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Residual ferrite formation in 12CrODS steels

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Title: Residual ferrite formation in 12CrODS steels
Authors: Ukai, S. Browse this author →KAKEN DB
Kudo, Y. Browse this author
Wu, X. Browse this author
Oono, N. Browse this author
Hayashi, S. Browse this author
Ohtsuka, S. Browse this author
Kaito, T. Browse this author
Keywords: ODS
12Cr
Martensite
Full-ferrite
Residual ferrite
α/γ phase transformation
Pinning force
Chemical driving force
Fusion materials
Issue Date: Dec-2014
Publisher: Elsevier
Journal Title: Journal of nuclear materials
Volume: 455
Issue: 1-3
Start Page: 700
End Page: 703
Publisher DOI: 10.1016/j.jnucmat.2014.09.038
Abstract: Increasing Cr content from 9 to 12 mass% leads to superior corrosion and high-temperature oxidation resistances, and usually changes microstructure from martensite to a ferrite. To make transformable martensitic type of 12CrODS steels that have superior processing capability by using alpha/gamma phase transformation, alloy design was conducted through varying nickel content. The structure of 12CrODS steels was successfully modified from full ferrite to a transformable martensite-base matrix containing ferrite. This ferrite consists of both equilibrium ferrite and a metastable residual ferrite. It was shown that the fraction of the equilibrium ferrite is predictable by computed phase diagram and formation of the residual ferrite was successfully evaluated through pinning of alpha/gamma interfacial boundaries by oxide particles.
Type: article (author version)
URI: http://hdl.handle.net/2115/58009
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 鵜飼 重治

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