ANR_Graded hybrid composite steel sheet for packaging applications

包装钢被用于无数的日常产品，从食品和饮料容器到瓶盖和器具。钢的这种应用越来越需要高成形性和高强度的结合。成形性要求越来越复杂的形状，而提高强度允许减少板材厚度，从而节省重量。与这些设计约束相结合的是成本、可回收性和表面特性。这样的性能组合是很难实现的，因此传统上限制了包装钢的强度和厚度。我们在本提案中寻求克服超低碳包装钢中传统强化机制所施加的限制，通过使用一种新的加工路线，包括在薄钢板表面气相沉积一层高度过饱和碳的薄铁层。这将接着是受控退火，以产生成分梯度的杂化复合材料。这条路线将允许大幅度增加产品的强度，而不会显著降低与用于包装钢的传统强化方法相关的延展性。此外，这种加工路线与包装钢的流程（包括随后的涂层技术）是兼容的，因为它只涉及到在薄板上添加碳，它不会降低材料的可回收性。该项目属于NSERC战略拨款优先领域的混合复合材料子主题的竞争性制造。此外，该项目正在提交NSERC-ANR联合研究提案并发呼吁。一个强有力的合作研究项目已经建立，将加拿大团队在材料制造和机械测试方面的专业知识与法国团队相结合

Packaging steels are used in a myriad of everyday products from food and beverage containers to closures and utensils. This application of steel increasingly requires a combination of high formability with high strength. Formability is demanded for increasingly complex shapes while improved strength allows for reduced sheet thickness resulting in weight savings. Coupled to these design constraints are cost, recyclability and surface characteristics. Such combinations of properties are difficult to achieve and thus limits are traditionally placed on the strength and thickness of packaging steels. We seek in this proposal to overcome the limitations imposed by traditional strengthening mechanisms in ultra-low carbon packaging steels through the use of a novel processing route involving the vapour deposition of a thin layer of iron highly supersaturated in carbon to the surface of thin steel sheet. This will be followed by controlled annealing to generate a compositionally graded hybrid composite. This route will allow for substantial increases in strength of the product without the significant decrease in ductility associated with conventional strengthening methods used for packaging steels. Moreover, this processing route is compatible with the flow of packaging steels (including subsequent coating technologies) and as it only involves the addition of carbon to the sheet, it does not degrade the material's recyclability. This project falls under the NSERC strategic Grants priority area of Competitive Manufacturing in the sub-topic of hybrid composite materials. Moreover, this project is being submitted under the NSERC-ANR Concurrent Call for Joint Research Proposals. A strongly collaborative research project has been built combining the expertise of the Canadian team in materials fabrication and mechanical testing with the French