Grain size effects on the austenitization process in a nanostructured ferritic steel
文献类型：期刊论文
| 作者 | L. M. Wang ; Z. B. Wang ; K. Lu |
| 刊名 | Acta Materialia
 |
| 出版日期 | 2011 |
| 卷号 | 59期号:9页码:3710-3719 |
| 关键词 | Nanostructured Surface mechanical attrition treatment Ferritic steel Grain size effects Austenitization process mechanical attrition treatment severe plastic-deformation phase-transformation martensitic steel carbon-steel nanocrystalline materials nanometer-scale surface-layer tool steel refinement |
| ISSN号 | 1359-6454 |
| 中文摘要 | A surface layer with a depth-dependent microstructure was produced on a ferritic steel (P92) plate by means of surface mechanical attrition treatment (SMAT). The austenitization processes of ferrite and carbides in the surface layers with different average grain sizes were investigated by means of in situ X-ray diffraction, differential scanning calorimetry and transmission electron microscopy. Experimental results showed that the onset temperature of the austenitization process decreases gradually with decreasing sizes of ferrite grains and carbide particles, being similar to 120 K lower in the top SMAT surface layer compared with that in the original sample. In addition, the two-step austenitization process in the surface layers becomes a one-step one when the mean size of carbide particles is smaller than 20 nm. The effects of microstructure refinement on the accelerated austenitization processes were discussed in terms of thermodynamic and kinetic. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30731]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | L. M. Wang,Z. B. Wang,K. Lu. Grain size effects on the austenitization process in a nanostructured ferritic steel[J]. Acta Materialia,2011,59(9):3710-3719. |
| APA | L. M. Wang,Z. B. Wang,&K. Lu.(2011).Grain size effects on the austenitization process in a nanostructured ferritic steel.Acta Materialia,59(9),3710-3719. |
| MLA | L. M. Wang,et al."Grain size effects on the austenitization process in a nanostructured ferritic steel".Acta Materialia 59.9(2011):3710-3719. |
入库方式： OAI收割
来源：金属研究所
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