Thermodynamics of Materials in Extreme Environments: Poster Session
Sponsored by: ACerS Basic Science Division, ACerS Energy Materials and Systems Division
Program Organizers: Xiaofeng Guo, Washington State University; Kristina Lilova, Arizona State University; Kyle Brinkman, Clemson University; Alexandra Navrotsky, Arizona State University; Jake Amoroso, Savannah River National Laboratory; Xingbo Liu, West Virginia University; Gustavo Costa, NASA Glenn Research Center
Monday 5:00 PM
October 10, 2022
Room: Ballroom BC
Location: David L. Lawrence Convention Center
Session Chair: Kristina Lilova, Arizona State University
G-3: Effect of Desulfurizer on Hot Metal Pretreatment: Liang Tian1; Wufeng Jiang1; Suju Hao1; Yuzhu Zhang1; 1North China University of Science and Technoloy
Sulfur is the main harmful element affecting the quality and performance of steel. The sulfur content in molten iron directly determines the processability and applicability of steel. Therefore, desulfurization has become a key step in hot metal pretreatment. This paper analyzed the causes of desulfurization from the perspective of thermodynamics, and pointed out that the suitable conditions for hot metal pretreatment desulfurization are high temperature, low oxygen level and high oxygen anion concentration. Theoretical analysis and performance introduction of the desulfurization mechanism of commonly desulfurizers were carried out, and it is pointed out that the composite desulfurizer couid improve the desulfurization efficiency and reduce the impact on the environment.
G-4: Investigation of the Thermodynamics of Intermetallic Materials in the Simulation of Synthesis in the Ti-Al system: Borys Sereda1; Iryna Kruhliak1; Dmytro Sereda1; Yuriy Belokon1; 1Dneprovsky State Technical University
The results of a thermodynamic analysis of the reactions that are possible in the preparation of titanium-aluminum alloy intermetallic compounds under conditions of self-propagating high-temperature synthesis (SHS) are presented. Thermodynamic analysis showed that the adiabatic combustion temperature for the titanium-aluminum system is lower than the melting temperature of the final product, which is an insufficient condition for the SHS reaction to occur under normal conditions. To carry out the synthesis reaction, coarse heating of the system to the α-TiAl temperature of alloys of 400 ... 600 K is necessary. A sequence of SHS reactions is also established, leading to the formation, which helps to elucidate the mechanism of obtaining special alloys of the Ti-Al system formed under SHS conditions.