Formation mechanism and annealing behavior of nanocrystalline ferrite in pure Fe fabricated by ball milling

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	Formation mechanism and annealing behavior of nanocrystalline ferrite in pure Fe fabricated by ball milling
	J. Yin; M. Umemoto; Z. G. Liu; K. Tsuchiya
	2001
发表期刊	Isij International
ISSN	0915-1559
卷号	41 期号:11 页码:1389-1396
摘要	Nanocrystalline ferrite formation by ball milling in pure Fe (0.004 mass% C) has been studied through morphology observation and microhardness measurements. It was found that nano-ferrite first formed at the outer surface area in the powders at the early stage of ball milling, which was attributed to the deformation localization. The boundaries between the nano-ferrite and work-hardened regions are quite clear under SEM and the hardness of nano-ferrite region is more than 3 GPa higher than that of the work-hardened region. Further milling led to the particle refinement and formation of nano-ferrite of the whole particles. It has been suggested that the nanocrystalline ferrite formed through a transition from dislocation cell wall created by work hardening during ball milling to grain boundary, which is regarded to contribute to the hardness gap between the work hardened structure and the nanocrystalline ferrite. A relatively high stability against temperature was observed in the nano-ferrite formed by ball milling. The irregular grain boundaries of nano-ferrite annealed at high temperature was attributed to that the grain growth of nanocrystalline ferrite takes place by coalescence of neighboring grains.
部门归属	chinese acad sci, inst met res, shenyang 110015, peoples r china. toyohashi univ technol, dept prod syst engn, toyohashi, aichi 4418580, japan.;yin, j (reprint author), chinese acad sci, inst met res, 72 wenhua rd, shenyang 110015, peoples r china
关键词	Nanocrystalline Ferrite Pure Fe Ball Milling Heavy Deformation Structure Bonding Arb Process Dislocation Density Attrition Iron Energy Size
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WOS记录号	WOS:000172283600013
引用统计	被引频次：66[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/321006/36881
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Yin,M. Umemoto,Z. G. Liu,et al. Formation mechanism and annealing behavior of nanocrystalline ferrite in pure Fe fabricated by ball milling[J]. Isij International,2001,41(11):1389-1396.
APA	J. Yin,M. Umemoto,Z. G. Liu,&K. Tsuchiya.(2001).Formation mechanism and annealing behavior of nanocrystalline ferrite in pure Fe fabricated by ball milling.Isij International,41(11),1389-1396.
MLA	J. Yin,et al."Formation mechanism and annealing behavior of nanocrystalline ferrite in pure Fe fabricated by ball milling".Isij International 41.11(2001):1389-1396.