Insitu and exsitu observation of solidification and semisolid deformation of advanced steel alloys

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Although all steels undergo multiple phase transformations during processing, the final microstructure is a direct result of the microstructure formed during continuous casting. In this collaborative study with Stelco, Tata Steel, and US Steel, an integrated experimental study of solidification microstructure in advanced steels will be carried out focusing on the role of Mn and Si, alloy segregation, and hot tearing. These two elements are expected to play a key role in developing the next generation of advanced plate, strip and sheet steels. Specifically, ex situ Bridgman solidification experiments, and in situ high-temperature laser scanning confocal microscopy solidification and semi-solid deformation experiments will be carried out to capture solidification morphologies and image semi-solid deformation under different processing conditions. The findings will enable the industrial partners to cast new steels in a controlled and efficient way while maintaining a high quality product, thus leading to competitive advantages and production cost benefits.