第一作者：李阳
通讯作者：李花兵
合写作者：杜鹏飞,姜周华,姚聪林,白璐,王琦,徐光,陈常勇,张磊
发表刊物：International Journal of Minerals, Metallurgy and Materials
期号：11
卷号：26
影响因子：5.6
DOI码：10.1007/s12613-019-1845-2
所属单位：东北大学冶金学院
教研室：绿色智能特殊钢冶金研究中心
摘要：The 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.
关键字：acicular ferritedislocation densitystainless steelTiC grain refineroxide metallurgy
论文类型：SCI
备注：无
学科门类：工学
一级学科：冶金工程
页面范围：1385-1395
ISSN号：1674-4799
是否译文：否