The effect of nanostructural hierarchy on the mechanical properties of aluminium alloys during deformation processes

摘要: New generation of lightweight structures and technologies enables the development materials to exhibit superior property combinations. In present work, cellular automata is used address problem dislocation behaviour 4 factors: (i) a high density dislocations, (ii) sub-nanometre intragranular solute clusters, (iii) 2 geometries nanometre-scale intergranular (iv) grain sizes tens nanometres in diameter featuring aluminium alloys containing nanostructural hierarchy exhibiting record strength with good ductility—an aerospace grade 7075 alloy exhibits yield 1 GPa total elongation failure 9 %. We show that clusters govern such material, resulting their increasing elongation. Our results demonstrate this simulation explains phenomena super-strong new entirely regimes property-performance space.