通过差分方法，对在位错弯结气团模型的基础上推导出来的溶质原子在位错芯区内的纵向扩散方程，进行了数值求解，由此计算出了与Ｐ′１峰相应的内耗和横量亏损随温度和振幅的变化曲线．数值计算得到的内耗曲线与以前的实验曲线，无论在外观形态上，还是在移动规律上，都完全一样．这样就从定量上解释了Ｐ′１峰 Based on the differential method, the longitudinal diffusion equation of solute atoms in the dislocation core region deduced on the basis of the dislocation bended air mass model is numerically solved, and the internal friction corresponding to the P’1 peak is calculated Horizontal loss curve with temperature and amplitude. The numerical calculation of the internal friction curve and the previous experimental curve, both in appearance and morphology, or in the law of movement, are exactly the same. This quantitatively explains the P’1 peak