Improving the strength and ductility of reduced activation ferritic/martensitic steel by cold-swaging and post-annealing

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	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
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	631 页码:139-143
摘要	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.
部门归属	[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
关键词	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
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73772
专题	中国科学院金属研究所
推荐引用方式 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.