Compression deformability of Γ and ζ Fe-Zn intermetallics to mitigate detachment of brittle intermetallic coating of galvannealed steels

Norihiko L. Okamoto; Daisuke Kashioka; Masahiro Inomoto; Haruyuki Inui; Hiroshi Takebayashi; Shu Yamaguchi

doi:10.1016/j.scriptamat.2013.05.003

Compression deformability of Γ and ζ Fe-Zn intermetallics to mitigate detachment of brittle intermetallic coating of galvannealed steels

Norihiko L. Okamoto, Daisuke Kashioka, Masahiro Inomoto, Haruyuki Inui, Hiroshi Takebayashi, Shu Yamaguchi

Research output: Contribution to journal › Article › peer-review

56 Citations (Scopus)

Abstract

Micropillar compression tests on each of the five intermetallic phases of the Fe-Zn system, which constitute the coating of galvannealed steels, have revealed that the Γ phase formed in direct contact with the steel substrate and the ζ phase formed on the outermost surface are ductile, sandwiching the other three brittle phases (Γ₁, δ_1k and δ_1p). Compression deformability of these ductile phases is considered to mitigate the coating failure through sustaining ruptured fragments of the brittle phases during the forming process.

Original language	English
Pages (from-to)	307-310
Number of pages	4
Journal	Scripta Materialia
Volume	69
Issue number	4
DOIs	https://doi.org/10.1016/j.scriptamat.2013.05.003
Publication status	Published - 2013 Aug
Externally published	Yes

Keywords

Compression test
Focused ion beam (FIB)
Iron alloys
Multilayers
Plastic deformation

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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Compression deformability of Γ and ζ Fe-Zn intermetallics to mitigate detachment of brittle intermetallic coating of galvannealed steels. / Okamoto, Norihiko L.; Kashioka, Daisuke; Inomoto, Masahiro; Inui, Haruyuki; Takebayashi, Hiroshi; Yamaguchi, Shu.

In: Scripta Materialia, Vol. 69, No. 4, 08.2013, p. 307-310.

Research output: Contribution to journal › Article › peer-review

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title = "Compression deformability of Γ and ζ Fe-Zn intermetallics to mitigate detachment of brittle intermetallic coating of galvannealed steels",

abstract = "Micropillar compression tests on each of the five intermetallic phases of the Fe-Zn system, which constitute the coating of galvannealed steels, have revealed that the Γ phase formed in direct contact with the steel substrate and the ζ phase formed on the outermost surface are ductile, sandwiching the other three brittle phases (Γ1, δ1k and δ1p). Compression deformability of these ductile phases is considered to mitigate the coating failure through sustaining ruptured fragments of the brittle phases during the forming process.",

keywords = "Compression test, Focused ion beam (FIB), Iron alloys, Multilayers, Plastic deformation",

author = "Okamoto, {Norihiko L.} and Daisuke Kashioka and Masahiro Inomoto and Haruyuki Inui and Hiroshi Takebayashi and Shu Yamaguchi",

note = "Funding Information: This work was supported by JSPS KAKENHI (Nos. 24246113 and 25709066) and the Elements Strategy Initiative for Structural Materials (ESISM) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan, and in part by Advanced Low Carbon Technology Research and Development Program (ALCA) from the Japan Science and Technology Agency (JST). This work was also supported by Research Promotion Grant from ISIJ, and Grants for Technical Research from JFE 21st Century Foundation. ",

year = "2013",

month = aug,

doi = "10.1016/j.scriptamat.2013.05.003",

language = "English",

volume = "69",

pages = "307--310",

journal = "Scripta Materialia",

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T1 - Compression deformability of Γ and ζ Fe-Zn intermetallics to mitigate detachment of brittle intermetallic coating of galvannealed steels

AU - Okamoto, Norihiko L.

AU - Kashioka, Daisuke

AU - Inomoto, Masahiro

AU - Inui, Haruyuki

AU - Takebayashi, Hiroshi

AU - Yamaguchi, Shu

N1 - Funding Information: This work was supported by JSPS KAKENHI (Nos. 24246113 and 25709066) and the Elements Strategy Initiative for Structural Materials (ESISM) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan, and in part by Advanced Low Carbon Technology Research and Development Program (ALCA) from the Japan Science and Technology Agency (JST). This work was also supported by Research Promotion Grant from ISIJ, and Grants for Technical Research from JFE 21st Century Foundation.

PY - 2013/8

Y1 - 2013/8

N2 - Micropillar compression tests on each of the five intermetallic phases of the Fe-Zn system, which constitute the coating of galvannealed steels, have revealed that the Γ phase formed in direct contact with the steel substrate and the ζ phase formed on the outermost surface are ductile, sandwiching the other three brittle phases (Γ1, δ1k and δ1p). Compression deformability of these ductile phases is considered to mitigate the coating failure through sustaining ruptured fragments of the brittle phases during the forming process.

AB - Micropillar compression tests on each of the five intermetallic phases of the Fe-Zn system, which constitute the coating of galvannealed steels, have revealed that the Γ phase formed in direct contact with the steel substrate and the ζ phase formed on the outermost surface are ductile, sandwiching the other three brittle phases (Γ1, δ1k and δ1p). Compression deformability of these ductile phases is considered to mitigate the coating failure through sustaining ruptured fragments of the brittle phases during the forming process.

KW - Compression test

KW - Focused ion beam (FIB)

KW - Iron alloys

KW - Multilayers

KW - Plastic deformation

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Compression deformability of Γ and ζ Fe-Zn intermetallics to mitigate detachment of brittle intermetallic coating of galvannealed steels

Abstract

Keywords

ASJC Scopus subject areas

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