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CHANG Heming , DU Ting , YU Jingsheng , Central Iron and Steel Research Institute , Ministry of Metallurgical Industry , Beijing , China
金属学报(英文版)
Thermodynamic properties of the Fe-V-Ce liquid solutions have been studied in the tempera- ture range of 1550-1650℃. The temperature dependences of the equilibrium constants of re- action Ce_2O_2S = 2[Ce]+2[O]+[S] and the standard free energy of formation of Ce_2O_2S have been obtained. The temperature dependences of the interaction coefficients e_v~(Ce) and e_(Ce)~v have also been determined.
关键词: Fe-V-Ce system , null , null
YU Jingsheng , YU Zongsen , WU Chengjian Ministry of Metallurgical Industry , China. Beijing University of Iron and Steel Technology.
材料科学技术（英文）
This review paper outlines recent progress in the application of rare earth metals (RE) in steel to improve the mechanical properties of steel. It includes: the physical chemistry of RE in steel; comparison of the application of RE and Ca in steel; the ways of adding RE into steel and nozzle blockage; the solid solubi- lity limit of RE in Fe and the amount of RE soluble in steel; the segregation of RE on grain boundaries of steel and its reaction with other elements; the effect of RE on the structure and mechanical properties of steels; the reaction of RE with H in steel.
关键词: rare earths , null , null , null
