Mechanical Properties and Temper Resistance of Deformation Induced Ferrite in a Low Carbon Steel

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	Mechanical Properties and Temper Resistance of Deformation Induced Ferrite in a Low Carbon Steel
	L. H. Hao; N. M. Xiao; C. W. Zheng; D. Z. Li
	2010
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	26 期号:12 页码:1107-1113
摘要	The microstructures and mechanical properties of deformation induced ferrite (DIF) in the low carbon steel Q235 under different deformation temperatures have been investigated systematically. Through deformation induced ferrite transformation (DIFT), ferrite grain can be refined to 3 mu m and accounts for above 85% of the overall fraction. Yield strength of DIF (>500 MPa) is increased by up to 100% compared with the conventional low carbon steel. Comparison of microstructure and mechanical properties in the Q235 steel with DIF and tempered DIF microstructure illustrates that the strengthening mechanism of DIF microstructure is the combination of grain boundary strengthening and carbon supersaturated strengthening. Electron back-scattered diffraction (EBSD) analysis and high magnification scanning electron microscopy (SEM) observation denote that high-angle grain boundary among ultrafine ferrite grain and the transformation product of retain austenite membrane along ferrite boundaries are responsible for the stability of ferrite grain size during tempering process. Transmission electron microscopy (TEM) analysis demonstrates that the transformation product of retained austenite membrane between ferrite grain boundaries is cementite.
部门归属	[hao, luhan; xiao, namin; zheng, chengwu; li, dianzhong] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;li, dz (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china;dzli@imr.ac.cn
关键词	Low Carbon Steel Deformation Induced Ferrite Transformation Grain Size Mechanical Properties Temper Resistance Ultrafine-grained Steels Strain Microstructures Transformation Stability Strength
URL	查看原文
WOS记录号	WOS:000286153900009
引用统计	被引频次：12[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/321006/31138
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. H. Hao,N. M. Xiao,C. W. Zheng,et al. Mechanical Properties and Temper Resistance of Deformation Induced Ferrite in a Low Carbon Steel[J]. Journal of Materials Science & Technology,2010,26(12):1107-1113.
APA	L. H. Hao,N. M. Xiao,C. W. Zheng,&D. Z. Li.(2010).Mechanical Properties and Temper Resistance of Deformation Induced Ferrite in a Low Carbon Steel.Journal of Materials Science & Technology,26(12),1107-1113.
MLA	L. H. Hao,et al."Mechanical Properties and Temper Resistance of Deformation Induced Ferrite in a Low Carbon Steel".Journal of Materials Science & Technology 26.12(2010):1107-1113.