This talk will be the in-situ mechanics for studying the mechanical behavior at atomistic scale for nanometer-sized single element metallic glass and crystal BCC metals. The experimental molecular dynamics with the in-situ Cs-corrected high resolution transmission electron microscope is going to open a new approach to directly observe atomic-scaled deformation mechanisms in competing with numerical molecular dynamics. I will cover the high stress induced lattice disturbance, dislocation dipole nucleation and competition between slip and twinning in the deformation process of nano-sized body center cubic metals1 and deformation in single elemental metallic glasses2
1) Jiangwei Wang, Scott X. Mao et al, In Situ Atomic-Scale Observation of Twinning Dominated Deformation in Nanoscale Body-Centred Cubic Tungsten, Nature Materials, doi:10.1038/nmat4228, March 2015.
2) Li Zhong, Scott X. Mao et al, Formation of monatomic metallic glasses through ultrafast liquid quenching, Nature , Vol.512, 177 (2014).
