Compositional analysis of the ageing precipitates in HSA6 alloys via Atom Probe Tomography

高强度材料对结构材料的需求很大，例如飞机或汽车的部件，特别是电动汽车。铝合金具有高的强度重量比，从而减少了车辆的能耗，减轻了电池外壳的重量。Al-Mg-Si（-Cu）合金（6XXX系列）是可热处理合金，具有中等强度和良好的耐腐蚀性，优于其他可热处理铝合金，在各种工业中发挥着重要作用。合金的主要强化机制是析出硬化。直接影响沉淀硬化的因素有很多：(1)；合金的化学成分，如合金元素和(2)。加工如变形和热处理[2]。

High strength materials have been great demands for structural materials, such as components in airplanes or cars, especially in electric vehicles. Aluminium alloys have high strength-to-weight ratio, leading to less energy consumption of vehicles and weight reduction of battery enclosures [1]. Al-Mg-Si(-Cu) alloys (6XXX series) are heat treatable alloys and play an important role in various industries due to their moderately high strength and good corrosion resistance, superior to other heat treatable aluminium alloys. The main strengthening mechanism of the alloy derives from the precipitation hardening. There are many factors that directly affect to precipitation hardening: (1.) Chemical composition of alloys such as alloying elements and (2.) Processing such as deformation and heat treatment [2].