Speaker: Eda Aydoğan Güngör
Title: Development and characterization of the next generation of nuclear energy materials
Date/Time: April 17, 2019 / 13.40-14.30
Place: FENS L062
Abstract: There is a worldwide need of nuclear energy due to the increase in the world’s population and the desire to reduce greenhouse gasses from burning of fossil fuels. However, nuclear energy systems operate under high temperatures and stresses, chemically corrosive environments, and high neutron fluxes. Engineered ferritic alloys are one of the best materials for high temperature and extreme radiation environments. However, thermal stability and radiation damage resistance in these alloys are directly correlated with the microstructure which can be tailored by increasing the density of sinks (dislocations, grain boundaries, phase boundaries, twin boundaries etc.) by using different processing techniques. In this study, thermal stability and radiation resistance of oxide dispersion strengthened (ODS) alloys produced by powder metallurgy (PM) methods and ferritic/martensitic (F/M) steels produced by additive manufacturing (AM) techniques have been investigated. Recently, we have shown that the microstructure of ODS alloys is extremely stable up to >1000 0C and they show almost zero swelling under high dose irradiation. Moreover, AM F/M steels were found to have finer microstructures compared to the wrought materials, and their mechanical properties and radiation resistance are comparable (even better) to the wrought materials.
BIO: Dr. Aydogan obtained her BS. and MS. degrees in Metallurgical and Materials Engineering from Middle East Technical University in 2010 and 2012, respectively. In 2016, she received his PhD. in Materials Science and Engineering from Texas A&M University, and joined Los Alamos National Laboratory (LANL) as a post-doctoral research associate. Currently, she is a research assistant professor at Sabanci University. Her research focuses on the production of structural ferritic materials resistant to high temperature, radiation and corrosion, heavy ion irradiation tests, and in-situ and ex-situ characterization of the microstructure and mechanical properties. She has expertise on ion irradiation techniques, metal additive manufacturing, and atomic scale characterization techniques including focused ion beam (FIB), scanning electron microscopy (SEM) transmission electron microscopy (TEM), atom probe tomography (APT), diffraction-based texture analysis techniques, and nano-scale mechanical testing. Dr. Aydogan has currently more than 20 publications and she is the holder of LANL “Distinguished Student” award together with TMS 2015 “best poster award”, LANL “spot award”, etc.
Contact: Emre Erdem