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，也是加拿大国民经济的重要贡献者。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Guelph大学将研究Stelco通过改变热轧工艺参数和钢的化学成分生产的一些不同和新型的HSLA牌号。本研究项目的目的是将高强度低合金组织特征(富碳相、分布、形貌、晶粒度、夹杂物、析出物)对材料的细观损伤演化、大型断裂试验性能以及最终韧性的影响联系起来。在这项研究中，我们将完成(1)钢的全面微观组织表征(2)在不同温度和应变率下进行大型断口试验(Charpy V-Notch、单轴、落锤撕裂试验)(3)利用数字图像相关进行现场扫描电子显微镜测试(4)量化损伤演化并使用数据来验证组织的高级代表性体积元(RVE)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微结构，从而获得具有增强韧性的高性能材料。