PPGCEM Doctoral student twice awarded at international conference

Pedro Henrique Fernandes Oliveira, Doctoral student at PPGCEM/UFSCar, was twice awarded in the SBPMat-2021 conference, held by the Brazilian Society for Materials Research, a partner of the Materials Research Society. The work received the Bernhard Gross awards, for best poster presented at the Characterization of organic and non-organic materials by x-ray source techniques symposium, and the Royal Society of Chemistry award, for best contributions from students throughout the event. The research, entitled ''In-situ synchrotron X-ray evaluation on the evolution of dislocation and stackingfault densities for a Cu-0.7Cr-0.07Zr alloy during cryogenic tensile test'', was carried out under the under supervision of Professor Vitor Luiz Sordi (Advisor), Dr. Danielle Cristina Camilo Magalhães (Co-advisor) and had significant contributions from Professor Andrea Madeira Kliauga. It is noteworthy that the work is the result of a partnership with members of the Graduate Program in Engineering and Materials Science at the State University of Ponta Grossa (UEPG), professor Osvaldo Cintho and doctoral student Marcel Izumi, and used the infrastructure of the XTMS station (X-ray Scattering and Thermo-Mechanical Simulation), located at the National Synchrotron Light Laboratory, in Campinas/SP. The work allowed to study, in-situ, the phenomena responsible for the simultaneous increase in mechanical strength and ductility, during the deformation stage, of a commercial alloy of the CuCrZr system. According to the author's words, ‘’the work brings significant contributions because the in-situ study allowed us to observe, in fact, the mechanisms that provide the increase in mechanical strength and ductility of these alloys, when deformed at cryogenic temperatures. The studies carried out so far performed a 'post mortem' analysis of the material after the deformation stage. Therefore, what was done was an analysis of the deformed material, and from that it was concluded what happened to the material during the deformation; it's like a ''forensic science'' of materials. In this context, as our study used the X-Ray diffraction technique during the tensile test, we were able to actually observe what happens to the material during the deformation step. This contribution is even more significant because the Cu-0.7Cr-0.07Zr alloy is currently used, operating at cryogenic temperatures, as heat exchangers in tests in the International Thermonuclear Experimental Reactor: the first commercial-scale nuclear fusion reactor for energy production.''