| Effect of grain refinement on the resistance of 304 stainless steel to breakaway oxidation in wet air |
| X. Peng; J. Yan; Y. Zhou; F. Wang
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| 2005
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| 发表期刊 | Acta Materialia
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| ISSN | 1359-6454
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| 卷号 | 53期号:19页码:5079-5088 |
| 摘要 | A 30 mu m thick nanocrystalline coating (NC) with a composition identical to that of conventional coarse-grained 304 stainless steel (SS) was prepared via direct current magnetron sputtering (DCMS). The DCMS NC exhibited a typical columnar microstructure, with a mean grain size of similar to 12 nm in the plane normal to the growth direction. Comparison of the oxidation of the 304 NC with 304 SS (similar to 20 mu m in an average grain size) was investigated at temperatures (700-900 degrees C) in flowing air with 0-40% H2O vapor. Catastrophic breakaway oxidation started from the upstream edge of the coarse-grained sample in wet air after an incubation period, due to the conversion of protective Cr-rich scale into non-protective Fe-rich one as a result of the water-vapor-promoted evaporation of chromia from scale. Increasing temperature or water-vapor concentration accelerated the appearance of breakaway oxidation. In contrast, breakaway oxidation did not occur in wet air for the DCMS NC, where abundant grain boundaries greatly enhanced the Cr diffusion to guarantee the stable growth of the Cr-rich scale. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 部门归属 | chinese acad sci, met res inst, state key lab corros & protect, shenyang 110016, liaoning, peoples r china.;peng, x (reprint author), chinese acad sci, met res inst, state key lab corros & protect, 62 wencui rd, shenyang 110016, liaoning, peoples r china;xpeng@imr.ac.cn
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| 关键词 | Austenitic Steel
Dc Magnetron Sputtering
Grain Refining
Nanocrystalline
Oxidation
Oxide hydrOxide Evaporation
High-temperature Oxidation
Fe-cr Alloys
Water-vapor
Stainless-steels
Chromium Evaporation
Model Alloys
Thin-films
Diffusion
Behavior
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| URL | 查看原文
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| WOS记录号 | WOS:000232859000012
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/35001
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
X. Peng,J. Yan,Y. Zhou,et al. Effect of grain refinement on the resistance of 304 stainless steel to breakaway oxidation in wet air[J]. Acta Materialia,2005,53(19):5079-5088.
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| APA |
X. Peng,J. Yan,Y. Zhou,&F. Wang.(2005).Effect of grain refinement on the resistance of 304 stainless steel to breakaway oxidation in wet air.Acta Materialia,53(19),5079-5088.
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| MLA |
X. Peng,et al."Effect of grain refinement on the resistance of 304 stainless steel to breakaway oxidation in wet air".Acta Materialia 53.19(2005):5079-5088.
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