The demand for cleaner steels increases every year. In addition to lowering non-metallic oxide inclusions and controlling their size distribution, morphology, and composition, clean steel requires control of sulfur, phosphorus, hydrogen, nitrogen and even carbon, and minimizing metallic impurity elements such as As, Sn, Sb, Se, Cu, Zn, Pb, Cd, Te and Bi. These requirements vary with steel grade...

Abstract Clogging of the submerged entry nozzle (SEN) is a common and persistent issue in continuous casting process for steel alloys. The dominant clogging mechanism has been attributed to deposition accumulation non-metallic inclusions (NMI) melt. Prior studies NMI assume that every collision between an inclusion wall results adhesion, which unrealistic. In this study, macroscopic transport m...

Non-metallic inclusions and twin boundaries are preferred fatigue crack nucleation locations in polycrystalline Ni-based superalloys. A Heaviside HR-DIC, EBSD multi-scale modelling strategy (CPFE-DDP) was used to assess experimental observations of near agglomerated RR1000 at elevated temperature. Inclusion fracture decohesion were observed within the first cycle loading. Fatigue non-metallic i...

In this work, a comprehensive methodology for the fitting of single-walled carbon nanotube absorption spectra is presented. Different approaches to background subtraction, choice of line profile, and calculation of full width at half-maximum are discussed both in the context of previous literature and the contemporary understanding of carbon nanotube photophysics. The fitting is improved by the...