Modeling heat flow and microstructure of microalloyed steels produced on an industrial run out table

对工业用料台上生产的微合金钢的热流和微观结构进行建模

• 批准号: 538420-2018
• 负责人: Henein, Hani
• 金额: $ 8.56万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=699227
• 关键词: Modeling; heat; flow; microstructure; microalloyed

Micro-alloyed steels are very cost-effective steels for a wide range of applications where improved mechanical properties, namely strength, hardness, creep and toughness, are desired. Careful control of the chemistry of the steel, coupled with controlled processing of the slabs through hot working and cold forming result in achieving the desired properties for microalloyed steels. Typically, these properties are achieved metallurgically in thermomechanical processing through a combination of grain refinement, solute strengthening and precipitation hardening. One of the key operations in achieving these properties is on the run out table (ROT). Here the strip steel is cooled after the last rolling pass to achieve the desired microstructure and properties of the skelp. Recent advances in modeling the heat losses on the ROT and the CCT diagram provides the opportunity to further enhance and control the finished microstructure and properties as well as the homogeneity and consistency of the product from the start of a coil to its end. In this project, we aim to further validate this combined heat transfer-microstructure evolution model for the ROT using different grades of pipeline microalloyed steels. This project will involve the carrying out of plant trials, coupled with the generation of CCT Diagrams for the steels, mathematical modeling of the heat loss from the skelp coupled with the steel transformation. Two Graduate Students per year will be trained in this 4 year project. The fundamental understanding of the fabrication, microstructure, properties and performance of these higher strength microalloyed steel grades for pipeline applications will have significant socio-economic benefits to Canada.

微合金钢是一种非常具有成本效益的钢，适用于需要改善机械性能（即强度、硬度、蠕变和韧性）的广泛应用。 仔细控制钢的化学成分，再加上通过热加工和冷成型对板坯进行控制加工，可以实现微合金钢所需的性能。 通常，这些性能是通过晶粒细化、溶质强化和沉淀硬化的组合在热机械加工中以冶金方式实现的。 实现这些属性的关键操作之一是运行表 (ROT)。 带钢在最后一道轧制后被冷却，以获得所需的骨架微观结构和性能。 ROT 和 CCT 图上热损失建模的最新进展为进一步增强和控制最终的微观结构和性能以及产品从卷材开始到结束的均匀性和一致性提供了机会。 在这个项目中，我们的目标是使用不同等级的管道微合金钢进一步验证 ROT 的传热-微观结构演化组合模型。 该项目将涉及进行工厂试验、生成钢材的 CCT 图、对骨架热损失以及钢材转变进行数学建模。 每年将有两名研究生在这个为期 4 年的项目中接受培训。 对这些用于管道应用的高强度微合金钢的制造、微观结构、性能和性能的基本了解将为加拿大带来显着的社会经济效益。