Features of a nano-twist phase in the nanolayered Ti3AlC2 MAX phase

Complex intermetallic materials known as MAX phases exhibit exceptional properties from both metals and ceramics, largely thanks to their nanolayered structure. With high-resolution scanning transmission electron microscopy supported by atomistic modelling, we reveal atomic features of a nano-twist phase in the Ti3AlC2. The rotated hexagonal single-crystal is encompassed within basal symmetric twist interfaces similar grain boundaries. In particular, show that air-oxidation at 1000 ∘C can form twisted leads formation interfacial dislocation networks with screw characters or severe reconstructions. Additionally, explore contribution disclinations representation continuum models stress field generated such defect Ti3AlC2 bulk phase. occurrence this unexpected foreseen impact physical response nanolayered-based material and, such, supports property-by-design approaches.