Electrical conductivity, magnetic and fatigue properties of aluminum matrix composites reinforced with nano-titanium dioxide (TiO2)

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, COMPOSITES Nanocomposites Pub Date : 2020-04-02 DOI:10.1080/20550324.2020.1769976

Manal Hadi Jaber, G. Aziz, A. Mohammed, Hussain J. AL-AIKawi

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引用次数: 15

Abstract

Abstract Aluminum matrix composites are widely used in many structural application due to properties like high specific strength, wear resistance, lightweight and fatigue properties. The aim of the current work is to investigate the effect of the addition of nanosize participles to AA6063-T4 aluminum alloy on the electrical conductivity, magnetic and fatigue properties of composites produced by stir casting method. It was revealed that the AA6063-T4/ composites were successfully prepared with 3 wt%, 5 wt% and 7 wt% TiO2 using a stir casting technique with electrical conductivity increasing with increasing amount of Also it was found that the electrical conductivity of all composites was higher than the base metal matrix and the conductivity was proportion to the frequency for both matrix and composites. The magnetic studies revealed an improvement of the nanocomposites in comparison with the base metal. The fatigue life and fatigue strength of 7 wt% TiO2 composite was found to be higher than that of other composites and base matrix. Graphical Abstract

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纳米二氧化钛(TiO2)增强铝基复合材料的电导率、磁性和疲劳性能

摘要铝基复合材料具有高比强度、耐磨损、轻量化和抗疲劳等特点，在许多结构应用中得到了广泛的应用。研究了在AA6063-T4铝合金中添加纳米分词对搅拌铸造复合材料的导电性、磁性和疲劳性能的影响。结果表明:采用搅拌铸造法制备了3 wt%、5 wt%和7 wt% TiO2的复合材料，复合材料的电导率随TiO2用量的增加而增加，复合材料的电导率均高于母材基体，且电导率与基体和复合材料的频率成正比。磁性研究表明，与母材相比，纳米复合材料有了改进。结果表明，7wt % TiO2复合材料的疲劳寿命和疲劳强度高于其他复合材料和基体。图形抽象

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