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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Powder Materials for Energy Applications
Presentation Title Synthesis and Characterization of Lanthana Based ODS Steel for Nuclear Reactor Applications
Author(s) Ashwani Kumar, Krishanu Biswas, Sudhanshu Shekhar Singh
On-Site Speaker (Planned) Ashwani Kumar
Abstract Scope Oxide dispersed strengthened (ODS) ferritic steels have emerged as promising material for the core of nuclear reactors due to a good combination of resistance to radiation and high temperature strength. The most commonly used oxide in ODS steels is yttria (Y2O3). Although extensive studies have been carried out with yittria in ODS steels, other rare earth oxides have not been explored. In the present study, tungsten containing ODS steel (Fe-14Cr-1Ti-xW-0.5L2O3) has been fabricated by mechanical alloying followed by spark plasma sintering. The variation of tungsten (W) content and temperature (1050oC and 1100oC) on the microstructure and mechanical properties of lanthana based ODS steel have also been studied. Microstructural characterization was performed using X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The quantification of mechanical properties using nano-indentation and compression testing indicated that 14LWT ODS steels exhibit equivalent or better mechanical properties than the conventional 14YWT ODS steels.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


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