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Metallurgical and Materials Transactions A

Erschienen in:

01.12.2012

Microstructure and Mechanical Properties of a Nitride-Strengthened Reduced Activation Ferritic/Martensitic Steel

verfasst von: Qiangguo Zhou, Wenfeng Zhang, Wei Yan, Wei Wang, Wei Sha, Yiyin Shan, Ke Yang

Erschienen in: Metallurgical and Materials Transactions A | Ausgabe 13/2012

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Abstract

Nitride-strengthened reduced activation ferritic/martensitic (RAFM) steels are developed taking advantage of the high thermal stability of nitrides. In the current study, the microstructure and mechanical properties of a nitride-strengthened RAFM steel with improved composition were investigated. Fully martensitic microstructure with fine nitrides dispersion was achieved in the steel. In all, 1.4 pct Mn is sufficient to suppress delta ferrite and assure the steel of the full martensitic microstructure. Compared to Eurofer97, the steel showed similar strength at room temperature but higher strength at 873 K (600 °C). The steel exhibited very high impact toughness and a low ductile-to-brittle transition temperature (DBTT) of 243 K (–30 °C), which could be further reduced by purification.

Vorheriger Artikel In Situ Observation of High Temperature Creep Behavior During Annealing of Steel

Nächster Artikel Evaluation of Structural and Optical Properties of Mn-Doped ZnO Thin Films Synthesized by Sol-Gel Technique

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Titel: Microstructure and Mechanical Properties of a Nitride-Strengthened Reduced Activation Ferritic/Martensitic Steel
verfasst von: Qiangguo Zhou
Wenfeng Zhang
Wei Yan
Wei Wang
Wei Sha
Yiyin Shan
Ke Yang
Publikationsdatum: 01.12.2012
Verlag: Springer US
Erschienen in: Metallurgical and Materials Transactions A / Ausgabe 13/2012
Print ISSN: 1073-5623
Elektronische ISSN: 1543-1940
DOI: https://doi.org/10.1007/s11661-012-1311-5

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