Advanced micromechanical characterization techniques for understanding materials behavior at the nanoscale

2018-10-27
Özerinç, Sezer
Abboud, Mohammad
Motallebzadeh, Amir
Kalay, Yunus Eren
Mechanical properties of most new generation materials such as nanostructured metals, nanoporous materials, metallic glasses, and thin film coatings cannot be investigated by conventional uniaxial testing techniques because of geometrical restrictions. Recent developments in microfabrication techniques have enabled the production of microscale specimens that are analogous to the macroscale counterparts. Microcylinders, microcantilevers, microtensile specimens and many other geometries can now be fabricated effectively, and nanomechanical transducers with nm-level displacement and nN-level force resolution can be used to test these microspecimens. We investigated a number of different materials such as metallic glasses and thin film coatings through micropillar compression tests. We also manufactured microcantilever specimens for fracture testing of hard coatings. We manufactured these microspecimens using focused ion beam, and performed the tests using a nanoindenter equipped with a flat punch. We demonstrate that advanced micromechanical testing is a powerful tool for probing the mechanical behavior of new generation materials and thin films.
Citation Formats
S. Özerinç, M. Abboud, A. Motallebzadeh, and Y. E. Kalay, “Advanced micromechanical characterization techniques for understanding materials behavior at the nanoscale,” presented at the 19th International Metallurgy and Materials Congress (25- 27 October 2018), İstanbul, Turkey, 2018, Accessed: 00, 2021. [Online]. Available: http://immc.metem.org.tr/index.php/2016-03-03-13-14-44.