Effects of high-intensity pulsed ion beam irradiation on the structural thermal stability of Fe80Si7.B-43(12.57) metallic glass
Effects of high-intensity pulsed ion beam irradiation on the structural thermal stability of Fe80Si7.B-43(12.57) metallic glass
复制标题
高强度脉冲离子束辐照对Fe80Si7.B-43(12.57)金属玻璃结构热稳定性的影响
DOI：
10.1016/j.fusengdes.2018.10.012
复制
发表时间：
2019
影响因子：
1.7
通讯作者：
Wang Younian
中科院分区：
文献类型：
--
作者：
Zhang Qi;Mei Xianxiu;Guan Tong;Zhang Xiaonan;Remnev Gennady E;Pavlov Sergey K;Wang Younian
用高强度脉冲离子束在不同能量密度和脉冲数下辐照Fe80Si7.43B12.57金属玻璃，研究其结构热稳定性。300次脉冲后，玻璃表面出现大量圆孔和几个凸起。不同能量密度辐照后，表面未见明显损伤。高分辨电子显微镜分析表明，辐照对玻璃的近表面原子排列有很大影响。辐照引起玻璃内原子的强烈迁移和聚集，导致原子排列不均匀。尽管原子排列有序，但金属玻璃仍然是无定形的。辐照后金属玻璃的表面反射率略有下降。辐照脉冲的数目对铁基金属玻璃的影响大于其能量密度。
A high-intensity pulsed ion beam was used to irradiate Fe80Si7.43B12.57metallic glass at different energy densities and numbers of pulses to study its structural thermal stability. A large number of round holes and a few bumps appeared on the surface of the glass after 300 pulses. No obvious damage was observed on the surface after irradiation at different energy densities. High-resolution transmission electron microscopy showed that this irradiation had a strong influence on the near-surface atomic arrangement of the glass. Irradiation induced strong migration and aggregation of atoms within the glass, causing an uneven atomic arrangement. Although there was an ordered arrangement of atoms, the metallic glass remained amorphous. The surface reflectivity of the metallic glass decreased slightly after irradiation. The number of irradiation pulses had greater impact on this Fe-based metallic glass than their energy density.