嵌入式软件技术的现状与发展

随着我国科学技术水平的不断提升,人们的生活变得更加便捷,同时科技的发展也带动了很多领域的发展,科技的研究也被社会各界所重视。目前,计算机技术在我国各项领域当中,而嵌入式软件则是目前计算机技术当中较为重要的软件技术。嵌入式软件的发展速度较快,这项技术也得到了人们的认可,在各项领域当中使用,为各项领域的发展提供帮助,本文通过对嵌入式软件的概念进行分析,探讨目前嵌入式软件的发展现状以及发展趋势,为嵌入式软件的发展提供可行性建议。     

Strengthening and softening in gradient nanotwinned FCC metallic multilayers

Plastic-deformation behaviors of gradient nanotwinned (GNT) metallic multilayers are investigated in nanoscale via molecular dynamics simulation. The evolution law of deformation behaviors of GNT metallic multilayers with different stacking fault energies (SFEs) during nanoindentation is revealed. The deformation behavior transforms from the dislocation dynamics to the twinning/detwinning in the GNT Ag, Cu, to Al with SFE increasing. In addition, it is found that the GNT Ag and GNT Cu strengthen in the case of a larger twin gradient based on more significant twin boundary (TB) strengthening and dislocation strengthening, while the GNT Al softens due to more TB migration and dislocation nucleation from TB at a larger twin gradient. The softening mechanism is further analyzed theoretically. These results not only provide an atomic insight into the plastic-deformation behaviors of certain GNT metallic multilayers with different SFEs, but also give a guideline to design the GNT metallic multilayers with required mechanical properties.