Process compatibility and damage performance of carbide-free bainite advanced high strength steel (AHSS) sheets

无碳化物贝氏体先进高强度钢（AHSS）板材的工艺兼容性和损伤性能

• 批准号: 531490-2018
• 负责人: Zurob, Hatem
• 金额: $ 2.37万
• 依托单位: McMaster University
• 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=698075
• 关键词: Process; compatibility; damage; performance; carbide

Intense research efforts are being expended on developing advanced high strength steels (AHSS) for vehicle weight reduction (improved fuel economy/lower emissions) and crash resistance (improved passive safety). This has resulted in the development of a number of Third Generation (3G) steels. Although some of the newest 3G steels have demonstrated the required properties at the lab scale, the optimum thermomechanical processing requirements to commercially produce these grades are beyond current Canadian plant capabilities. Further, the high capital costs of upgrading production facilities may induce global steel manufacturers to concentrate production of these critical high value-added products in locations outside Canada. In order to mitigate this risk, McMaster University and CanmetMATERIALS will investigate the processing and performance of a specific class of bainitic steels that are suitable for processing on existing continuous galvanizing lines (CGL) at ArcelorMittal Dofasco's facilities in Hamilton, ON. The target performance is tensile strength of more than 1150MPa with total elongation approaching 20%, which significantly surpasses the properties of current AHSS commercial products made by steel plants in Canada (e.g. 780 and 980MPa grades). Further, ductility for improved forming response (e.g. stretch flangeability) is required to stamp complex autobody structural parts. The damage performance of the proposed CFB sheets has not been studied adequately and the interplay between microstructure-damage properties of this class of AHSS remains to be determined (knowledge gap). The main objectives of this research are twofold: (a) Tailor alloy composition and processing parameters of carbide-free bainitic AHSS sheets to the capabilities and limitations of existing facilities at ArcelorMittal Dofasco's Hamilton, ON, plant, and understand the microstructural factors controlling the strength and damage performance of carbide-free bainitic sheets. (b) Train a Ph.D. student with a unique opportunity to tackle the entire span of product development, ranging from alloy design to process optimization and product assessments while exposed to both pilot-scale facilities of CanmetMATERIALS and academic research environment of McMaster University.

在开发高级高强度钢（AHSS）以减轻车辆重量（改善燃油经济性/降低排放）和抗崩溃（改善的被动安全性）方面，正在花费强烈的研究工作。这导致了许多第三代（3G）钢的发展。 尽管一些最新的3G钢已经在实验室规模上证明了所需的特性，但最佳的热机械处理要求以商业生产这些等级超出了当前的加拿大植物能力。此外，升级生产设施的高资本成本可能会引起全球钢铁制造商在加拿大以外的地点集中这些关键的高增值产品的生产。为了减轻这种风险，麦克马斯特大学和Canmetmaterials将研究特定类型的贝恩特钢的处理和性能，这些钢钢非常适合在Arcelormittal Dofasco在汉密尔顿的Arcelormittal Dofasco的现有连续镀锌线（CGL）进行处理。 目标性能是超过1150MPa的拉伸强度，总伸长率接近20％，这大大超过了加拿大钢铁工厂生产的当前AHSS商业产品的特性（例如780和980MPA等级）。此外，需要改善形成响应的延展性（例如拉伸法兰利率）才能标记复杂的自动体结构零件。尚未对所提出的CFB板的损伤性能进行充分研究，并且此类AHSS的微观结构损伤特性之间的相互作用尚待确定（知识差距）。 这项研究的主要目的是双重的：（a）量身定制的合金组成和处理参数，无碳化物的贝纳蒂氏菌AHSS纸张板，符合Arcelormittal Dofasco的汉密尔顿的现有设施的能力和局限性，植物，植物，植物，并理解控制碳纤维 - 五型甲虫的强度和损害性能的微观结构因素。 （b）训练博士学位有一个独特的机会来解决整个产品开发的机会，从合金设计到流程优化和产品评估，同时接触了麦克马斯特大学的Canmetmaterials和学术研究环境的试点规模的设施。