Effect of austenitizing temperature on microstructure in 16Mn steel treated by cerium

Bin Wen; Bo Song; Ning Pan; Qing-yun Hu; Jing-hong Mao

doi:10.1007/s12613-011-0491-0

Volume 18 Issue 6

Dec. 2011

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文章导航 > 矿物冶金与材料学报（英文） > 2011 > 18(6): 652-658

Bin Wen, Bo Song, Ning Pan, Qing-yun Hu, and Jing-hong Mao, Effect of austenitizing temperature on microstructure in 16Mn steel treated by cerium, Int. J. Miner. Metall. Mater., 18(2011), No. 6, pp. 652-658. https://doi.org/10.1007/s12613-011-0491-0

Cite this article as:

Bin Wen, Bo Song, Ning Pan, Qing-yun Hu, and Jing-hong Mao, Effect of austenitizing temperature on microstructure in 16Mn steel treated by cerium, Int. J. Miner. Metall. Mater., 18(2011), No. 6, pp. 652-658. https://doi.org/10.1007/s12613-011-0491-0

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Effect of austenitizing temperature on microstructure in 16Mn steel treated by cerium

State Key Lab of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China

通讯作者:
Bo Song E-mail: songbo@metall.ustb.edu.cn

中文摘要

The change of inclusions and microstructure of 16Mn steel treated by Ce were observed, and the effect of austenitizing temperature on the microstructure was also examined. The results show that the inclusions are transformed from Si-Mn-Al composite oxide and MnS into AlCeO₃, Ce₂O₂S, and MnS composite inclusions after being treated by Ce. Plenty of intragranular ferrites are formed in 16Mn steel containing ∼0.017wt% Ce. A large amount of intragranular acicular ferrites are formed after being austenitized for 20 min at 1473 K. The prior austenite grain size fit for the formation of intragranular acicular ferrites is about 120 μm.

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Effect of austenitizing temperature on microstructure in 16Mn steel treated by cerium

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Abstract

Abstract

The change of inclusions and microstructure of 16Mn steel treated by Ce were observed, and the effect of austenitizing temperature on the microstructure was also examined. The results show that the inclusions are transformed from Si-Mn-Al composite oxide and MnS into AlCeO₃, Ce₂O₂S, and MnS composite inclusions after being treated by Ce. Plenty of intragranular ferrites are formed in 16Mn steel containing ∼0.017wt% Ce. A large amount of intragranular acicular ferrites are formed after being austenitized for 20 min at 1473 K. The prior austenite grain size fit for the formation of intragranular acicular ferrites is about 120 μm.
- steel metallurgy;
- inclusions;
- ferrite;
- austenite;
- grain size