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首页> 外文期刊>Journal of Materials Engineering and Performance >Microstructure, Mechanical Properties, and Age-Hardening Behavior of an Al-Si-Fe-Mn-Cu-Mg Alloy Produced by Spray Deposition
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Microstructure, Mechanical Properties, and Age-Hardening Behavior of an Al-Si-Fe-Mn-Cu-Mg Alloy Produced by Spray Deposition

机译：喷涂沉积Al-Si-Fe-Mn-Cu-Mg合金的组织，力学性能和时效行为

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摘要

It has been recognized generally that the spray-deposited process is an innovative technique of rapid solidification. In this paper, Al-20Si-5Fe-3Mn-3Cu-1Mg alloy was synthesized by the spray atomization and deposition technique. The microstructure and mechanical properties of the spray-deposited alloy were studied using x-ray diffraction, scanning electron microscopy, transmission electron microscopy (TEM), and tensile tests. It is observed that the microstructure of spray-deposited Al-20Si-5Fe-3Mn-3Cu-1Mg alloy is composed of the α-Al,Si and the particle-like Al_(15)(FeMn)_3Si_2 compounds. The aging process of the alloy was investigated by microhardness measurement, differential scanning calorimetry analysis, and TEM observations. The results indicate that the two types of precipitates, S-Al_2CuMg and σ-Al_5Cu_6Mg_2 precipitate from matrix and improve the tensile strength of the alloy efficiently at both the ambient and elevated temperatures (300 ℃).
机译：公认的是，喷雾沉积法是一种快速固化的创新技术。本文采用喷雾雾化沉积技术合成了Al-20Si-5Fe-3Mn-3Cu-1Mg合金。使用X射线衍射，扫描电子显微镜，透射电子显微镜（TEM）和拉伸试验研究了喷镀合金的微观结构和力学性能。可以看出，喷射沉积Al-20Si-5Fe-3Mn-3Cu-1Mg合金的显微组织由α-Al，Si和颗粒状Al_（15）（FeMn）_3Si_2化合物组成。通过显微硬度测量，差示扫描量热分析和TEM观察研究了合金的时效过程。结果表明，在常温和高温（300℃）条件下，S-Al_2CuMg和σ-Al_5Cu_6Mg_2两种析出物均能从基体中析出，有效提高合金的拉伸强度。

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