| Improving the strength and ductility of reduced activation ferritic/martensitic steel by cold-swaging and post-annealing | |
| S. H.; Jin Chen, X. J.; Rong, L. J. | |
| 2015 | |
| Source Publication | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| ISSN | 0921-5093 |
| Volume | 631Pages:139-143 |
| Abstract | A new process to produce ultrafine-grained reduced activation ferritic/martensitic steel was developed by cold-swaging and post-annealing. Microstructural examinations showed that the martensitic structures were broken into subgrain structures, and the rod-like carbides were fragmented after cold-swaging process with the cumulative strain of similar to 2.8. The tensile strength significantly increased accompanied by a reduction in the ductility in the cold-swaged samples, which was due to the insufficient strain hardening ability. After post-annealing at 973 K, a stable ultrafine-grained structure with uniformly distributed nanoprecipitates was obtained. The presence of uniformly distributed nanoprecipitates not only provided an effective precipitation strengthening but also improved the strain hardening ability, resulting in higher strength and better ductility than their as-tempered counterparts. (C) 2015 Elsevier B.V. All rights reserved. |
| description.department | [chen, shenghu ; jin, xiaojie ; rong, lijian] chinese acad sci, inst met res, key lab nucl mat & safety assessment, shenyang 110016, peoples r china. ; chen, sh (reprint author), chinese acad sci, inst met res, key lab nucl mat & safety assessment, 72 wenhua rd, shenyang 110016, peoples r china. ; chensh@imr.ac.cn |
| Keyword | Cold-swaging Ferritic/martensitic Steel Mechanical Property Ultrafine-grained Structure Nanoprecipitates Severe Plastic-deformation Mechanical-properties T91 Steel Nanostructured Metals Materials Challenges Tensile Ductility High-temperature Microstructure Behavior Alloys |
| URL | 查看原文 |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/73772 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | S. H.,Jin Chen, X. J.,Rong, L. J.. Improving the strength and ductility of reduced activation ferritic/martensitic steel by cold-swaging and post-annealing[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2015,631:139-143. |
| APA | S. H.,Jin Chen, X. J.,&Rong, L. J..(2015).Improving the strength and ductility of reduced activation ferritic/martensitic steel by cold-swaging and post-annealing.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,631,139-143. |
| MLA | S. H.,et al."Improving the strength and ductility of reduced activation ferritic/martensitic steel by cold-swaging and post-annealing".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 631(2015):139-143. |
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