Abstract Voids, helium bubbles and stacking fault tetrahedra (SFTs) are common irradiation-induced defects in face-centered cubic (FCC) metals and their alloys that have detrimental effects on their deformation behavior and lifetime. The formation mechanisms of voids and SFTs have been investigated in single crystals but the potential augmentation of these mechanisms by a heterophase interface has not been well studied. Here, using transmission electron microscopy (TEM), we report on the stability of both SFTs and voids at interfaces in an irradiated Cu/Ag nanolayered composite. With atomistic simulations, we show that the heterophase interface can promote the transformation of voids (

中文翻译：

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界面促进空隙直接转化为堆垛层错四面体

摘要 空隙、氦气泡和堆垛层错四面体 (SFT) 是面心立方 (FCC) 金属及其合金中常见的辐照诱导缺陷，对其变形行为和寿命具有不利影响。已经在单晶中研究了空隙和 SFT 的形成机制，但尚未很好地研究异相界面对这些机制的潜在增强。在这里，我们使用透射电子显微镜 (TEM) 报告了 SFT 和经辐照的 Cu/Ag 纳米层复合材料界面处空隙的稳定性。通过原子模拟，我们表明异相界面可以促进空隙的转变（