Effect of inclusions on the formation of acicular ferrite in Ti-bearing non quenched-and-tempered steel

查看全文 作　　者：Ying [1,2]Yang;Chaobin [1,3]Lai;Fuming [1]Wang;Zhanbing [1]Yang;Bo [1]Song

机构地区：[1]Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China;[2]Technology Centre, Anshan Iron and Steel Group Corporation, Anshan 114009, China;[3]Technology Centre, Xinyu Iron and Steel Group, Xinyu 336501, China

出　　处：《Journal of University of Science and Technology Beijing》索引2007年第14卷第6期,共6页

基　　金：This work was financially supported by the National Natural Science Foundation of China (No.50574010);the National Doctor-ate Fund of the Ministry of Education of China (No.20060008015) 摘　　要：Nucleation of acicular ferrite and its influence factors in non quenched-and-tempered steel was studied by using TEM and thermodynamic calculation. The results show that the complex particles with a center made of Ti oxide, Al2O3, and silicate and an outside made of a small quantity of mixture of TiN and MnS are able to act as ferrite nucleation nuclei. The acicular ferrite percent- age changes little with Ti. When the oxygen content was 80 ppm, the volume percentage of acicular ferrite decreased due to an in- crease in allotriomorphic ferrite. The larger the cooling rate and the shorter the incubation time, the finer the titanium oxide and the higher the nucleation ratio of acicular ferrite. 关键词：铁氧体钛元素淬火回火技术

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Effect of inclusions on the formation of acicular ferrite in Ti-bearing non quenched-and-tempered steel

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