Materials World Network: Developing a New Mg Alloy with Optimized Texture for Enhanced Formability

镁合金板材在世界范围内受到工业界的关注，其目的是增强轻量化应用。然而，需要具有改进的可乳制性和片材成形性的合金。该项目的目标是在更好地理解晶体织构和合金元素对可成形性的影响的基础上开发新的镁合金。虽然典型的镁锻造合金表现出强的基本织构，在它们之间只有轻微的变化，但最近已经报道，含有稀土元素和/或钇的合金可以形成更无规类型的织构。这种织构可以改善成形性以及降低机械性能的各向异性。织构改性已与再结晶机制的变化，但需要一个更具体的合金添加剂和机制的变化之间的联系，以制定一个有效的合金设计策略。在这个项目中，将有一个强大的实验重点，伴随着晶体塑性建模的纹理对成形性的影响和热力学建模的相稳定性的合作伙伴项目。这种合金开发的综合实验/建模方法将产生具有设计性能的镁合金板材。

Magnesium sheet alloys are in a worldwide spotlight of industrial interest with a view towards enhanced lightweight applications. However, there is a need for alloys with improved roll-ability and sheet formability. The objective of this project is to develop new magnesium alloys based on a better understanding of the influence of crystallographic texture and alloying elements on formability. While typical magnesium wrought alloys exhibit strong basal textures with only slight variations between them, it has recently been reported that alloys containing rare earth elements and/or yttrium can develop a more random type texture. Such a texture could improve formability as well as reduce the anisotropy of mechanical properties. The texture modification has been associated with changes in the recrystallization mechanisms, but a more specific connection between alloying additions and mechanistic changes is required to develop an effective alloy design strategy. There will be a strong experimental focus in this project accompanied by crystal plasticity modelling of the influence of texture on the formability and thermodynamic modelling of phase stability in the partner project. This integrated experimental/modelling approach to alloy development will yield magnesium sheet alloys with designed properties.