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Metallurgical and Materials Transactions A

, Volume 49, Issue 11, pp 5271–5276 | Cite as

The Influence of Rare Earth Elements on Phase Transformation in 25Mn Steel During Continuous Heating

  • Honghong Yan
  • Yong Hu
  • Dawen Zhao
Article
  • 73 Downloads

Abstract

The influence of rare earth elements on continuous heating transformation of 25Mn steel was investigated by using differential scanning calorimetry combined with microstructure analysis. The transformation kinetics were obtained from experiment results and the Kissinger equation. It was found that the addition of 0.3 pct (mass fraction) rare earth ferrosilicon alloy resulted in an increase in the values of austenite onset temperature (Ac1) and austenite finish temperature (Ac3), and the phase transformation activation energy increased by 149 kJ/mol. At the same time, for the modified 25Mn steel, the microstructure and the impact toughness were improved.

Notes

Acknowledgments

This work was supported by the National Natural Science Foundation of China (Grant No. 51405325) and PhD Research Startup Foundation of Taiyuan University of Science and Technology (Grant No. 20162024).

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2018

Authors and Affiliations

  1. 1.School of Mechanical EngineeringTaiyuan University of Science and TechnologyTaiyuanChina
  2. 2.School of Materials Science and EngineeringTaiyuan University of Science and TechnologyTaiyuanChina

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