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Enhancement effect of inter-pass annealing during equal channel angular pressing on grain refinement and ductility of 9Cr1Mo steel

文献类型：期刊论文

作者Hao, Ting1; Tangi, Haiyin1; Luo, Guangnan2; Wang, Xianping1; Liu, Changsong1; Fang, Qianfeng1
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2016-06-14
卷号667期号:无页码:454-458
关键词Strength Ductility Equal-channel Angular Pressing (Ecap) Grain Refinement Dislocation Density
DOI10.1016/j.msea.2016.04.098
文献子类Article
英文摘要To obtain enhanced mechanical property in both the strength and the ductility, 9Cr1Mo steel (T91) was severely deformed by equal channel angular pressing (ECAP) combined with an additional inter-pass annealing. Tensile results show that the additional inter-pass annealing can significantly improve the ductility (i.e. 18% of the total elongation after four-pass extrusion with the inter-pass annealing) but slightly decrease the tensile strength comparing with the case without the inter-pass annealing (i.e. 10% of the total elongation after four-pass ECAP processing). The average grain size of the two passes ECAP-processed materials with the inter-pass annealing (similar to 0.8 mu m) is smaller than that of the sample without inter-pass annealing (similar to 2 mu m), and the fraction of the high angle grain boundaries in the samples with the inter-pass annealing (similar to 40%) is higher than that of similar to 34% (two-pass ECAP) without the inter-pass annealing based on electron backscattering diffraction analysis. The crystallite size and dislocation density were evaluated by means of the modified Williamson-Hall plot based on X-ray diffraction analysis. The microstructural analysis indicates that the enhanced ductility of the ECAP processed and inter pass annealed materials can be attributed to the relatively smaller grain sizes, larger crystallite sizes and lower dislocation densities. (c) 2016 Elsevier B.V. All rights reserved.
WOS关键词LINE-PROFILE ANALYSIS ; AUSTENITIC STAINLESS-STEEL ; TENSILE DUCTILITY ; MG ALLOY ; STRENGTH ; NANOCRYSTALLINE ; DEFORMATION ; ECAP ; MICROSTRUCTURE ; TEMPERATURE
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000378183800052
资助机构National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231) ; National Natural Science Foundation of China(11575231)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/22064]  
专题合肥物质科学研究院_中科院固体物理研究所
合肥物质科学研究院_中科院等离子体物理研究所
作者单位1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, POB 1129, Hefei 230031, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, POB 1126, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Hao, Ting,Tangi, Haiyin,Luo, Guangnan,et al. Enhancement effect of inter-pass annealing during equal channel angular pressing on grain refinement and ductility of 9Cr1Mo steel[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2016,667(无):454-458.
APA Hao, Ting,Tangi, Haiyin,Luo, Guangnan,Wang, Xianping,Liu, Changsong,&Fang, Qianfeng.(2016).Enhancement effect of inter-pass annealing during equal channel angular pressing on grain refinement and ductility of 9Cr1Mo steel.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,667(无),454-458.
MLA Hao, Ting,et al."Enhancement effect of inter-pass annealing during equal channel angular pressing on grain refinement and ductility of 9Cr1Mo steel".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 667.无(2016):454-458.

入库方式： OAI收割

来源：合肥物质科学研究院

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