Estimation of probable maximum aspect ratio of MnS inclusions in non-quenched and tempered steel after isothermal compression

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外文摘要：To clarify the deformation behavior of MnS inclusions in a non-quenched and tempered steel at three different positions(edge,1/2 radius and center)in the cross-section of the billet in the course of hot rolling,isothermal compression experiments were performed under the deformation temperature range from 1073 to 1473 K,the reduction rates from 25％to 75％and the strain rates from 0.01 to 10 s-1.The variations of deformability features(i.e.,aspect ratios,size distri-butions,and morphologies)of MnS inclusions with those isothermal compression parameters were revealed.The evalu-ation of the probable maximum aspect ratio of MnS inclusions at the three different positions in the cross-section of the billet after hot rolling was examined using the statistical analysis of extreme values.Results showed that the number densities of MnS inclusions at three different positions(edge,1/2 radius and center)in the cross-section of the steel billet only fluctuated slightly when the deformation parameters varied in the isothermal compression,while the average inclusion aspect ratios in all cases generally have a negative correlation with the deformation temperature and positive correlations with the reduction ratio and the strain rate.Statistical analysis reveals that larger inclusions deform more easily during hot rolling.The effect of rolling temperature on the extreme value of the aspect ratio of inclusions is the smallest,while the effects of initial size,reduction ratio and strain rate are more significant.

外文关键词：

Non-quenched and tempered steelMnS inclusionProbable maximum aspect ratioIsothermal compression

作者：

Jun-yu Liu、Cheng-song Liu、Yong Wang、Hua Zhang、Rui-juan Bai、Wei Wang、Qing-bo Wang、Hong-wei Ni

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作者单位：

The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China

Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China

Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China

Henan Jiyuan Iron & Steel(Group)Co.,Ltd.,Jiyuan 459000,Henan,China

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出版年：

2024

DOI：

10.1007/s42243-024-01200-x

钢铁研究学报(英文版)

钢铁研究总院

钢铁研究学报(英文版)

CSTPCD

影响因子：0.584

ISSN：1006-706X

年,卷(期)：2024.31(11)