Al2O3纳米颗粒体积分数对搅拌摩擦焊接纳米复合材料组织和力学性能的影响

IF 4.2 3区 材料科学 Q2 MATERIALS SCIENCE, COMPOSITES
T. Singh, S. Tiwari, D. Shukla
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引用次数: 24

摘要

摘要本研究的目的是研究Al2O3纳米颗粒体积百分比对6061-T6铝合金基颗粒-纳米复合材料(P-NCs)摩擦学、力学和显微组织特性的影响。采用光学显微镜(OM)和扫描电镜(SEM)对制备的纳米复合材料进行了显微组织分析,确定了Al2O3纳米颗粒在熔核区的分布;(b)在铝合金基体上形成纳米复合材料的深度;(c)断裂磨损特性。结果表明,在p - nc焊核区垂直x截面上,制备的p - nc深度为3286µm;随着Al2O3纳米颗粒体积百分比的增加,材料的显微硬度大幅增加,达到125 HV,高于接收到的AA6061-T6。实验还发现,与添加0.2和0.4 vol%的Al2O3纳米颗粒相比,添加0.3 vol%的Al2O3纳米颗粒可显著提高p - nc的抗拉强度和耐磨性。相应的力学和磨损性能结果与显微组织和断口形貌结果相关。图形抽象
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of Al2O3 nanoparticles volume fractions on microstructural and mechanical characteristics of friction stir welded nanocomposites
Abstract The objective of the present study is to investigate the effect of Al2O3 nanoparticles volume percentage on tribological, mechanical and microstructural characteristics of 6061-T6 aluminum alloy based particulate-nanocomposite (P-NCs) fabricated using friction stir welding (FSW) process. Optical microscopy (OM) and scanning electron microscopy (SEM) was employed to evaluate the (a) microstructures of the produced nanocomposites to ascertain the distribution of Al2O3 nanoparticles in the nugget zone; (b) nanocomposite depth formed on Al-alloy matrix, and (c) fractured and wear characteristics. Results reveal that the produced P-NCs had a depth of 3286 µm across the perpendicular x-section of the weld nugget zone of P-NCs. With the increase in a volume percentage of Al2O3 nanoparticles there was a tremendous increment in the microhardness up to 125 HV which is higher than as-received AA6061-T6. It was also noticed that the tensile strength and the wear resistance of produced P-NCs were significantly increased at 0.3 vol% of Al2O3 nanoparticles as compared to 0.2 and 0.4 vol%. The corresponding mechanical and wear properties results were correlated to microstructure and fractography results. Graphical Abstract
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来源期刊
Nanocomposites
Nanocomposites Multiple-
CiteScore
7.40
自引率
15.20%
发文量
18
审稿时长
16 weeks
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