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	Discussion on the nucleation rate of ferrite during continuous cooling in a lowcarbon steel measured by 3DXRD
	Yang, Zhi-Gang ; Enomoto, M.
	2010-05-10 ; 2010-05-10
会议名称	Solid-Solid Phase Transformations in Inorganic Materials 2005, Vol 1 ; International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM 2005) ; Phoenix, AZ ; Web of Science
关键词	nucleation rate ferrite transformation low carbon steel continuous cooling AUSTENITE GRAIN-BOUNDARIES OFFERMAN,S.E. ET-AL. 1003 NOVEMBER 1 C-X ALLOYS PHASE-TRANSFORMATIONS FE-C PROEUTECTOID FERRITE KINETICS GROWTH SCIENCE Metallurgy & Metallurgical Engineering
中文摘要	In a recently published paper [1] Offerman et al. conducted an in-situ observation of ferrite nucleation and growth kinetics during continuous cooling of a Fe-0.21%C-0.51%Mn-0.20%Si steel, using three-dimensional X-ray diffraction (3DXRD) microscopy. They concluded that the work for critical nucleus formation and the cube of the ferrite/austenite interfacial energy were orders of magnitude smaller than predicted by previous models. These results are reanalyzed in terms of rate-controlling diffusivity and nucleation sites (grain boundary faces, edges and corners), for example, using the pillbox critical nucleus model [2-4]. This analysis shows that earlier derived nucleus/matrix interfacial energies account reasonably well for the number of observed ferrite nuclei and very narrow undercoolings at which ferrite nucleation was discerned with the 3DXRD technique, assuming that a major proportion of ferrite particles are nucleated at grain corners.
会议录出版者	MINERALS, METALS & MATERIALS SOC ; WARRENDALE ; 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/18394]
专题	清华大学
推荐引用方式 GB/T 7714	Yang, Zhi-Gang,Enomoto, M.. Discussion on the nucleation rate of ferrite during continuous cooling in a lowcarbon steel measured by 3DXRD[C]. 见:Solid-Solid Phase Transformations in Inorganic Materials 2005, Vol 1, International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM 2005), Phoenix, AZ, Web of Science.

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