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On Temperature Rise Within the Shear Bands in Bulk Metallic Glasses
A. I. Bazlov,A. Yu. Churyumov,M. Buchet,D. V. Louzguine-Luzgin 대한금속·재료학회 2018 METALS AND MATERIALS International Vol.24 No.3
Room temperature deformation process in a bulk metallic glassy sample was studied by using a hydraulic thermomechanicalsimulator. The temperature rise during each separate shear band propagation event was measured with a high data acquisitionfrequency by a thermocouple welded to the sample. Calculation showed that when propagation of the well developedshear bands takes place along the entire sample the temperature inside the shear band should be close to the glass-transitiontemperature. It was also possible to resolve the temporal stress distribution and a double-stage character of stress drops wasalso observed. The obtained results are compared with the literature data obtained by infrared camera measurements andthe results of fi nite elements modeling.