Friction and Wear Performance of in-Situ (TiC+TiB)/Ti6Al4V Composites

IF 0.6 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY 稀有金属材料与工程 Pub Date : 2018-12-01 DOI:10.1016/S1875-5372(19)30008-6
Bai Xue, Jin Yunxue, Lu Xuan, Chen Yanan
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引用次数: 5

Abstract

(TiC+TiB)/Ti6Al4V composites with different TiC and TiB contents were prepared by in situ synthesis. The influence of load on the dry sliding friction and wear performance of in-situ (TiC+TiB)/Ti6Al4V composites (TMC) was studied by HT-1000 friction and wear testing machine, and the wear behavior of the composites was also investigated by scanning electron microscopy (SEM) and Bruker 3D profilometer. The results show that the wear resistance of TMC is improved by the formation of TiC and TiB phases compared to the Ti6Al4V matrix. For the composites with different volume fractions of reinforcing phases, the wear rate and wear depth increase with the increase of the applied load, and the friction coefficient decreases and fluctuates within a small range. Under low loads, the worn surface is covered with grooves and a small amount of wear debris; under heavy loads, the worn surface is covered with narrow and shallow grooves and a large amount of wear debris. The wear mechanism is abrasive wear and oxidation wear. As the load increases, the size of the debris increases.

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原位(TiC+TiB)/Ti6Al4V复合材料的摩擦磨损性能
采用原位合成方法制备了TiC和TiB含量不同的(TiC+TiB)/Ti6Al4V复合材料。利用HT-1000摩擦磨损试验机研究了载荷对原位(TiC+TiB)/Ti6Al4V复合材料(TMC)干滑动摩擦磨损性能的影响,并利用扫描电镜(SEM)和Bruker 3D型面仪研究了复合材料的磨损行为。结果表明:与Ti6Al4V基体相比,通过TiC相和TiB相的形成,TMC的耐磨性得到了提高;对于含有不同体积分数增强相的复合材料,磨损率和磨损深度随外加载荷的增加而增加,摩擦系数减小并在小范围内波动。在低载荷下,磨损表面覆盖有沟槽和少量磨损碎屑;在重载荷作用下,磨损表面覆盖有窄而浅的沟槽和大量的磨损碎屑。磨损机理为磨粒磨损和氧化磨损。随着载荷的增大,碎片的尺寸也随之增大。
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来源期刊
稀有金属材料与工程
稀有金属材料与工程 工程技术-材料科学:综合
CiteScore
1.30
自引率
57.10%
发文量
17973
审稿时长
4.2 months
期刊介绍:
期刊最新文献
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