Microstructural evolution of submicron sized ferrite in bimodal structural ultrafine grained ferrite/cementite steels by annealing below austenized temperature

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	Microstructural evolution of submicron sized ferrite in bimodal structural ultrafine grained ferrite/cementite steels by annealing below austenized temperature
	M. C. Zhao; T. Hanamura; H. Qiu; K. Yang
	2006
发表期刊	Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
ISSN	1073-5623
卷号	37A 期号:5 页码:1657-1664
摘要	The microstructural evolution of submicron sized ferrite in bimodal structural ultrafine grained ferrite/cementite steels with 0.15 pct carbon content and 0.45 pct carbon content upon annealing below the austenized temperature was investigated. The average grain sizes of the ferrites with a normal density and with a high density of cementite particles were plotted, respectively, as a function of the annealed temperature and time, and exhibited different coarsening behaviors. The average grain sizes of the ferrites with a normal density of cementite particles gradually coarsened by increasing the annealing temperature or time, while those with a high density of cementite particles hardly changed at first, and then coarsened after reaching a certain annealing condition. The coarsening of the ferrite grain size in the steel with 0.15 pet carbon content occurred much more readily than that in the steel with 0.45 pet carbon content upon annealing. The spacing and the critical spacing of cementite particle were measured and hypothetically calculated, respectively. The size and the distribution of cementite particles was one of the critical factors affecting the microstructural evolution in this type of cementite particle spherodized steels. Most of the coarsening of the ferrite grain size occurred after the cementite particle spacing reached the required critical value.
部门归属	natl inst mat sci, steel res ctr, tsukuba, ibaraki 3050047, japan. chinese acad sci, inst met res, shenyang 110016, peoples r china.;zhao, mc (reprint author), natl inst mat sci, steel res ctr, tsukuba, ibaraki 3050047, japan;mczhao@imr.ac.cu
关键词	Cementite Particles Warm Deformation Lath Martensite Recrystallization Texture Growth
URL	查看原文
WOS记录号	WOS:000237617900027
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34740
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. C. Zhao,T. Hanamura,H. Qiu,et al. Microstructural evolution of submicron sized ferrite in bimodal structural ultrafine grained ferrite/cementite steels by annealing below austenized temperature[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2006,37A(5):1657-1664.
APA	M. C. Zhao,T. Hanamura,H. Qiu,&K. Yang.(2006).Microstructural evolution of submicron sized ferrite in bimodal structural ultrafine grained ferrite/cementite steels by annealing below austenized temperature.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,37A(5),1657-1664.
MLA	M. C. Zhao,et al."Microstructural evolution of submicron sized ferrite in bimodal structural ultrafine grained ferrite/cementite steels by annealing below austenized temperature".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 37A.5(2006):1657-1664.