IN-SITU DEFORMATION IN TEM - RECENT DEVELOPMENTS

In situ deformation tests in T.E.M. are currently performed in our laboratory on different types of material to study their mechanical properties. Recent developments of this technique are presented in this paper. Many examples from our recent works are demonstrated to support this presentation. The procedure of the specimen preparation and the special straining holders are described in details. The validity of the results to explain the behaviour of the bulk materials is discussed with special attention to the stress control and the possible artefacts. The qualitative and quantitative potentialities of this technique are reviewed.