In situ TEM nanomechanics

Q. Yu (1) , Marc Legros (2) , A.M. Minor (3)

1 Zhejiang University
2 CEMES - Centre d'élaboration de matériaux et d'études structurales
3 LBNL - Lawrence Berkeley National Laboratory [Berkeley]

In situ transmission electron microscopy (TEM) nanomechanical testing has benefited from a number of recent technical developments related to both how deformation is imaged and how deformation is induced and measured inside a TEM instrument. These developments have led to new insights into the deformation mechanisms of a wide range of metals and alloys, as well as measurements of the unusual mechanical properties of small-scale objects such as whiskers and nanocrystals. Herein, we describe this recent progress through selected highlights of recent findings on the dynamic behavior of defects such as dislocations, twins, and grain boundaries.

Mots clés: Deformation; Grain boundaries; In situ processing; Instrument testing; Mechanical properties; Mechanical testing; Metallurgy; Transmission electron microscopy; Deformation mechanism; Dynamic behaviors; In situ transmission electron microscopy (TEM); Measurements of; Metals and alloys; Nanomechanical testing; Recent progress; Technical development; Nanocrystalline alloys

Domaines: Physique [physics]

Q. Yu, Marc Legros, A.M. Minor. In situ TEM nanomechanics. MRS Bulletin, 2015, 40 (1), pp.62-68. ⟨10.1557/mrs.2014.306⟩. ⟨hal-01729246⟩