Preliminary communication

The activation energy determination in non-isothermal conditions for the solid-state phase transformation of 1035 steel

G. L. Tan ; Department of materials science and engineering, Yingkou Institute of Technology, Liaoning, China
D. Tang ; Department of materials science and engineering, Yingkou Institute of Technology, Liaoning, China
X. T. Yin ; School of materials and metallurgy, University, Liaoning, China
T. Mu ; Department of materials science and engineering, Yingkou Institute of Technology, Liaoning, China
D. Wang ; School of materials and metallurgy, University, Liaoning, China
C. J. Xu ; School of materials and metallurgy, University, Liaoning, China

Abstract

The activation energy of solid-state phase transformation for the steel has been evaluated by the isoconversional method. It is demonstrated that the linear fitting is a mathematically invalid procedure that generally invalidates the isoconversional method. As an alternative, we apply the advanced isoconversional method that can be used to determine the activation energy of solid-state phase transformation of 1035 steel. The activation energy determined by this method varies with the transformed phase fraction. The variation of the activation energy was interpreted by the nucleation and growth model. It is shown that the advanced isoconversional method can be recommended as a trustworthy way of determining the activation energy of solid-state phase transformation of 1035 steel.

Keywords

steel; the activation energy; solid-state; non-isothermal; phase transformation

Hrčak ID:

237032

URI

https://hrcak.srce.hr/237032

Publication date:

1.7.2020.

Visits: 1.142 *