Effects of TiC on the microstructure and formation of acicular ferrite in ferritic stainless steel

IMR OpenIR

	Effects of TiC on the microstructure and formation of acicular ferrite in ferritic stainless steel
	Li Yang; Du Pengfei; Jiang Zhouhua; Yao Conglin; Bai Lu; Wang Qi; Xu Guang; Chen Changyong; Zhang Lei; Li Huabing
	2019
发表期刊	INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
ISSN	1674-4799
卷号	26 期号:11 页码:1385-1395
摘要	kThe formation mechanism of acicular ferrite and its microstructural characteristics in 430 ferrite stainless steel with TiC additions were studied by theory and experiment. Using an "edge-to-edge matching" model, a 5.25 mismatch between TiC (FCC structure) and fer-ritic stainless steel (BCC structure) was identified, which met the mismatch requirement for the heterogeneous nucleation of 430 ferritic stainless steel. TiC was found to be an effective nucleation site for the formation of acicular ferrite in a smelting experiment, as analyzed by metallographic examination, Image-Pro Plus 6.0 analysis software, and SEM-EDS. Furthermore, small inclusions in the size of 2-4 mu m increased the probability of acicular ferrite nucleation, and the secondary acicular ferrite would grow sympathetically from the initial acicular ferrite to produce multi-dimensional acicular ferrites. Moreover, the addition of TiC can increase the average microstrain and dislocation density of 430 ferrite stainless steel, as calculated by Williamson-Hall (WH) method, which could play some role in strengthening the dislocation.
关键词	NONMETALLIC INCLUSIONS CARBON-STEEL NUCLEATION TRANSFORMATION PRECIPITATION BEHAVIOR METALS acicular ferrite dislocation density stainless steel TiC grain refiner oxide metallurgy
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China]
CSCD记录号	CSCD:6618964
引用统计	被引频次：2[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/151409
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Li Yang,Du Pengfei,Jiang Zhouhua,et al. Effects of TiC on the microstructure and formation of acicular ferrite in ferritic stainless steel[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2019,26(11):1385-1395.
APA	Li Yang.,Du Pengfei.,Jiang Zhouhua.,Yao Conglin.,Bai Lu.,...&Li Huabing.(2019).Effects of TiC on the microstructure and formation of acicular ferrite in ferritic stainless steel.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,26(11),1385-1395.
MLA	Li Yang,et al."Effects of TiC on the microstructure and formation of acicular ferrite in ferritic stainless steel".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 26.11(2019):1385-1395.