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Study on hardening mechanisms in aluminium alloys

机译：铝合金硬化机理的研究

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The Al-Zn-Mg alloys are most commonly used age-hardenable aluminium alloys. The hardening mechanism is further enhanced in addition of Sc. Sc additions to aluminium alloys are more promising. Due to the heterogeneous distribution of nano-sized Al3Sc precipitates hardening effect can be accelerated. Mainly, highlight on hardening mechanism in Al-Zn-Mg alloys with Sc effect is to study. In addition, several characterisations have been done to age-hardening measurements at elevated temperatures from 120oC to 180 oC. The ageing kinetics has also been calculated from Arrhenius equation. Furthermore, friction stir processing (FSP) can be introduced to surface modification process and hardened the cast aluminium alloys. In this study, hardening mechanism can be evaluated by Vicker's hardness measurement and mechanical testing is present task.
机译：Al-Zn-Mg合金是最常用的时效硬化铝合金。除Sc外，硬化机制进一步增强。在铝合金中添加Sc更有希望。由于纳米级Al3Sc沉淀物的不均匀分布，可以加速硬化作用。主要研究具有Sc效应的Al-Zn-Mg合金的硬化机理。此外，在120oC至180oC的高温下，已经进行了一些表征以进行时效硬化测量。老化动力学也已根据Arrhenius方程计算得出。此外，可以将摩擦搅拌工艺（FSP）引入到表面改性工艺中并硬化铸造铝合金。在这项研究中，硬化机制可以通过维氏硬度测量来评估，而机械测试是当前的任务。

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