Effect of Oxide Particles on Ferrite Phase Transformation in Low Carbon Micro-alloyed Steels

The mechanism of ferrite nucleation induced by different oxide particles was studied in this article. The inclusion insertion experiment as a simulated experiment was carried out using different oxide powders on a thermal simulator under certain heat treatment conditions. The main results showed tha...

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Bibliographic Details
Published in:Transactions of the Indian Institute of Metals 2021-12, Vol.74 (12), p.3227-3240
Main Authors: Yang, Yulong, Jia, Xiao, Ma, Yaxin, Zhang, Si, Wang, Ping
Format: Article
Language:English
Subjects:
Alloying
Carbon
Chemistry and Materials Science
Conduction heating
Conductive heat transfer
Corrosion and Coatings
Diffusion
Ferrite
Heat treatment
High strength low alloy steels
Inclusions
Low carbon steels
Materials Science
Metallic Materials
Nucleation
Original Article
Phase transitions
Solid phases
Thermal simulation
Thermal simulators
Thermodynamic properties
Tribology
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Summary:The mechanism of ferrite nucleation induced by different oxide particles was studied in this article. The inclusion insertion experiment as a simulated experiment was carried out using different oxide powders on a thermal simulator under certain heat treatment conditions. The main results showed that the chemical influences of oxide particles on ferrite nucleation are difficult to occur under solid-phase transformation conditions. The change of microstructure near the oxide particles may be related to the effect of thermal properties of oxide particles. Heat conduction performance of oxide particles may cause slower heat dissipation around the oxide particles, resulting in the variation of temperature gradient near the oxide particles. This temperature gradient may lead to the increasing diffusion of carbon atoms, which increases the driving force of ferrite nucleation and growth. The effect of thermal properties of oxide particles on ferrite phase transformation seems to provide a new insight for the study of the mechanism of acicular ferrite nucleation induced by inclusions in low carbon steels.
ISSN:0972-2815
0975-1645
DOI:10.1007/s12666-021-02393-5