Development of a Hot Stamping Process Model for a 2,000 MPa Ultra High Strength Steel

这项研究将作为福特，Promatek研究中心（麦格纳）和滑铁卢大学和圭尔夫大学之间的合作进行，将解决一个新的超高强度钢合金，Usibor 2000-AS的热冲压和最终性能。这种合金具有2,000 MPa的强度，相对于目前的1,500 MPa强度合金，使其对于汽车防侵入结构应用具有吸引力。然而，目前缺乏这种合金的工艺模型和表征数据，这是商业采用的障碍。因此，将开发一个热冲压工艺模型，以支持工艺和产品设计和优化，其中将包括表征数据和子模型：（i）在该工艺中使用的大型（100米）辊底炉内的热传递，涂层和基材演变;以及（ii）高温成形（500-850摄氏度）期间的本构行为和可成形性。开发的工艺模型和数据将通过充分利用材料能力来减轻产品重量，从而将结构部件厚度减少到1.0 mm。预计将有多达40%的车身结构部件进行热冲压，该项目改进的模拟模型和工艺效率将有助于保持和潜在地增加福特和麦格纳在超大型汽车市场的份额结构性市场。该项目所产生的竞争性技术优势将确保加拿大的制造业就业机会，接受培训的高素质学生将建立未来的创新能力。更轻、更安全、更省油的汽车将在加拿大制造，并在世界各地行驶。

This research, to be undertaken as a collaboration between Ford, Promatek Research Centre (Magna) and the Universities of Waterloo and Guelph, will address the hot stamping and final properties of a new ultra high strength steel alloy, Usibor 2000-AS. This alloy has a strength of 2,000 MPa making it attractive for automotive anti-intrusion structural applications relative to current 1,500 MPa strength alloys. However, the current lack of process models and characterization data for this alloy represents a barrier to commercial adoption. Thus, a hot stamping process model will be developed to support process and product design and optimization that will include characterization data and sub-models of: (i) heat transfer, coating and substrate evolution within the large-scale (100 m) roller hearth furnaces used in this process; and (ii) constitutive behaviour and formability during high temperature forming (500-850 Celsius). The developed process models and data will enable product weight reduction by fully utilizing the material capabilities, resulting in structural part thickness reductions to 1.0 mm. With up to 40% of car body structural parts projected to be hot stamped, the improved simulation models and process efficiencies from this project will contribute to sustain and potentially increase Ford and Magna's market share in the very large automotive structural market. Competitive technological advantage stemming from this project will secure manufacturing jobs in Canada and the highly qualified students to be trained will establish future innovation capacity. Lighter, safer, more fuel efficient vehicles will be built in Canada and driven around the world.