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

5 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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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

T1 - Alternative Fabrication Routes toward Oxide-Dispersion-Strengthened Steels and Model Alloys

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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AB - 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.

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

VL - 47

SP - 5313

EP - 5324

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

SN - 1073-5623

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