Role of Grain Boundaries on the Cyclic Steam Oxidation Behaviour of 18-8 Austenitic Stainless Steel

Jingbo Yan; Yimin Gao; Y. Gu; Fei Sun; Zhen Yang; Jintao Lu; Hongfei Yin; Yefei Li

doi:10.1007/s11085-015-9603-y

Role of Grain Boundaries on the Cyclic Steam Oxidation Behaviour of 18-8 Austenitic Stainless Steel

Jingbo Yan, Yimin Gao, Y. Gu, Fei Sun, Zhen Yang, Jintao Lu, Hongfei Yin, Yefei Li

Research output: Contribution to journal › Article

6 Citations (Scopus)

Abstract

This work investigated the oxidation behaviour of 18-8 austenitic stainless steel under cyclic steam oxidation condition. The results indicate that grain boundaries not only promote the chromium outward diffusion, but also provide the fast diffusion paths for the oxygen penetration. Thus, oxide inward growth occurs when the chromium content at scale-matrix interface cannot sustain the continuous chromia scale. In addition, the grain boundaries promote the Fe outward diffusion, accompanied with the fast growth of interfacial voids between two oxide layers. As a result, the oxide scale exfoliates once the voids grow to a critical value.

Original language	English
Pages (from-to)	409-424
Number of pages	16
Journal	Oxidation of Metals
Volume	85
Issue number	3-4
DOIs	https://doi.org/10.1007/s11085-015-9603-y
Publication status	Published - 2016 Apr 1
Externally published	Yes

Keywords

Interface
Oxide inward growth
Scale spallation
Thermal cycling

ASJC Scopus subject areas

Inorganic Chemistry
Metals and Alloys
Materials Chemistry

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Yan, J., Gao, Y., Gu, Y., Sun, F., Yang, Z., Lu, J., Yin, H., & Li, Y. (2016). Role of Grain Boundaries on the Cyclic Steam Oxidation Behaviour of 18-8 Austenitic Stainless Steel. Oxidation of Metals, 85(3-4), 409-424. https://doi.org/10.1007/s11085-015-9603-y

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abstract = "This work investigated the oxidation behaviour of 18-8 austenitic stainless steel under cyclic steam oxidation condition. The results indicate that grain boundaries not only promote the chromium outward diffusion, but also provide the fast diffusion paths for the oxygen penetration. Thus, oxide inward growth occurs when the chromium content at scale-matrix interface cannot sustain the continuous chromia scale. In addition, the grain boundaries promote the Fe outward diffusion, accompanied with the fast growth of interfacial voids between two oxide layers. As a result, the oxide scale exfoliates once the voids grow to a critical value.",

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AU - Yan, Jingbo

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AU - Gu, Y.

AU - Sun, Fei

AU - Yang, Zhen

AU - Lu, Jintao

AU - Yin, Hongfei

AU - Li, Yefei

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AB - This work investigated the oxidation behaviour of 18-8 austenitic stainless steel under cyclic steam oxidation condition. The results indicate that grain boundaries not only promote the chromium outward diffusion, but also provide the fast diffusion paths for the oxygen penetration. Thus, oxide inward growth occurs when the chromium content at scale-matrix interface cannot sustain the continuous chromia scale. In addition, the grain boundaries promote the Fe outward diffusion, accompanied with the fast growth of interfacial voids between two oxide layers. As a result, the oxide scale exfoliates once the voids grow to a critical value.

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KW - Thermal cycling

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