발간논문

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Vol.33, No.6, 766 ~ 776, 1995
Title
Thermodynamic Calculations in Stainless Steels Alloy Systems
이병주 Byeong Joo Lee
Abstract
A thermodynamic description of the Fe-Cr-Ni-Mo-Mn-Si-C-N system (basic stainless steel system) has been obtained by the use of thermodynamic models for the Gibbs energy of individual phases. Thermodynamic calculations enabled evaluation and prediction of phase equilibria and phase stabilities in alloy steels. The α/γ equilibria in duplex stainless steels, solubilities of M_(23)C_6 in austenitic steels stainless and liquidus and solidus temperatures in various types of steels were calculated and compared with experimentally reported data. It was concluded that the present thermodynamic description can be used in predicting phase equilibria in stainless steels systems where no experimental data is available and can give fundamental information for allay design of new steels. Some technical approach methods were presented in order to relate thermodynamic calculations with phase transformations which are governed by kinetics as well as thermodynamics.
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