您当前的位置: > 详细浏览

The evolution of micro defects in He+ irradiated FeCrNi alloy during isochronal annealing

摘要:In order to study the microstructural evolution of the He+ irradiated FeCrNi model alloy, 140 keV He+ ions were implanted into the specimen with the fluence of 1015 ions/cm2 at room temperature. Positron Annihilation Spectroscopy was used to characterize the evolution of micro defects during isochronal annealing between 423 K and 873 K. The decrease of the S parameter between 573 K and 623 K has been associated to the annihilation of vacancy clusters, which were not trapped by helium atom. While the decline of the S parameter between 773 K and 823 K in the damage region might be caused by the dissociation of HenVm clusters. The dissociated vacancy clusters were unstable and annihilated rapidly, which decreases the concentration of vacancy defects.

版本历史

[V1] 2017-03-24 10:53:45 chinaXiv:201703.00529V1 下载全文
点击下载全文
同行评议状态
待评议
许可声明
metrics指标
  • 点击量1820
  • 下载量1023
评论
分享
邀请专家评阅