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

虽然所有的钢在加工过程中都会经历多次相变，但最终的显微组织是连铸过程中形成的显微组织的直接结果。在这项与Stelco，Tata Steel和US Steel的合作研究中，将对先进钢的凝固显微组织进行综合实验研究，重点关注Mn和Si的作用，合金偏析和热裂。预计这两个元素将在开发下一代先进的板材、带材和薄板钢方面发挥关键作用。具体而言，非原位Bridgman凝固实验，和原位高温激光扫描共聚焦显微镜凝固和半固态变形实验将进行捕捉不同的工艺条件下的凝固形态和图像的半固态变形。这些发现将使工业合作伙伴能够以可控和有效的方式铸造新钢材，同时保持高质量的产品，从而带来竞争优势和生产成本效益。

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.