Micromechanical Testing of HM
Session 35 Tuesday 16 October 14:30 - 16:00
Session 42 Tuesday 16 October 16:45 - 18:15
Prof Luis Miguel Llanes (UPC, Spain)
Dr José Manuel Sanchez Moreno (CEIT, Spain)
The Special Interest Seminar on MICROMECHANICAL TESTING OF HARD MATERIALS (to be held on Oct 16th as part of the EUROPM 2018 conference) addresses the state-of-the-art on the characterization of mechanical properties of hard materials at microscopic scale. The works to be presented include different ceramic metal composites with special focus in hardmetals and PVD and CVD hard coatings.
The objective of these tests is to obtain quantitative information about the mechanical behaviour of microstructural features with sizes in the order of a few cubic microns including, among others, single Co ligaments in hardmetals, individual WC-WC interfaces, samples extracted from CVD and PVD coatings, etc.
Different methodologies are currently available for obtaining stress-strain curves corresponding to these small volumes of material. In most of the cases, they involve the use of different FIB milling strategies (micropillars, microbeams, bridges, etc. ), instrumented loading systems (“In-situ” and other testing methods), high resolution electron microscopy and finite element modelling including crystal plasticity data. Key issues like metrological methods and the effect of residual stresses will be also discussed.
Deformation and Fracture Mechanisms of Nanoscale Metallic and Metal-Ceramic Multilayers
Prof Jon M. Molina-Aldareguia (IMDEA Materials Institute, Spain)
A Metrological Study of Micro-pillar Compression Tests in WC/Co Hardmetals
Dr Helen Jones (National Physical Laboratory, UK)
Small-scale Mechanical Response of Cemented Carbides
Dr. Luis Llanes (Technical University of Catalonia, Spain)
Micromechanics of Polycrystalline CVD coatings for Milling Inserts
Dr. Jose García (Comahue University, Argentina)
Measuring Mechanical Properties and Residual Stresses at Local Scale in Hardmetals
Dr M. Reyes Elizalde (CEIT, Spain)