Damage induced by helium ion irradiation in Fe-based metallic glass

JOURNAL OF NUCLEAR MATERIALS

卷:490

Article

Zhang, Xiaonan¹  Mei, Xianxiu¹  Zhang, Qi¹  Li, Xiaona¹  Qiang, Jianbing¹  Wang, Younian¹ 

[1] Dalian Univ Technol, Minist Educ, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116024, Peoples R China

关键词: He2+ ion beam;    Irradiation damage;    Metallic glass;    Tungsten;   

DOI  :  10.1016/j.jnucmat.2017.03.021

来源: Elsevier

【 摘 要 】

The changes in structure and surface morphology of metallic glasses Fe80Si7.B-43(12.57) and Fe68Zr7B25 before and after the irradiation of He ions with the energy of 300 keV were investigated, and were compared with that of the tungsten. The results show that after the He2+ irradiation, metallic glass Fe68Zr7B25 still maintained amorphous. While a small amount of metastable beta-Mn type phase nanocrystals formed in metallic glass Fe80Si7.B-43(12.57) at the fluence of 4.0 x 10(17)ions/cm(2) (19dpa). The nanocrystals transformed into alpha-Fe phase and tetragonal Fe2B phase as the fluence increased to 1.0 x 10(18)ions/cm(2) (47dpa). Then the new orthogonal Fe3B phase and beta-Mn type phase nanocrystals appeared when the fluence increased further, and the quantities of nanocrystals increased. Blisters and cracks appeared on the surface of tungsten under the irradiation fluence of 1.0 x 10(18)ions/cm(2), however only when the fluence was up to 1.6 x 10(18)ions/cm(2), could cracks and spalling appear on the surfaces of metallic glasses. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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