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An Investigation of Wear Behaviors of AA7075 Al Hybrid Composites

机译:AA7075 Al杂化复合材料的磨损行为研究。

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摘要

This study investigates the wear behavior of Al hybrid composites produced by adding 4 % Ti and different amounts of B_(4)C ( ex situ ) to the AA7075 alloy produced by powder metallurgy method in order to obtain TiAl_(3) ( in situ ) reinforcement phase. Different amounts of B_(4)C (3 %, 6 % and 9 %) were added to the 4 % Ti added AA7075 alloy. Preformed parts were sintered in controlled atmosphere (argon) heat treatment furnace at 580 °C for 4 hours and then cooled. After the sintering process, the samples were characterized with scanning electron microscopy, X-ray diffraction and density and hardness measurements. Wear tests of the samples were conducted at 1ms~(-1) sliding speed, under 30N load for 6 different sliding distances (500–3000 m). As a result of the study, the density of the AA7075 alloys, added 4 % Ti and different amounts of B_(4)C, was observed to decrease by the increasing amount of reinforcement elements. Also, the highest hardness value was measured for the 9 % B_(4)C added AA7075 alloy. Wear test results showed that the weight loss of the aluminum hybrid composites increased with the increasing sliding distance. On the other hand, it was observed that weight losses of composites decreased with increasing amount of B_(4)C.
机译:本研究研究了在粉末冶金法制备的AA7075合金中添加4 %% Ti和不同量的B_(4)C(非原位)制备的Al杂化复合材料的磨损行为,从而获得TiAl_(3)原位加固阶段。将不同量的B_(4)C(3%,6%和9%)添加到4%的添加Ti的AA7075合金中。将预成型件在580°C的可控气氛(氩气)热处理炉中烧结4小时,然后冷却。烧结后,通过扫描电子显微镜,X射线衍射以及密度和硬度测量对样品进行表征。在30N负载下,以6ms的滑动距离(500–3000 m),以1ms〜(-1)的滑动速度进行了样品的磨损测试。研究的结果表明,AA7075合金的密度(添加4%的Ti)和不同数量的B_(4)C会随着增强元素数量的增加而降低。同样,对于添加了9%B_(4)C的AA7075合金,测得了最高硬度值。磨损测试结果表明,铝杂化复合材料的失重随着滑动距离的增加而增加。另一方面,观察到随着B_(4)C的增加,复合材料的重量损失减少。

著录项

  • 来源
    《High temperature materials and processes》 |2018年第7期|619-624|共6页
  • 作者单位

    Department of Manufacturing Engineering, Technology Faculty, Karabuk University, Karabuk Turkey;

    Department of Manufacturing Engineering, Technology Faculty, Karabuk University, Karabuk Turkey;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    AA7075; hybrid composites; wear behaviors;

    机译:AA7075;混合复合材料;磨损行为;

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