The rapid solidification of AL-Ce alloys and FeCrMnNiCo high entropy alloy

AL-Ce合金和FeCrMnNiCo高熵合金的快速凝固

• 批准号: 530555-2018
• 负责人: Henein, HaniH
• 金额: $ 7.21万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=746825
• 关键词: rapid; solidification; AL; Ce; alloys

Solidification of alloys is a complex phenomenon arising in many modern experimental techniques and industrial technologies related to casting and surfaces processing. The variation of different conditions of solidification (such as undercooling or cooling rate) gives a possibility to control the morphology and size of crystal structure, which substantially influence physical and chemical properties of alloys. In particular, deep undercooling of alloys below equilibrium liquidus, and eutectics results in rapid solidification and yields materials with improved mechanical, magnetic and electrical properties. The proposed 4 year project is a collaboration between Equispheres and the Univ. of Alberta. We will generate powder samples using Impulse Atomization (IA) - a single fluid rapid solidification technique. In Years 1 to 4 of this project, Al-Ce alloys will be generated. The latter is expected to be supersaturated in the alpha matrix due to undercooling. The solidified samples will be characterized using SEM, X-Ray diffraction, differential scanning calorimetry and microhardness. In Years 3 and 4, we will also be studying the rapid solidification of a high Entropy Alloy (HEA) FeCrMnNiCo. In addition, state of the art characterization such as 3D-micro and nano-tomography and Neutron Diffraction will be carried out. The characterization effort will lead to an understanding of the quantification of undercooling temperatures. These results will provide a basis for understanding the solidification structure resulting from solidification processes such as 3D printing and high pressure die casting where cooling rates and heat fluxes are similar to IA. The proposed alloy systems are important for automotive and aerospace applications where Canada plays a major role in production and manufacturing. Two graduate students will be trained in Canada.

合金的凝固是一种复杂的现象，它在许多现代实验技术和与铸造和表面处理有关的工业技术中产生。固化条件的变化（例如底冷或冷却速率）可以控制晶体结构的形态和大小，从而实质上影响合金的物理和化学特性。特别是，液态均衡的合金对合金的深层冷却，以及共素化合物会产生快速固化，并产生具有改善的机械，磁性和电性能的材料。 拟议的4年项目是Equispheres和Univ之间的合作。艾伯塔省。我们将使用脉冲雾化（IA）生成粉末样品 - 单个流体快速固化技术。在该项目的第1至4年中，将生成Al-CE合金。由于过冷的过冷，预计后者将在α基质中过饱和。固化样品将使用SEM，X射线衍射，差异扫描量热法和显微硬度表征。 在第3和4年度，我们还将研究高熵合金（HEA）FECRMNNICO的快速固化。 此外，将执行艺术特征的状态，例如3D-Micro和纳米谱学和中子衍射。 表征工作将导致对卧生温度定量的理解。 这些结果将为理解固化过程（例如3D打印和高压铸造）产生的凝固结构提供基础，在冷却速率和热通量与IA相似。拟议的合金系统对于加拿大在生产和制造中发挥重要作用的汽车和航空航天应用很重要。两名研究生将在加拿大接受培训。