Microstructure and annealing behavior of a modified 9Cr-1Mo steel after dynamic plastic deformation to different strains

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	Microstructure and annealing behavior of a modified 9Cr-1Mo steel after dynamic plastic deformation to different strains
	Z. B.; Mishin Zhang, O. V.; Tao, N. R.; Pantleon, W.
	2015
发表期刊	Journal of Nuclear Materials
ISSN	0022-3115
卷号	458 页码:64-69
摘要	The microstructure, hardness and tensile properties of a modified 9Cr-1Mo steel processed by dynamic plastic deformation (DPD) to different strains (0.5 and 2.3) have been investigated in the as-deformed and annealed conditions. It is found that significant structural refinement and a high level of strength can be achieved by DPD to a strain of 2.3, and that the microstructure at this strain contains a large fraction of high angle boundaries. The ductility of the DPD processed steel is however low. Considerable structural coarsening of the deformed microstructure without pronounced recrystallization takes place during annealing of the low-strain and high-strain samples for 1 h at 650 degrees C and 600 degrees C, respectively. Both coarsening and partial recrystallization occur in the high-strain sample during annealing at 650 degrees C for 1 h. For this sample, it is found that whereas coarsening alone results in a loss of strength with only a small gain in ductility, coarsening combined with pronounced partial recrystallization enables a combination of appreciably increased ductility and comparatively high strength. (C) 2014 Elsevier B.V. All rights reserved.
部门归属	[zhang, z. b. ; mishin, o. v.] tech univ denmark, danish chinese ctr nanometals, sect mat sci & adv characterizat, dept wind energy, dk-4000 roskilde, denmark. [tao, n. r.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [pantleon, w.] tech univ denmark, dept mech engn, sect mat & surface engn, dk-2800 lyngby, denmark. [zhang, z. b. ; mishin, o. v. ; tao, n. r. ; pantleon, w.] sinodanish ctr educ & res, beijing, peoples r china. [zhang, z. b. ; mishin, o. v. ; tao, n. r. ; pantleon, w.] sinodanish ctr educ & res, beijing, peoples r china. ; pantleon, w (reprint author), tech univ denmark, dept mech engn, sect mat & surface engn, produktionstorvet 425, dk-2800 lyngby, denmark. ; pawo@dtu.dk
关键词	Mechanical-properties Martensitic Steels Deformed Metals Temperature Recrystallization Irradiation Defects Grain
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74030
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. B.,Mishin Zhang, O. V.,Tao, N. R.,et al. Microstructure and annealing behavior of a modified 9Cr-1Mo steel after dynamic plastic deformation to different strains[J]. Journal of Nuclear Materials,2015,458:64-69.
APA	Z. B.,Mishin Zhang, O. V.,Tao, N. R.,&Pantleon, W..(2015).Microstructure and annealing behavior of a modified 9Cr-1Mo steel after dynamic plastic deformation to different strains.Journal of Nuclear Materials,458,64-69.
MLA	Z. B.,et al."Microstructure and annealing behavior of a modified 9Cr-1Mo steel after dynamic plastic deformation to different strains".Journal of Nuclear Materials 458(2015):64-69.