Measurement of enhanced ductility in nanolayered ceramics via micro-compression testing and digital image correlation
September 29-October 4, 2019
The use of ceramic or intermetallic structures in industrial applications is limited by their brittleness. However, it has been shown that nanolayered ceramics, such as the MAX phases, show unusually high levels of plasticity, with resolved shear yield stresses being reported to be as low as 77 MPa . Our aim is to show that the origin of this behaviour is related to electron density shifts between layers, which enable eased dislocation movement compared to non-layered ceramics . For an accurate study of this effect, and to prove its generality, a reliable determination of the onset of plastic deformation in form of dislocation movement is crucial.
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Julia T. Pürstl, Thomas Edwards, Fabio Di Gioacchino, and William Clegg, "Measurement of enhanced ductility in nanolayered ceramics via micro-compression testing and digital image correlation" in "Nanomechanical Testing in Materials Research and Development VII", Jon Molina-Aldareguia, IMDEA-Materials Institute, Spain Eds, ECI Symposium Series, (2019). https://dc.engconfintl.org/nanochemtest_vii/75