Putting Atoms Where they are Needed: Segregation for Property Control in Structural Alloys

将原子放在需要的地方：结构合金中财产控制的偏析

• 批准号: RGPIN-2017-04677
• 负责人: Sinclair, Chad
• 金额: $ 2.7万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=638233
• 关键词: Putting; Atoms; Where; they; Needed

From cars to integrated circuits, engineers locate different materials to best exploit their unique properties. It may seem odd then, that the production of structural alloys rarely employs this same optimized strategy. Despite the strong chemistry dependence of many material properties, alloys are typically designed by correlating properties to average chemistry. Recognizing this as an opportunity, our group is at the leading edge of a movement whose aim is to develop emerging processing techniques aided by advanced characterization and simulation tools to ‘put atoms where they are needed’ in engineering alloys. This is providing breakthroughs in new product development by, for example, using the natural tendency of strengthening atoms to migrate to ‘weak’ points in a material. Beyond the potential for new freedom in property design, such a chemically site-specific strategy offers a more efficient use of expensive and/or difficult to source alloying elements at a time where resource availability is an increasingly important consideration.

从汽车到集成电路，工程师们寻找不同的材料，以最好地利用其独特的性能。这可能看起来很奇怪，结构合金的生产很少采用这种相同的优化策略。尽管许多材料的性质具有很强的化学依赖性，但合金通常是通过将性质与平均化学性质相关联来设计的。认识到这是一个机会，我们的团队处于一个运动的前沿，其目标是开发新兴的加工技术，辅以先进的表征和模拟工具，在工程合金中“将原子放在需要的地方”。这为新产品开发提供了突破，例如，利用强化原子迁移到材料中“薄弱”点的自然趋势。除了在性质设计中的新自由度的潜力之外，这种化学位点特异性策略在资源可用性是越来越重要的考虑因素的时候提供了对昂贵和/或难以获得的合金元素的更有效的使用。