The effect of hot rolling process parameters on the microstructure, toughness and damage evolution of High Strength Low Alloy (HSLA) steels

热轧工艺参数对高强度低合金（HSLA）钢显微组织、韧性和损伤演变的影响

• 批准号: 566520-2021
• 负责人: Bardelcik, Alexander
• 金额: $ 3.18万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Alliance 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=723371
• 关键词: effect; hot; rolling; process; parameters

Stelco Inc. is a major Canadian steel producer and significant contributor to the national economy. High Strength Low Alloy (HSLA) steel is an important product for Stelco due to its significant application within the energy, infrastructure, transportation, and agriculture sectors. Stelco and the University of Guelph will investigate a number of different and novel HSLA grades that Stelco produces by varying hot rolling process parameters and steel chemistry. The goal of this research project is to link the effect of HSLA microstructural characteristics (carbon-rich phases, distributions, morphology, grain size, inclusions, precipitates) on the meso-scale damage evolution, large-scale fracture test performance, and ultimately toughness of the material. In this research effort, we will complete a (1) comprehensive microstructural characterization of the steels (2) conduct large-scale fracture testing at various temperatures and strain-rate (Charpy V-Notch, Uniaxial, Drop Weight Tear Test) (3) conduct in-situ SEM testing with digital image correlation (4) quantify damage evolution and use the data to (5) validate advanced representative volume element (RVE) finite element models of the microstructures. The successful execution of this project will allow Stelco to better understand design an HSLA microstructure that will result in a high performance material with enhanced toughness.

Stelco Inc.是加拿大主要的钢铁生产商，对国民经济做出了重要贡献。高强度低合金（HSLA）钢是Stelco的重要产品，因为它在能源，基础设施，交通和农业领域有着重要的应用。Stelco和圭尔夫大学将研究Stelco通过改变热轧工艺参数和钢材化学成分生产的许多不同和新颖的HSLA等级。该研究项目的目标是将HSLA微观结构特征（富碳相、分布、形态、晶粒尺寸、夹杂物、沉淀物）对材料的中尺度损伤演化、大尺度断裂试验性能以及最终韧性的影响联系起来。在这项研究工作中，我们将完成（1）钢的全面微观组织表征（2）在不同温度和应变速率下进行大规模断裂试验（夏比V型缺口，单轴，落锤撕裂试验）（3）使用数字图像相关性进行原位SEM试验（4）量化损伤演变并使用数据（5）验证高级代表性体积元（RVE）微观结构的有限元模型。该项目的成功实施将使Stelco能够更好地了解设计HSLA微观结构，从而获得具有增强韧性的高性能材料。