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

doi:10.1016/j.msea.2016.04.098

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院固体物理研究所

	Enhancement effect of inter-pass annealing during equal channel angular pressing on grain refinement and ductility of 9Cr1Mo steel
	Hao, Ting 1; Tangi, Haiyin 1; Luo, Guangnan 2; Wang, Xianping 1; Liu, Changsong1 ; Fang, Qianfeng1
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	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
DOI	10.1016/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)
内容类型	期刊论文
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.