ENHANCED PERFORMANCE OF AUTOMOTIVE SHEET ALLOYS VIA CONTROL OF COMPOSITION, THERMAL PROCESSING AND NANOSTRUCTURE

该项目涉及使用现代化设备表征选定的汽车板材合金中合金元素原子尺度簇的形式和特性，这些合金经过单次和多次时效处理，并对此类合金的变形机制和行为进行检查和建模。目的是建立溶质原子和空位的簇在形成控制合金的最终强度和变形行为的沉淀相中的精确作用，并为通过控制合金成分和多次时效处理进一步改善这些合金的强度提供有用的指导。

This project involves characterisation using modern facilities of the form and identity of atomic-scale clusters of alloying elements in selected automotive sheet alloys that have been subjected to single and multiple ageing treatments and examination and modelling of deformation mechanisms and behaviour in such alloys. The aim is to establish the precise role of clusters of solute atoms and vacancies in the formation of precipitate phases that control the final strength and deformation behaviour of the alloys, and to provide useful guidelines for further improvements in strength of these alloys via the control of alloy composition and of multiple ageing treatments.