CAJ | 학술논문

基于最新的实验热力学数据和相图数据,采用CALPHAD技术对Fe-P体系进行热力学再优化.其中,溶液相(液相、α-Fe和γ-Fe)的Gibbs自由能用替换溶液模型描述,其余化合物(Fe3P、Fe2P、FeP、FeP2和FeP4)看作严格计量比化合物.整个优化过程在Thermo-Calc(R)软件包中完成,优化所得热力学数据和相图信息与实验信息吻合较好,为Fe基合金和含P多元合金体系的进一步优化提供了一组自洽可靠的热力学参数.
기우최신적실험열역학수거화상도수거,채용CALPHAD기술대Fe-P체계진행열역학재우화.기중,용액상(액상、α-Fe화γ-Fe)적Gibbs자유능용체환용액모형묘술,기여화합물(Fe3P、Fe2P、FeP、FeP2화FeP4)간작엄격계량비화합물.정개우화과정재Thermo-Calc(R)연건포중완성,우화소득열역학수거화상도신식여실험신식문합교호,위Fe기합금화함P다원합금체계적진일보우화제공료일조자흡가고적열역학삼수.
The Fe-P binary system was reoptimized by means of the CALPHAD approach.The Gibbs energy descriptions of every phase in the Fe-P binary system were optimized based on the latest experimental thermodynamic and phase diagram data.The solution phase (liquid,α-Fe,and γ-Fe) was described by the substitutional solution approximation and the other phases (Fe3P,Fe2P,FeP,FeP2,and FeP4) were treated as the stoichiometric compounds.The optimization was carried out using the Thermo-Calc(R) software package.The agreement of the optimized phase diagram and thermodynamic data with experimental results is good,and a self-consistent and reliable thermodynamic dataset is obtained to allow further optimization of Fe-based,P-containing multicomponent alloy systems.