Materials Processing Fundamentals: Steel Casting
Sponsored by: TMS Extraction and Processing Division, TMS Materials Processing and Manufacturing Division, TMS: Process Technology and Modeling Committee
Program Organizers: Jonghyun Lee, Iowa State University; Samuel Wagstaff, Oculatus Consulting; Alexandra Anderson, Gopher Resource; Fiseha Tesfaye, Metso Metals Oy, Åbo Akademi University; Guillaume Lambotte, Boston Metal; Antoine Allanore, Massachusetts Institute of Technology

Tuesday 2:00 PM
March 16, 2021
Room: RM 42
Location: TMS2021 Virtual

Session Chair: Samuel Wagstaff, Oculatus Consulting; Antoine Allanore, MIT


2:00 PM  
The Role of Copper in Combustion Processes: Fiseha Tesfaye1; Daniel Lindberg2; Mykola Moroz3; Leena Hupa1; 1Abo Akademi University; 2Aalto University; 3Ivan Franko National University of Lviv
    Recently, the effect of Cu in combustion processes has boldly emerged with the drastic increase in the waste combustion and secondary metals smelting, sparking the need to develop thermodynamic databases for a better understanding and control. In the present work, we have reviewed content and sources of copper in biomass fuels and ashes, and examined the mechanisms through which it affects combustion processes and the environment. Phase relations of the main forms of copper in the high-temperature combustion processes, CuClx and CuSO4, were investigated, and their effects on the melting behavior of chlorides and sulfates of Na, K, Cu, Pb, Zn, and Fe were determined. All the studied systems were observed to be eutectic. The obtained results are presented and discussed.

2:20 PM  
Stress Development Simulation in Continuously Cast Steel Slabs during Cooling Process: Duo Huang1; 1Purdue University
    During cooling process of continuously cast steel slabs, thermal gradient and phase transformation can cause stress development. Depending on the steel compositions and cooling conditions, high stress levels and residual stresses can be attained. In this study, a three-dimensional finite volume thermal-mechanical model coupled with transient heat transfer and phase transformation is developed. The model can predict stress development, temperature history, and phase distribution during steel slabs cooling process. The stress development of steels with different phase transformation behavior and hardenability is simulated and discussed in terms of composition and processing history.