Alternative Fabrication Routes toward Oxide-Dispersion-Strengthened Steels and Model Alloys

Frank Bergner (Corresponding Author), Isabell Hilger, Jouko Virta, Juha Lagerbom, Gunter Gerbeth, Sarah Connolly, Zuliang Hong, Patrick S. Grant, Thomas Weissgärber

    Research output: Contribution to journalArticleScientificpeer-review

    6 Citations (Scopus)

    Abstract

    The standard powder metallurgy (PM) route for the fabrication of oxide-dispersion-strengthened (ODS) steels involves gas atomization to produce a prealloyed powder, mechanical alloying (MA) with fine oxide powders, consolidation, and finally thermal/thermomechanical treatment (TMT). It is well established that ODS steels with superior property combinations, for example, creep and tensile strength, can be produced by this PM/MA route. However, the fabrication process is complex and expensive, and the fitness for scaling up to the industrial scale is limited. At the laboratory scale, production of small amounts of well-controlled model systems continues to be desirable for specific purposes, such as modeling-oriented experiments. Thus, from the laboratory to industrial application, there is growing interest in complementary or alternative fabrication routes for ODS steels and related model systems, which offer a different balance of cost, convenience, properties, and scalability. This article reviews the state of the art in ODS alloy fabrication and identifies promising new routes toward ODS steels. The PM/AM route for the fabrication of ODS steels is also described, as it is the current default process. Hybrid routes that comprise aspects of both the PM route and more radical liquid metal (LM) routes are suggested to be promising approaches for larger volumes and higher throughput of fabricated material. Although similar uniformity and refinement of the critical nanometer-sized oxide particles has not yet been demonstrated, ongoing innovations in the LM route are described, along with recent encouraging preliminary results for both extrinsic nano-oxide additions and intrinsic nano-oxide formation in variants of the LM route. Finally, physicochemical methods such as ion beam synthesis are shown to offer interesting perspectives for the fabrication of model systems. As well as literature sources, examples of progress in the authors' groups are also highlighted.
    Original languageEnglish
    Pages (from-to)5313-5324
    JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
    Volume47
    Issue number11
    DOIs
    Publication statusPublished - 2016
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Fabrication
    Oxides
    Steel
    Powder metallurgy
    Liquid metals
    Mechanical alloying
    Powders
    Thermomechanical treatment
    Atomization
    Consolidation
    Ion beams
    Industrial applications
    Scalability
    Creep
    Tensile strength
    Innovation
    Throughput
    Gases
    Costs
    Experiments

    Keywords

    • powder meetallurgy
    • oxide dispersion strengthened steel
    • alternative methods

    Cite this

    Bergner, Frank ; Hilger, Isabell ; Virta, Jouko ; Lagerbom, Juha ; Gerbeth, Gunter ; Connolly, Sarah ; Hong, Zuliang ; Grant, Patrick S. ; Weissgärber, Thomas. / Alternative Fabrication Routes toward Oxide-Dispersion-Strengthened Steels and Model Alloys. In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 2016 ; Vol. 47, No. 11. pp. 5313-5324.
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    abstract = "The standard powder metallurgy (PM) route for the fabrication of oxide-dispersion-strengthened (ODS) steels involves gas atomization to produce a prealloyed powder, mechanical alloying (MA) with fine oxide powders, consolidation, and finally thermal/thermomechanical treatment (TMT). It is well established that ODS steels with superior property combinations, for example, creep and tensile strength, can be produced by this PM/MA route. However, the fabrication process is complex and expensive, and the fitness for scaling up to the industrial scale is limited. At the laboratory scale, production of small amounts of well-controlled model systems continues to be desirable for specific purposes, such as modeling-oriented experiments. Thus, from the laboratory to industrial application, there is growing interest in complementary or alternative fabrication routes for ODS steels and related model systems, which offer a different balance of cost, convenience, properties, and scalability. This article reviews the state of the art in ODS alloy fabrication and identifies promising new routes toward ODS steels. The PM/AM route for the fabrication of ODS steels is also described, as it is the current default process. Hybrid routes that comprise aspects of both the PM route and more radical liquid metal (LM) routes are suggested to be promising approaches for larger volumes and higher throughput of fabricated material. Although similar uniformity and refinement of the critical nanometer-sized oxide particles has not yet been demonstrated, ongoing innovations in the LM route are described, along with recent encouraging preliminary results for both extrinsic nano-oxide additions and intrinsic nano-oxide formation in variants of the LM route. Finally, physicochemical methods such as ion beam synthesis are shown to offer interesting perspectives for the fabrication of model systems. As well as literature sources, examples of progress in the authors' groups are also highlighted.",
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    Alternative Fabrication Routes toward Oxide-Dispersion-Strengthened Steels and Model Alloys. / Bergner, Frank (Corresponding Author); Hilger, Isabell; Virta, Jouko; Lagerbom, Juha; Gerbeth, Gunter; Connolly, Sarah; Hong, Zuliang; Grant, Patrick S.; Weissgärber, Thomas.

    In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 47, No. 11, 2016, p. 5313-5324.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

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    AU - Bergner, Frank

    AU - Hilger, Isabell

    AU - Virta, Jouko

    AU - Lagerbom, Juha

    AU - Gerbeth, Gunter

    AU - Connolly, Sarah

    AU - Hong, Zuliang

    AU - Grant, Patrick S.

    AU - Weissgärber, Thomas

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    KW - powder meetallurgy

    KW - oxide dispersion strengthened steel

    KW - alternative methods

    U2 - 10.1007/s11661-016-3616-2

    DO - 10.1007/s11661-016-3616-2

    M3 - Article

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