Modelling of Processing Steps of New Generation ODS Alloys

The paper describes the processing of an oxide-dispersion strengthened (ODS) alloy with the chemical composition Fe-10Al-4Y 2 O 3 . A creep-resistant microstructure with coarse grains and a high volume fraction of finely dispersed oxides is obtained by a processing chain consisting of mechanical all...

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Vydáno v:Metallurgical and materials transactions. A, Physical metallurgy and materials science Ročník 51; číslo 10; s. 5296 - 5305
Hlavní autoři: Svoboda, J., Horník, V., Riedel, H.
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York Springer US 01.10.2020
Springer Nature B.V
Témata:
Alloy powders
Annealing
Characterization and Evaluation of Materials
Chemical composition
Chemistry and Materials Science
Creep strength
Dispersion hardening alloys
Grain growth
Heat treating
Hot rolling
Materials Science
Mechanical alloying
Metallic Materials
Microstructure
Nanotechnology
Recrystallization
Strain hardening
Structural Materials
Surfaces and Interfaces
Thin Films
ISSN:1073-5623, 1543-1940
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Shrnutí:The paper describes the processing of an oxide-dispersion strengthened (ODS) alloy with the chemical composition Fe-10Al-4Y 2 O 3 . A creep-resistant microstructure with coarse grains and a high volume fraction of finely dispersed oxides is obtained by a processing chain consisting of mechanical alloying of the powder, consolidation by hot rolling and subsequent annealing at 1200 °C. To understand the processes underlying the microstructural evolution during hot rolling and annealing, a model for strain hardening, recovery, recrystallization and grain growth is adapted. The quantitative model is able to describe the observed microstructural features and allows identifying processing windows in which the desired microstructure can be achieved.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 14
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-020-05949-0