ANR_Graded hybrid composite steel sheet for packaging applications

包装钢被用于从食品和饮料容器到封盖和器皿的无数日常产品中。钢的这种应用越来越需要高成形性与高强度的结合。成型性要求越来越复杂的形状，而提高强度允许减少板厚度，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。这些性能的组合很难实现，因此传统上对包装钢的强度和厚度加以限制。我们试图在这个建议，以克服传统的强化机制，通过使用一种新的工艺路线，涉及的碳高度过饱和的铁的薄层的薄钢板的表面的气相沉积超低碳包装钢的限制。这之后将进行受控退火以产生组成梯度混合复合材料。这种途径将允许产品强度的显著增加，而不会显著降低与用于包装钢的常规强化方法相关的延展性。此外，这种工艺路线与包装钢的流程（包括后续涂层技术）兼容，并且由于它只涉及向板材中添加碳，因此不会降低材料的可回收性。该项目福尔斯属于NSERC战略赠款优先领域的竞争性制造的混合复合材料的子主题。此外，该项目是根据NSERC-ANR共同呼吁联合研究提案提交的。一个强有力的合作研究项目已经建立，结合了加拿大团队在材料制造和机械测试方面的专业知识，

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