The Effect of Heat Treatment on the Mechanical Properties and Oxidation Resistance of AlSi10Mg Alloy

IF 2.6 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Arabian Journal for Science and Engineering Pub Date : 2024-04-16 DOI:10.1007/s13369-024-08971-1

Murat Beder, Serhatcan Berk Akçay, Temel Varol, Hamdullah Çuvalcı

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Abstract

In this study, the microstructure, hardness, tensile strength, and dry wear properties of the cast AlSi10Mg alloy as well as the effects of processing parameters on the oxidation behavior of this alloy were investigated. In this context, AlSi10Mg (wt%) alloy was produced by gravity die casting method, and then, air cooling, quenching, and T6 treatment were applied. The microstructure of the alloy was investigated using an optical microscope, SEM, and EDS. Additionally, thermogravimetric analysis (TGA) was used to determine the effect of processing parameters on the oxidation behavior of the samples. The friction and wear properties of the alloy were investigated using a ball-on-disk wear test device. It was founded that the as-cast AlSi10Mg alloy's microstructure contained phases of α(Al), Si, and β-Mg₂Si. It has been observed that the microstructure of the cast AlSi10Mg alloy gradually turns into a spherical form when quenching and air-cooling heat treatments are applied. Also, T6 heat treatment led to further spheroidization of Si particles, formation of β-Mg2Si precipitates, and elimination of the Chinese script morphology of the β-Mg₂Si phase. It was observed that the yield strength of the AlSi10Mg alloy in the as-cast state decreased negligibly compared to the air-cooled state, while there was an increase of up to 70% in the aging-treated condition. The results show that the tensile strength of the as-cast AlSi10Mg alloy increased by 115% after aging. Additionally, it was found that the AlSi10Mg alloy's wear resistance increased with the aging process.

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热处理对 AlSi10Mg 合金机械性能和抗氧化性的影响

本研究探讨了铸造 AlSi10Mg 合金的微观结构、硬度、抗拉强度和干磨损性能，以及加工参数对该合金氧化行为的影响。在此背景下，采用重力压铸法生产了 AlSi10Mg (wt%) 合金，然后进行了空冷、淬火和 T6 处理。使用光学显微镜、扫描电镜和 EDS 对合金的微观结构进行了研究。此外，还使用热重分析（TGA）确定了加工参数对样品氧化行为的影响。使用盘上球磨损试验装置研究了合金的摩擦和磨损特性。研究发现，铸态 AlSi10Mg 合金的微观结构中含有 α(Al)、Si 和 β-Mg2Si 相。据观察，在进行淬火和空冷热处理时，铸造的 AlSi10Mg 合金的微观结构会逐渐变成球形。此外，T6 热处理导致 Si 颗粒进一步球化，形成 β-Mg2Si 沉淀，并消除了 β-Mg2Si 相的汉字形态。据观察，AlSi10Mg 合金在铸造状态下的屈服强度比空冷状态下的屈服强度降低了几乎可以忽略不计，而在时效处理状态下的屈服强度提高了多达 70%。结果表明，铸态 AlSi10Mg 合金的抗拉强度在时效处理后提高了 115%。此外，还发现 AlSi10Mg 合金的耐磨性随着时效过程的进行而增加。

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来源期刊

Arabian Journal for Science and Engineering MULTIDISCIPLINARY SCIENCES-

CiteScore

5.70

自引率

3.40%

发文量

993

期刊介绍： King Fahd University of Petroleum & Minerals (KFUPM) partnered with Springer to publish the Arabian Journal for Science and Engineering (AJSE). AJSE, which has been published by KFUPM since 1975, is a recognized national, regional and international journal that provides a great opportunity for the dissemination of research advances from the Kingdom of Saudi Arabia, MENA and the world.