A New Approach to Advanced Steels via Cluster and Precipitate Strengthening

界面相纳米粒子和团簇的形成是提高先进高强度钢强度的新途径。在只有溶质团簇的合金中，通过控制温度-时间历史，可以获得异常高的强度水平。然而，团簇和沉淀形成的确切机制以及团簇的强化机制还不清楚，也不知道如何控制团簇的形成。该项目旨在利用原子探针断层扫描和电子显微镜等先进表征技术，对团簇和纳米沉淀物的形成有一个基本的了解，并确定它们对强化和其他机械性能的贡献。

Formation of interphase nanoparticles and clusters is a new approach to increase strength in advanced high strength steels. Exceptionally high strength levels can be achieved in alloys that only have solute clusters by controlling the temperature-time history. However, the exact mechanism for the formation of clusters and precipitates and the cluster strengthening mechanism are not understood, nor do we know how to control cluster formation. This project aims to develop a fundamental understanding of the formation of clusters and nanoprecipitates and determine their contribution to strengthening and other mechanical properties using advanced characterisation techniques such as atom probe tomography and electron microscopy.