Casting and characterization of Cu-Al-bilayer composites

Cu-Al双层复合材料的铸造和表征

基本信息

批准号：
278170374
负责人：
Professorin Dr.-Ing. Babette Tonn
金额：
--
依托单位：
Lehrstuhl für Umformtechnik und Gießereiwesen
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2015
资助国家：
德国
起止时间：
2014-12-31 至 2017-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/278170374?language=en
关键词：
Casting characterization Cu Al bilayer

项目摘要

Metallic composite materials are of great technical importance. They allow to combine specific positive properties of different materials into one component. In recent years research on the production of copper-aluminum-composites via composite casting has been done with the purpose of combining the excellent electrical and thermal properties of copper with the low density, price and the also good electrical properties of aluminum.Up to now the basic correlations between processing conditions, metallurgic processes and resultant properties of the composites have not been investigated sufficiently. Therefore it is difficult to evaluate or predict the suitability of cast Cu-Al-composites for further metal forming processing. Of particular interest are the effects of the thermic conditions inside the composite zone on the formation of the boundary layer and the technological properties. Furthermore no numerical models exist to simulate the resulting microstructure in the composite zone.Therefore basic knowledge and comprehension of the physical mechanisms of the formation of the boundary layer in dependence on the casting conditions are necessary. For this purpose basic bilayer-composite-casting experiments will be applied to ensure a repeatable production of Cu-Al-composites under varying casting conditions. In addition a simulation model to predict the resulting microstructure in dependence on the casting conditions will be developed and validated. All in one the comprehension of the correlations between the microstructure, the physical and technological properties and the suitability for further metal forming processing of cast Cu-Al-composites has to be enhanced.

金属复合材料的技术重要性非常重要。它们允许将不同材料的特定阳性特性组合到一个组件中。近年来，对通过复合铸造生产铜 - 铝合物的生产的研究是为了将铜的出色电气和热性能与铝的低密度，价格以及铝的良好电气性能相结合。现在，在处理条件，金属过程和组合物质之间的基本相关性不足。因此，很难评估或预测铸造铜质材料对于进一步的金属形成加工的适用性。特别感兴趣的是复合区内的热条件对边界层形成和技术特性的影响。此外，没有数值模型来模拟复合区域中所得的微观结构。因此，必须基本知识和理解边界层形成的物理机制，以依赖铸造条件。为此，将采用基本双层复合铸造实验，以确保在不同的铸造条件下重复生产Cu-Al-Composites。此外，将开发和验证一个模拟模型，以预测依赖铸造条件的微观结构。必须增强对微观结构，物理和技术特性以及对进一步的金属形成铸造材料加工的适用性之间相关性的理解。