Enhancement of mechanical properties of heat-resistant martensitic steel processed by equal channel angular pressing
文献类型：期刊论文
| 作者 | G. Yang ; C. X. Huang ; C. Wang ; L. Y. Zhang ; C. Hu ; Z. F. Zhang ; S. D. Wu |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2009 |
| 卷号 | 515期号:1-2页码:199-206 |
| 关键词 | Heat-resistant martensitic steel ECAP Microstructural refinement Nano-precipitate Tensile strength Ductility low-carbon-steel severe plastic-deformation strain-hardening behavior warm deformation tensile ductility grain-refinement alloy microstructure al cu |
| ISSN号 | 0921-5093 |
| 中文摘要 | The microstructures and tensile properties of a commercial heat-resistant martensitic steel processed by equal channel angular pressing (ECAP) for one pass and subsequent ageing treatment were investigated. Both optical and TEM examinations showed that many martensite laths had been broken into dislocation cells and subgrains after ECAP deformation. At the same time, the fragmentation of rod-shaped precipitates was also observed and the distribution of precipitation was more uniform than that in the as-received sample. After ageing in the temperature range of 640-720 degrees C for 2 h, dislocation recovery took place resulting in the decrease of dislocation density and formation of many ultrafine grains with sizes of several hundred of nanometers, and spherical particles that were uniformly dispersed in the matrix of fine subgrains/grains. By ECAP deformation and subsequent ageing treatment, a simultaneous increase in both strength and toughness was achieved, compared with those of as-received state. The enhancement of tensile properties was attributed to microstructural refinement and uniform distribution of precipitates. (C) 2009 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32483]  |
| 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 | G. Yang,C. X. Huang,C. Wang,et al. Enhancement of mechanical properties of heat-resistant martensitic steel processed by equal channel angular pressing[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2009,515(1-2):199-206. |
| APA | G. Yang.,C. X. Huang.,C. Wang.,L. Y. Zhang.,C. Hu.,...&S. D. Wu.(2009).Enhancement of mechanical properties of heat-resistant martensitic steel processed by equal channel angular pressing.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,515(1-2),199-206. |
| MLA | G. Yang,et al."Enhancement of mechanical properties of heat-resistant martensitic steel processed by equal channel angular pressing".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 515.1-2(2009):199-206. |
入库方式： OAI收割
来源：金属研究所
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