alloy containing nanoscale oxide particles

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