Comparison of the characteristics of nanocrystalline ferrite in Fe-0.89C steels with pearlite and spheroidite structure produced by ball milling

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	Comparison of the characteristics of nanocrystalline ferrite in Fe-0.89C steels with pearlite and spheroidite structure produced by ball milling
	Xu, Y ; Umemoto, M ; Tsuchiya, K
通讯作者	Xu, Y()
	2002-09-01
发表期刊	MATERIALS TRANSACTIONS
ISSN	1345-9678
卷号	43 期号:9 页码:2205-2212
摘要	Nanocrystalline ferrite formation by ball milling in Fe-0.89C steels with initial pearlite and spheroidite microstructures and their annealing behaviors have been studied through microstructural observation and microhardness measurement. It was found that nanocrystalline ferrite first forms near the surface of powders due to localized severe deformation. The microhardness of nanocrystalline ferrite regions is much higher than that of work-hardening regions. The dissolution of cementite was observed together with the nanocrystallization of ferrite. The nanocrystallization rate of pearlite powder is faster than that of spheroidite powder due to higher work-hardening rate and smaller cementite size. After long time ball milling, the equiaxed nanocrystalline ferrite with less than 10 nm grain size forms in the whole powders of both pearlite and spheroidite structures, and the cementite dissolves completely. By annealing the milled pearlite and spheroidite powders, recrystallization was observed in the work-hardening regions, while continuous grain growth was observed in the nanocrystalline ferrite region. After annealing, microhardness of the former nanocrystalline ferrite region is always higher than that of the former work-hardening region when compared at the same annealing condition. The grain growth rate of nanocrystalline ferrite produced from pearlite structure is lower than that of spheroidite structure due to the finer grains.
关键词	ball milling pearlite spheroidite nanocrystalline ferrite deformation cementite dissolution annealing grain growth
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000178449800010
出版者	JAPAN INST METALS
引用统计	被引频次：40[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/321006/115270
专题	中国科学院金属研究所
通讯作者	Xu, Y
作者单位	1.Chinese Acad Sci, Met Res Inst, Shenyang 110015, Peoples R China 2.Toyohashi Univ Technol, Dept Prod Syst Engn, Toyohashi, Aichi 4418580, Japan
推荐引用方式 GB/T 7714	Xu, Y,Umemoto, M,Tsuchiya, K. Comparison of the characteristics of nanocrystalline ferrite in Fe-0.89C steels with pearlite and spheroidite structure produced by ball milling[J]. MATERIALS TRANSACTIONS,2002,43(9):2205-2212.
APA	Xu, Y,Umemoto, M,&Tsuchiya, K.(2002).Comparison of the characteristics of nanocrystalline ferrite in Fe-0.89C steels with pearlite and spheroidite structure produced by ball milling.MATERIALS TRANSACTIONS,43(9),2205-2212.
MLA	Xu, Y,et al."Comparison of the characteristics of nanocrystalline ferrite in Fe-0.89C steels with pearlite and spheroidite structure produced by ball milling".MATERIALS TRANSACTIONS 43.9(2002):2205-2212.