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首页> 外文期刊>Archives of Foundry Engineering >Microstructural and Mechanical Characterization of Al-0.80Mg-0.85Si-0.3Zr Alloy
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Microstructural and Mechanical Characterization of Al-0.80Mg-0.85Si-0.3Zr Alloy

机译：Al-0.80Mg-0.85Si-0.3Zr合金的组织和力学性能

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In this study, Al-0.80Mg-0.85Si alloy was modified with the addition of 0.3 wt.-% zirconium and the variation of microstructural features and mechanical properties were investigated. In order to produce the billets, vertical direct chill casting method was used and billets were homogenized at 580 °C for 6 h. Homogenized billets were subjected to aging practice following three stages: (i) solution annealing at 550 °C for 3 h, (ii) quenching in water, (iii) aging at 180 °C between 0 and 20 h. The hardness measurements were performed for the alloys following the aging process. It was observed that peak hardness value of Al-0.80Mg-0.85Si alloy increased with the addition of zirconium. This finding was very useful to obtain aging parameters for the extruded hollow profiles which are commonly used in automotive industry. Standard tensile tests were applied to aged profiles at room temperature and the results showed that modified alloy had higher mechanical properties compared to the non-modified alloy.
机译：在这项研究中，通过添加0.3％（重量）的锆对Al-0.80Mg-0.85Si合金进行了改性，并研究了其显微组织和力学性能的变化。为了生产坯料，使用立式直接冷铸法并将坯料在580℃下均质化6小时。对均质化的钢坯进行以下三个阶段的时效处理：（i）在550°C下进行溶液退火3 h，（ii）在水中淬火，（iii）在180°C下在0到20 h之间进行时效。在时效过程之后对合金进行硬度测量。观察到，随着锆的添加，Al-0.80Mg-0.85Si合金的峰值硬度值增加。这一发现对于获得汽车工业中常用的挤压空心型材的时效参数非常有用。在室温下对时效型材进行标准拉伸试验，结果表明，与未改性合金相比，改性合金具有更高的机械性能。

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