The Effect of Milling Time on the Mechanical Properties of ZA27/Al2O3 Nanocomposites

Müslim Çelebi, A. Çanakçı, Serdar Özkaya, A. H. Karabacak
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引用次数: 6

Abstract

In this study, ZA27/Al2O3 nanocomposites reinforced with 1 vol.% Al2O3 nanoparticles were produced using mechanical milling and hot pressing method. The milling time was changed between 1h to 8h. The hot pressing prose was performed in vacuum at 432℃ and pressure of 600 MPa. The effect of milling time on the density, hardness and tensile strength of the ZA27/Al2O3 nanocomposites were investigated. The results show that the increase in milling time resulted as a decrease in the density of nanocomposite due to the change in hardness of that. It was observed that the tensile strength of the nanocomposites reached their maximum value (163 MPa) at milling time of 2h and then decreased linearly with increasing milling time. Moreover, the hardness of the nanocomposite milled for 8h was obtained as 155 HB which is about 9 % higher than the hardness of nanocomposite milled for 1h. A linearly increase was also observed the hardness of nanocomposites.
铣削时间对ZA27/Al2O3纳米复合材料力学性能的影响
采用机械铣削和热压相结合的方法,制备了体积% Al2O3纳米颗粒增强ZA27/Al2O3纳米复合材料。铣削时间在1h ~ 8h之间变化。热压实验在真空条件下进行,温度为432℃,压力为600 MPa。研究了铣削时间对ZA27/Al2O3纳米复合材料密度、硬度和抗拉强度的影响。结果表明:随着铣削时间的延长,纳米复合材料的硬度发生变化,导致纳米复合材料的密度降低;结果表明,复合材料的抗拉强度在铣削时间为2h时达到最大值(163 MPa),然后随着铣削时间的增加呈线性下降。同时,经8h研磨的纳米复合材料的硬度为155 HB,比经1h研磨的纳米复合材料硬度提高了约9%。纳米复合材料的硬度呈线性增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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