Radiation-induced structural evolution in Zr2Cu metallic glass

Wang, Y. F.; Li, H. Y.; Yang, Liang

doi:10.1007/s10853-018-2358-5

Cited by 21 publications

(2 citation statements)

References 41 publications

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“…The movement of the recoil atom could lead to the phase transformation, particularly for crystal materials; however, for Fe 54 Cr 18 Mo 2 Zr 8 B 18 amorphous coating, the transient vacancy-like defects caused by the collision cascades can likely be annihilated by combining with neighboring free volumes. As revealed by previous simulation work, redistribution of free volumes would subsequently occur in the amorphous structure until a new balance of both structure and energy is achieved [46,47]. In other words, the existence of free volumes in glassy solids can annihilate the vacancy-like defects and the rearrangement of the free volumes leads to a re-stabilized structure, thus producing the observed high radiation resistance of the amorphous coating.…”

Section: Au-ion Irradiationsmentioning

confidence: 77%

Corrosion and irradiation behavior of Fe-based amorphous coating in lead-bismuth eutectic liquids

Peng

Tang

Han

et al. 2021

Sci. China Technol. Sci.

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Lead-bismuth eutectics (LBE) have considerable potential as a candidate material for accelerator-driven sub-critical systems (ADS). However, LBE corrosion and irradiation damage are two urgent challenges remaining to be solved for impellers of primary pumps. In this study, we have explored the possibility of using Fe-based amorphous coatings to overcome LBE corrosion and concurrently to sustain irradiation damage. Specifically, the Fe 54 Cr 18 Mo 2 Zr 8 B 18 amorphous coating was prepared by high-velocity oxygen-fuel (HVOF) spraying on 316L steel and exposed to saturated oxygen static LBE for 500 h at 400°C. The coating with high thermal stability (T g =615°C and T x =660°C) effectively prevented the substrate steel from being corroded by LBE owing to its unique long-range disordered atomic packing. The coating also exhibited strong irradiation resistance when being subjected to 45 dpa (displacement per atom) Au ion irradiation at room temperature, with no sign of crystallization even at the maximum implantation depth of 300 nm. Consequently, the hardness of the coatings before and after irradiation increased slightly. The current findings shed new insights into understanding corrosion mechanism and irradiation behavior of amorphous solids in LBE and expand the application range of amorphous materials.

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Section: Au-ion Irradiationsmentioning

confidence: 77%

Corrosion and irradiation behavior of Fe-based amorphous coating in lead-bismuth eutectic liquids

Peng

Tang

Han

et al. 2021

Sci. China Technol. Sci.

View full text Add to dashboard Cite

show abstract

“…As the PKA engaged a number of atoms in chaotic motion, collision cascades were generated and the model became unstable. After this period, the NVE ensemble was unsuitable to simulate the evolving cooling or structural relaxation process, 33 thus, the NPT (constant number of particles, pressure and temperature) ensemble considering more fitting was implemented with a constant time step of 2 fs, lasting for 30 ns. In the NPT ensemble, the initial temperature was set to inherit the final temperature after the NVE simulation ends with the NPT ensemble reaching a temperature of 300 K, the final temperature at which the system could reach a stable state.…”

Section: Irradiation Simulationmentioning

confidence: 99%