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本文提出了一种确定晶界非平衡偏聚的临界时间和临界冷却速度的新方法。通过径迹显微照相(PTA),确定出含硼的Fe-30wt％Ni奥氏体合金中硼的晶界非平衡偏聚在不同温度下的临界时间t_0和从不同温度冷却时的临界冷却速度Q_c。
This paper presents a new method to determine the critical time and critical cooling rate for the unbalanced segregation at grain boundaries. By means of track photomicrography (PTA), the critical time of non-equilibrium segregation of boron in austenitic boron-containing Fe-30wt% Ni austenite grain boundaries at different temperatures t_0 and the critical cooling from different temperatures were determined Speed Q_c.