Creep-Ageforming of AA2139 With Prior Deformation

本项目的目的是了解一种新型铝合金在蠕变时效成形过程中的组织和机械行为，用于航空航天应用。这包括了解预变形对形状和回弹的影响，以及在可在有限元成形程序中实现的模型中捕获材料的流变响应。该项目将开发精确的实验方法来测量材料的蠕变松弛行为，同时通过透射电子显微镜、差示扫描量热仪等研究合金的析出动力学以及任何发生的耦合作用。这些信息将被用来模拟和验证蠕变松弛响应和微观结构发展。

The aim of this project is to understand the microstructural and mechanical behaviour of a new novel aluminium alloy, during creep-ageforming, of components for aerospace applications. This includes understanding the influence of pre-deformation on the shape and spring back, as well as capturing the material rheological response in a model that can be implemented in an FEM forming code.This project will develop accurate experimental methods to measure the materials creep relaxation behavior while studying the alloys precipitation kinetics, by TEM, DSC etc. and any coupled interactions that occur. This information will be used to model and validate the creep relaxation response and microstructure development.