The role of interface region on texture development in clad aluminum sheet products

界面区域对复合铝板产品织构发展的作用

• 批准号: 386413-2009
• 负责人: Diak, Bradley
• 金额: $ 2.23万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=485320
• 关键词: role; interface; region; texture; development

Over the last 100 years the aluminum industry has developed a variety of highly engineered monolithic sheet alloys with uniform through-thickness properties associated with a uniform texture and microstructure. In some cases the alloy surfaces can be tailored for special applications such as corrosion protection by anodizing, or cladding. The cladding process has traditionally consisted of welding a clad alloy sheet onto a core alloy sheet, followed by further roll processing. The result is a mechanical bond of limited integrity which often has a wavy interface containing former surface oxides. Novelis Inc. has developed a new cladding technology called Fusion, which simultaneously casts different aluminum alloy layers into a single rolling ingot. The interface formed between the core and cladding alloy in Fusion is metallurgical, that is it is flat, fully continuous, with no porosity or extraneous oxide phases. To fully exploit the benefits of both the core and clad combinations requires an understanding of how the roll processing optimized for the monolithic alloys alters the evolution of the texture and microstructure in this composite-like material, if at all. Working with Novelis Global Technology Centre, Queen's University researchers will develop complimentary scanning electron microscopy-based micro-texture and micro-focused x-ray diffraction techniques to efficiently quantify the through-thickness texture, microstructure and residual strain development in Fusion alloys targeted for automotive applications. The Fusion product can potentially create a new market for structural aluminum alloys in the automotive sector, and enhance production in the Novelis Kingston, Ontario plant. The research work to be carried out will enable teaching of one M.Sc. candidate and two B.Sc. engineering candidates on deformation texture theory and hands-on experience with state-of-the-art equipment and techniques, which will likely result in new contributions to the scientific literature.

在过去的 100 年里，铝工业开发了各种高度工程化的整体板材合金，这些合金具有均匀的全厚度特性以及均匀的纹理和微观结构。 在某些情况下，合金表面可以针对特殊应用进行定制，例如通过阳极氧化或包覆进行腐蚀防护。 传统上，包覆工艺包括将包覆合金片焊接到芯合金片上，然后进行进一步的轧制加工。 结果是机械结合的完整性有限，通常具有包含先前表面氧化物的波状界面。 诺贝丽斯公司开发了一种名为 Fusion 的新型熔覆技术，该技术可将不同的铝合金层同时铸造成单个轧制锭。 Fusion 中纤芯和包层合金之间形成的界面是冶金界面，即平坦、完全连续、没有孔隙或外来氧化物相。 为了充分利用芯层和包层组合的优势，需要了解针对整体合金优化的轧制加工如何改变这种类复合材料的织构和微观结构的演变（如果有的话）。 女王大学研究人员将与诺贝丽斯全球技术中心合作，开发基于扫描电子显微镜的微观织构和微聚焦 X 射线衍射技术，以有效量化汽车应用融合合金的全厚度织构、微观结构和残余应变发展。 Fusion 产品有可能为汽车行业的结构铝合金创造一个新的市场，并提高诺贝丽斯安大略省金斯顿工厂的产量。 即将开展的研究工作将使一名硕士学位的教学成为可能。候选人和两个理学士学位。工程候选人的变形纹理理论和最先进设备和技术的实践经验，这可能会给科学文献带来新的贡献。