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: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=720529
• 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.

对于广泛的应用机械性能，即强度，硬度，蠕变和韧性，微型合金钢是非常具有成本效益的钢。 仔细控制钢的化学性质，并通过热工作和冷形成对板的控制加工，从而实现了微合成钢的所需特性。 通常，这些特性是通过晶粒细化，溶质加强和沉淀硬化的结合在热力学加工中实现冶金的。 实现这些属性的关键操作之一是在耗尽的表（ROT）上。 在这里，在上次滚动后，将带状钢冷却，以达到Skelp的所需微观结构和性能。 对腐烂和CCT图的热量损失进行建模的最新进展为进一步增强和控制完成的微观结构和属性以及产品的均匀性和一致性从线圈开始到末端。 在这个项目中，我们旨在进一步验证使用不同等级的管道微合同钢的腐烂的联合传热微观结构演化模型。 该项目将涉及进行植物试验的进行，再加上钢的CCT图，Skelp的热量损失的数学建模以及钢转换。 每年将在这个4年项目中对两名研究生进行培训。 这些高强度微型合金钢等级的制造，微观结构，性能和性能的基本理解将对加拿大具有重大的社会经济利益。