应用正电子湮没多普勒展宽技术研究了含不同稀土量的16Mn钢的回复过程。实验结果表明,稀土元素的存在使S参数迅速下降,这可能是由于稀土元素对间隙杂质原子的吸引减少了杂质原子对位错的封锁以及稀土对钢质的净化作用所致。在再结晶温度下,湮没特征表现为连续回复过程。 The positron annihilation Doppler broadening technique was used to study the recovery process of 16Mn steel with different rare earth contents. The experimental results show that the existence of rare earth elements to S parameters decreased rapidly, which may be due to rare earth elements on the interstitial atoms attracted to reduce the impurity atoms on the blockade of the dislocation and the role of rare earth purification of steel due. At the recrystallization temperature, the annihilation features show a continuous recovery process.