Effect of graphite and granite dust particulates as micro-fillers on tribological performance of Al 6061-T6 hybrid composites
Effect of graphite and granite dust particulates as micro-fillers on tribological performance of Al 6061-T6 hybrid composites
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DOI：
10.1016/j.triboint.2015.07.035
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发表时间：
2015-12-01
影响因子：
6.2
通讯作者：
Nikhil, R. G.
中科院分区：
文献类型：
--
作者：
Pai, Anand;Sharma, Sathya Shankar;Nikhil, R. G.
由于铝及其合金具有高强度重量比和耐腐蚀性，因此在航空航天，汽车等许多行业中对铝及其合金的需求不断增长。我们目前的工作重点是沉淀硬化Al 6061-Gr(p)-花岗岩粉尘杂化复合材料的合成和摩擦学研究。采用液体搅拌铸造技术合成，在进行两体滑动磨损试验之前，进行沉淀硬化处理，使硬度最大化。研究了不同载荷水平、速度和成分对磨损的影响，并对磨损表面的SEM显微图进行了分析。花岗岩粉尘（2 wt%和4 wt%）与石墨（2 wt%）的混合组合显示出更高的抗拉强度、硬度和显着改善的耐磨性，与基合金相比。(C) 2015 Elsevier Ltd.版权所有。
Aluminium and its alloys have an ever growing demand in many industries such as aerospace, automotive due to their high strength to weight ratio and corrosion resistance. Our current work focuses on synthesis and tribological studies of precipitation hardened Al 6061-Gr(p)-granite dust hybrid composites. Liquid stir casting technique is used for synthesis, precipitation hardening treatment imparted for maximising the hardness before subjecting to two-body sliding wear tests. The variation of wear for different levels of load, speed and composition along with SEM micrographs of the worn surfaces has been investigated. Hybrid combinations of granite dust (2 wt% and 4 wt%) with graphite (2 wt%) show higher tensile strength, hardness and significantly improved wear resistance as compared to the base alloy. (C) 2015 Elsevier Ltd. All rights reserved.