开发高压压铸 (HPDC) 铝合金结构件的热处理方法

IF 2.6 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Metals Pub Date : 2024-09-16 DOI:10.3390/met14091059

Rui Gomes, Gonçalo Soares, Rui Madureira, Rui Pedro Silva, José Silva, Rui Neto, Ana Reis, Cristina Fernandes

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引用次数: 0

摘要

在这项工作中，我们打算研究热处理（T5 和闪蒸 T6）对真空辅助 HPDC 所生产的不同零件的起泡、机械性能和微观结构的影响。这些零件是用一次铝合金和二次铝合金（分别为 AlSi10MnMg 合金和 AlSi10Mg(Fe)合金）生产的。在固溶热处理的所有温度组合（360 ℃ 至 520 ℃）和阶段时间组合（15 分钟和 30 分钟）下，零件都出现了水泡。然而，在进行 T5 热处理时，水泡不再明显。与铸造状态下的机械性能相比，经过这种热处理后，两种铝合金的屈服强度都提高了 64%，AlSi10Mg（Fe）合金的 UTS 提高了 31%，AlSi10MnMg 合金的 UTS 提高了 24%。不过，延展性有所下降。与原铝合金 AlSi10MnMg 相比，AlSi10Mg(Fe)合金含有大量杂质（尤其是铁），从而降低了机械性能。

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Development of Heat Treatments for Structural Parts in Aluminium Alloys Produced by High-Pressure Die Casting (HPDC)

In this work, we intended to study the effect of heat treatments (T5 and flash T6) on blistering, mechanical properties and microstructure for different parts produced by vacuum-assisted HPDC. These parts were produced with primary and secondary aluminium alloys (AlSi10MnMg alloy and AlSi10Mg(Fe) alloy, respectively). The parts presented blisters for all combinations of temperature (between 360 °C and 520 °C) and stage times (15 and 30 min) of solution heat treatments. However, when subjected to the T5 heat treatment, blisters were no longer visible. With this heat treatment, there was an increase in yield strength of 64% for both aluminium alloys and an increase in UTS of 31% in AlSi10Mg(Fe) alloy and of 24% in AlSi10MnMg alloy, when compared to the mechanical properties in the as-cast state. However, there was a decrease in ductility. The AlSi10Mg(Fe) alloy presented a lot of contaminations (especially iron), which impaired the mechanical properties compared to the primary aluminium alloy, AlSi10MnMg.

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来源期刊

Metals MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

4.90

自引率

13.80%

发文量

1832

审稿时长

1.5 months

期刊介绍： Metals (ISSN 2075-4701) is an open access journal of related scientific research and technology development. It publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Metals provides a forum for publishing papers which advance the in-depth understanding of the relationship between the structure, the properties or the functions of all kinds of metals.