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采用放射性同位素技术测定了在渗~(14)C过程中~(14)C在不同量室温形变工业纯铁奥氏体中的扩散系数,并对渗层进行自射线照相。结果表明:形变30％能明显增大~(14)C在γ-Fe中的扩散系数,提高渗~(14)C速度;透射电镜分析结果表明形变30 ％能增大材料中的位错密度,促进~(14)C的扩散过程。
The diffusion coefficient of ~ (14) C in austenite of industrial ferrite with different amount of room temperature during infiltration ~ (14) C was measured by radioisotope technique, and self-radiography was performed on the infiltrated layer. The results show that 30% deformation can significantly increase the diffusion coefficient of ~ (14) C in γ-Fe and increase the permeation rate of ~ (14) C. Transmission electron microscopy results show that 30% deformation can increase the dislocation density , Promote ~ (14) C diffusion process.