Effect of ZrO2 Addition on Mechanical Properties and Microstructure of Al-9Zn-6Mg-3Si Matrix Composites Manufactured by Squeeze Casting

2nd International Conference on Robotics and Mechantronics

计算机科学;无线电电子学

Syarifudin, Muhammad^1 ; Hale, Elisabeth Nadya^1 ; Sofyan, Bondan Tiara^1

Department of Metallurgy and Materials Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, 16424, Indonesia^1

关键词: Aluminum matrix composites;    High strength and toughness;    Materials characterization;    Microstructure analysis;    Optical emission spectroscopies (OES);    Optical microscopes;    Properties and microstructures;    X ray fluorescence;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/517/1/012001/pdf
DOI  :  10.1088/1757-899X/517/1/012001

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Steel is used because of its high strength and toughness, but it has high density, therefore lighter material with comparable toughness is developed. One alternative is aluminum matrix composite with zirconia (ZrO2) as the reinforcement with high fracture toughness. Al-9Zn-6Mg-3Si (wt. %) composites were developed with addition of 2.5, 5, and 7.5 vol. % ZrO2 through squeeze casting. To improve toughness, the composite was solution treated at 450 °C for 1 h, then aged at 200 °C for 1 h. Materials characterization included Optical Emission Spectroscopy (OES), Rockwell B hardness testing, impact testing, fractography analysis, microstructure analysis using Optical microscope (OM) and Scanning Electron Microscope (SEM) / Energy Dispersive X-Ray Spectroscopy (EDS), as well as X-Ray Fluorescence (XRF). The results showed that the more ZrO2 particles, the higher porosity and the lower the hardness and the impact values, both in as-cast condition and after ageing at 200 °C at 1 h.