Thermodynamic behaviour of nitrogen in the carbon saturated Fe-Mn-Si alloy during casting

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2020-09-02
Major/Subject
Mcode
Degree programme
Language
en
Pages
7
Series
International Journal of Cast Metals Research
Abstract
The evolution of nitrogen gas formation in cast iron was studied based on the information of the N solubility in the carbon-saturated iron-containing Mn and Si over the wide temperature range. In order to verify the accuracy of the Fe-Mn-Si-C phase diagram, the transition temperatures of the Fe-Mn-2.7 wt%Si-Csat alloys were measured according to the Mn concentration using a differential scanning calorimetry under the purified Ar atmosphere. The recent thermodynamic modelling result of the Fe-Mn-Si-C-N system was used to describe the solubility limit of N in liquid and solid solution in the carbon saturated iron alloys. The cooling and quenching experiments were also carried out to check the effects of temperature and phase transformation on the N solubility limit in the temperature range from 500°C to 900°C.
Description
Keywords
nitrogen, defect, blowholes, grey cast iron, transition temperature, Fe-Mn-Si-C-N system
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Citation
Paek, M-K, Jeon, J & Lindberg, D 2020, ' Thermodynamic behaviour of nitrogen in the carbon saturated Fe-Mn-Si alloy during casting ', International Journal of Cast Metals Research, vol. 33, no. 4-5, pp. 226-232 . https://doi.org/10.1080/13640461.2020.1834176