Aluminum alloys are widely used as fuel cladding materials for research reactors. Neutron irradiation damage is a major concern in the nuclear industry, and it is of great interest to study irradiation damage by ions, which can cause similar damage to materials. In this study, Al 6063 alloy was irradiated with Si ions at 333 K up to 90 dpa to mimic the effects of both elemental Si, a transmutation product of thermal neutrons, and Frenkel pair formation, an effect of fast neutrons. The irradiation damage was investigated by transmission electron microscopy and the nanoindentation technique. The irradiated sample's net dislocation density was about 1.2∙10¹⁴ m⁻² in the vicinity of the voids and 2∙10¹⁴ m⁻² in the vicinity of the Si peak. The implanted Si peak concentration was ∼ 6 at% at a depth of ∼ 1100 nm. The formation of voids with an average size of 8 nm, and a peak number density of ∼10²² m⁻³ was identified, and the void annihilation time dependence was found to be proportional to ${\left(\frac{1}{\mathrm{t}}\right)}^{0.25}$.

The amorphous to crystalline structure transformation temperature of the intermetallic Al₈Fe₂Si occurs at 723 K and follows the Johnson-Mell-Avrami diffusion control model. The hardness and estimated ultimate tensile strength of the irradiated surface layer, obtained by the nanoindentation measurements, increased by ∼65% in comparison to the unirradiated sample. A Similar increase in yield stress and ultimate tensile strength published values of neutron irradiation damage, occurs at much higher dpa (∼260 dpa). This difference is suggested to be related to the high dpa rate and higher at%Si/dpa ratio in the present ion irradiation experiments.

铝合金被广泛用作研究堆的燃料包壳材料。中子辐照损伤是核工业中的一个主要问题，研究离子辐照损伤非常重要，因为离子会造成类似的材料损伤。在这项研究中，以333 K高达90 dpa的Al离子对Al 6063合金进行了辐照，以模拟热中子的product变产物元素Si和快速中子的Frenkel对形成的影响。通过透射电子显微镜和纳米压痕技术研究了辐照损伤。在空隙附近，被辐照样品的净位错密度约为1.2∙10 ¹⁴ m ^-2，而在2∙10 ¹⁴ m ^-2附近在硅峰附近。在〜1100nm的深度处注入的Si峰浓度为〜6at％。确认形成了平均大小为8 nm，峰值密度为〜10 ²² m ^-3的空隙，并且发现空隙消失的时间依赖性与${（\frac{\mathrm{1个}}{\mathrm{Ť}}）}^{0.25}$。

金属间化合物Al ₈ Fe ₂ Si的无定形结构转变温度为723 K，遵循Johnson-Mell-Avrami扩散控制模型。通过纳米压痕测量获得的被辐照表面层的硬度和估计的极限抗拉强度比未辐照样品增加了约65％。在更高的dpa（〜260 dpa）时，中子辐照损伤的屈服应力和极限抗拉强度公布值出现了类似的增加。该差异被认为与当前离子辐照实验中的高dpa速率和更高的at％Si / dpa比有关。