Unusual size effects from tilted twin boundaries in nano-twinned metals
Sign Up to like & getrecommendations! Published in 2019 at "Extreme Mechanics Letters"
DOI: 10.1016/j.eml.2019.100571
Abstract: Abstract Tilted twin boundaries (TBs), whose plane normals are rotated at an angle from the parent grain axis, naturally occur in columnar-grained, nano-twinned (NT) metals. Here, using a combination of atomistic simulations and analytical modeling,… read more here.
Keywords: tilted twin; twin thickness; size; twinned metals ... See more keywords
Transition from source- to stress-controlled plasticity in nanotwinned materials below a softening temperature
Sign Up to like & getrecommendations! Published in 2019 at "npj Computational Materials"
DOI: 10.1038/s41524-018-0140-5
Abstract: Nanotwinned materials have been widely studied as a promising class of nanostructured materials that exhibit an exceptional combination of high strength, good ductility, large fracture toughness, remarkable fatigue resistance, and creep stability. Recently, an apparent… read more here.
Keywords: temperature; transition source; nanotwinned materials; twin thickness ... See more keywords
Size-dependent dislocation-twin interactions.
Sign Up to like & getrecommendations! Published in 2019 at "Nanoscale"
DOI: 10.1039/c9nr03637g
Abstract: Dislocation-twin interactions critically control the plastic deformation and ultrahigh strength of nanotwinned metals. Here, we report a strong twin-thickness dependence of dislocation-twin interaction mechanisms from the tensile deformation of face-centered cubic metallic nanocrystals by in… read more here.
Keywords: twin; dislocation; twin thickness; size ... See more keywords