Characterization of Laves phase in Crofer 22 H stainless steel

Zheng Wen Hsiao; Bernd Kuhn; Delphic Chen; Lorenz Singheiser; Jui Chao Kuo; Dong Yih Lin

doi:10.1016/j.micron.2015.04.007

Characterization of Laves phase in Crofer 22 H stainless steel

Zheng Wen Hsiao, Bernd Kuhn, Delphic Chen, Lorenz Singheiser, Jui Chao Kuo, Dong Yih Lin

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

26 Citations (Scopus)

Abstract

This study investigated the effect of annealing temperature on the precipitation behavior of Crofer^Ⓡ 22 H at 600°C, 700°C, and 800°C. The grain size distribution, precipitate phase identification, and microstructure were analyzed using electron backscatter diffraction (EBSD) and energy dispersive X-ray spectroscopy (EDS). The morphology of Laves phase (Fe,Cr,Si)₂(Nb,W) precipitates having the Cr₂Nb structure changed from strip-like to needle-shaped as the annealing temperature was increased. The precipitates of the Laves phase also shifted from the grain boundaries to the grain interiors when the temperature was increased. However, the average grain size (150μm) of the ferritic matrix did not significantly change at 600°C, 700°C, and 800°C for 10h.

Original language	English
Pages (from-to)	59-64
Number of pages	6
Journal	Micron
Volume	74
DOIs	https://doi.org/10.1016/j.micron.2015.04.007
Publication status	Published - 2015 Jul 1

All Science Journal Classification (ASJC) codes

Structural Biology
General Materials Science
General Physics and Astronomy
Cell Biology

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10.1016/j.micron.2015.04.007

Cite this

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title = "Characterization of Laves phase in Crofer 22 H stainless steel",

abstract = "This study investigated the effect of annealing temperature on the precipitation behavior of CroferⓇ 22 H at 600°C, 700°C, and 800°C. The grain size distribution, precipitate phase identification, and microstructure were analyzed using electron backscatter diffraction (EBSD) and energy dispersive X-ray spectroscopy (EDS). The morphology of Laves phase (Fe,Cr,Si)2(Nb,W) precipitates having the Cr2Nb structure changed from strip-like to needle-shaped as the annealing temperature was increased. The precipitates of the Laves phase also shifted from the grain boundaries to the grain interiors when the temperature was increased. However, the average grain size (150μm) of the ferritic matrix did not significantly change at 600°C, 700°C, and 800°C for 10h.",

author = "Hsiao, {Zheng Wen} and Bernd Kuhn and Delphic Chen and Lorenz Singheiser and Kuo, {Jui Chao} and Lin, {Dong Yih}",

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doi = "10.1016/j.micron.2015.04.007",

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T1 - Characterization of Laves phase in Crofer 22 H stainless steel

AU - Hsiao, Zheng Wen

AU - Kuhn, Bernd

AU - Chen, Delphic

AU - Singheiser, Lorenz

AU - Kuo, Jui Chao

AU - Lin, Dong Yih

PY - 2015/7/1

Y1 - 2015/7/1

N2 - This study investigated the effect of annealing temperature on the precipitation behavior of CroferⓇ 22 H at 600°C, 700°C, and 800°C. The grain size distribution, precipitate phase identification, and microstructure were analyzed using electron backscatter diffraction (EBSD) and energy dispersive X-ray spectroscopy (EDS). The morphology of Laves phase (Fe,Cr,Si)2(Nb,W) precipitates having the Cr2Nb structure changed from strip-like to needle-shaped as the annealing temperature was increased. The precipitates of the Laves phase also shifted from the grain boundaries to the grain interiors when the temperature was increased. However, the average grain size (150μm) of the ferritic matrix did not significantly change at 600°C, 700°C, and 800°C for 10h.

AB - This study investigated the effect of annealing temperature on the precipitation behavior of CroferⓇ 22 H at 600°C, 700°C, and 800°C. The grain size distribution, precipitate phase identification, and microstructure were analyzed using electron backscatter diffraction (EBSD) and energy dispersive X-ray spectroscopy (EDS). The morphology of Laves phase (Fe,Cr,Si)2(Nb,W) precipitates having the Cr2Nb structure changed from strip-like to needle-shaped as the annealing temperature was increased. The precipitates of the Laves phase also shifted from the grain boundaries to the grain interiors when the temperature was increased. However, the average grain size (150μm) of the ferritic matrix did not significantly change at 600°C, 700°C, and 800°C for 10h.

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VL - 74

SP - 59

EP - 64

JO - Micron

JF - Micron

ER -

Characterization of Laves phase in Crofer 22 H stainless steel

Abstract

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