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采用径迹显微照相技术(PTA)研究了硼在Fe-30wt%Ni奥氏体合金中的分布。结果表明,该合金在650~950℃之间保温急冷时,存在着硼的晶界平衡偏聚,而在1050℃以上保温急冷时没有硼的偏聚。
The distribution of boron in Fe-30wt% Ni austenitic alloys was investigated by means of track photomicrography (PTA). The results show that when the alloy is quenched at a temperature of 650-950 ℃, there exists boron segregation in the grain boundary. When the alloy is quenched at 1050 ℃ or above, there is no segregation of boron.