Microstructures and intergranular corrosion resistances of hot-rolled austenitic stainless steel clad plates

Ju Chan Jin; Soochul Cho; Kihyuk Kim; Hoseop Sim; Byung Gyu Park; Young Kook Lee

doi:10.1016/j.jmrt.2023.07.192

Microstructures and intergranular corrosion resistances of hot-rolled austenitic stainless steel clad plates

Ju Chan Jin, Soochul Cho, Kihyuk Kim, Hoseop Sim, Byung Gyu Park, Young Kook Lee

Department of Materials Science and Engineering

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

15 Citations (Scopus)

Abstract

In this study, two stainless steel clad plates (STS 316L/A516-70N and STS 304L/A516-70N) were fabricated without Ni interlayers by hot rolling and normalizing under the same conditions, and their microstructures and intergranular corrosion resistances were comparatively evaluated. Although a similar amount of C diffused from carbon steel to stainless steel during clad fabrication, the thickness of the grain-boundary carburized layer was thinner in STS 316L due to Mo atoms segregated at the grain boundaries. The stainless steel parts of both clad plates had carbides even at their free surfaces and STS 304L also had some amount of δ ferrite. Nevertheless, the corrosion resistance of the free surfaces of both stainless steels was not undermined.

Original language	English
Pages (from-to)	1-13
Number of pages	13
Journal	Journal of Materials Research and Technology
Volume	26
DOIs	https://doi.org/10.1016/j.jmrt.2023.07.192
Publication status	Published - 2023 Sept 1

Bibliographical note

Publisher Copyright:
© 2023 The Authors

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Biomaterials
Surfaces, Coatings and Films
Metals and Alloys

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10.1016/j.jmrt.2023.07.192

Cite this

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abstract = "In this study, two stainless steel clad plates (STS 316L/A516-70N and STS 304L/A516-70N) were fabricated without Ni interlayers by hot rolling and normalizing under the same conditions, and their microstructures and intergranular corrosion resistances were comparatively evaluated. Although a similar amount of C diffused from carbon steel to stainless steel during clad fabrication, the thickness of the grain-boundary carburized layer was thinner in STS 316L due to Mo atoms segregated at the grain boundaries. The stainless steel parts of both clad plates had carbides even at their free surfaces and STS 304L also had some amount of δ ferrite. Nevertheless, the corrosion resistance of the free surfaces of both stainless steels was not undermined.",

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AU - Jin, Ju Chan

AU - Cho, Soochul

AU - Kim, Kihyuk

AU - Sim, Hoseop

AU - Park, Byung Gyu

AU - Lee, Young Kook

PY - 2023/9/1

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N2 - In this study, two stainless steel clad plates (STS 316L/A516-70N and STS 304L/A516-70N) were fabricated without Ni interlayers by hot rolling and normalizing under the same conditions, and their microstructures and intergranular corrosion resistances were comparatively evaluated. Although a similar amount of C diffused from carbon steel to stainless steel during clad fabrication, the thickness of the grain-boundary carburized layer was thinner in STS 316L due to Mo atoms segregated at the grain boundaries. The stainless steel parts of both clad plates had carbides even at their free surfaces and STS 304L also had some amount of δ ferrite. Nevertheless, the corrosion resistance of the free surfaces of both stainless steels was not undermined.

AB - In this study, two stainless steel clad plates (STS 316L/A516-70N and STS 304L/A516-70N) were fabricated without Ni interlayers by hot rolling and normalizing under the same conditions, and their microstructures and intergranular corrosion resistances were comparatively evaluated. Although a similar amount of C diffused from carbon steel to stainless steel during clad fabrication, the thickness of the grain-boundary carburized layer was thinner in STS 316L due to Mo atoms segregated at the grain boundaries. The stainless steel parts of both clad plates had carbides even at their free surfaces and STS 304L also had some amount of δ ferrite. Nevertheless, the corrosion resistance of the free surfaces of both stainless steels was not undermined.

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KW - Intergranular corrosion resistance

KW - Polarization

KW - Stainless steel clad plate

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Microstructures and intergranular corrosion resistances of hot-rolled austenitic stainless steel clad plates

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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