This study aims to investigate the production and abrasive wear rate of functionally graded TiB2/Al composites. TiB2 particles have been spontaneously formed in liquid matrix using in situ technique. The properties of composites such as hardness, abrasive wear rate and microstructure have been examined.,In situ TiB2 reinforcement phase was synthesized by using a liquid Al–Ti–B system. A semi-solid composite (Al(l)-TiB2(s)) prepared at 900°C was solidified under a centrifugal force to both grade functionally and give the final shape to materials. Abrasive wear test of materials was conducted using the pin-on-disk method at room temperature. The wear tests were carried out with two different loads of 1 Newton (N) and 2 N, a sliding velocity of 3.5 m s−1 and a sliding distance of 75 m.,This research provided the following findings; TiB2 particles can be successfully synthesized with in situ reaction technique in molten aluminum. It was determined that abrasive wear rate increases with increasing load and decreases with increasing TiB2 reinforcement content within matrix.,In previous studies, there have been many trials on the in situ production of TiB2-reinforced aluminum matrix composites. However, there are few studies on production of in situ TiB2-reinforced aluminum matrix functionally graded materials. At the same time, there is no study that the properties of composite, such as hardness and abrasive wear rate, are examined together according to centrifugal force.,The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-12-2019-0538/

中文翻译：

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TiB2 增强功能梯度铝基材料的制备和表征

本研究旨在研究功能梯度 TiB2/Al 复合材料的生产和磨料磨损率。TiB2 颗粒是使用原位技术在液体基质中自发形成的。研究了复合材料的硬度、磨料磨损率和微观结构等性能。使用液态 Al-Ti-B 体系合成了原位 TiB2 增强相。在 900°C 下制备的半固态复合材料 (Al(l)-TiB2(s)) 在离心力下固化，达到功能等级并赋予材料最终形状。材料的磨粒磨损试验采用针盘法在室温下进行。磨损试验在1牛顿(N)和2 N两种不同载荷下进行，滑动速度为3.5 ms-1，滑动距离为75 m。本研究提供了以下发现；TiB2 颗粒可以通过在熔融铝中的原位反应技术成功合成。确定磨粒磨损率随着载荷的增加而增加，随着基体中 TiB2 增强体含量的增加而降低。在以前的研究中，对 TiB2 增强铝基复合材料的原位生产进行了许多试验。然而，关于制备原位TiB2增强铝基功能梯度材料的研究很少。同时，没有研究将复合材料的性能，如硬度和磨料磨损率，根据离心力一起考察。，这篇文章的同行评审历史可在：https://publons.com /publon/10.1108/ILT-12-2019-0538/ 结果表明，磨料磨损率随着载荷的增加而增加，随着基体中 TiB2 增强体含量的增加而降低。在以前的研究中，对 TiB2 增强铝基复合材料的原位生产进行了许多试验。然而，关于制备原位TiB2增强铝基功能梯度材料的研究很少。同时，没有研究将复合材料的性能，如硬度和磨料磨损率，根据离心力一起考察。，这篇文章的同行评审历史可在：https://publons.com /publon/10.1108/ILT-12-2019-0538/ 结果表明，磨料磨损率随着载荷的增加而增加，随着基体中 TiB2 增强体含量的增加而降低。在以前的研究中，对 TiB2 增强铝基复合材料的原位生产进行了许多试验。然而，关于制备原位TiB2增强铝基功能梯度材料的研究很少。同时，没有研究将复合材料的性能，如硬度和磨料磨损率，根据离心力一起考察。，这篇文章的同行评审历史可在：https://publons.com /publon/10.1108/ILT-12-2019-0538/ 在原位生产 TiB2 增强铝基复合材料方面进行了许多试验。然而，关于制备原位TiB2增强铝基功能梯度材料的研究很少。同时，没有研究将复合材料的性能，如硬度和磨料磨损率，根据离心力一起考察。，这篇文章的同行评审历史可在：https://publons.com /publon/10.1108/ILT-12-2019-0538/ 在原位生产 TiB2 增强铝基复合材料方面进行了许多试验。然而，关于制备原位TiB2增强铝基功能梯度材料的研究很少。同时，没有研究将复合材料的性能，如硬度和磨料磨损率，根据离心力一起考察。，这篇文章的同行评审历史可在：https://publons.com /publon/10.1108/ILT-12-2019-0538/