Effect of ZrO2 addition on the dry sliding wear behavior of laser clad Ti6Al4V alloy
Effect of ZrO2 addition on the dry sliding wear behavior of laser clad Ti6Al4V alloy
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DOI：
10.1016/j.wear.2015.02.056
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发表时间：
2015-04
期刊：
影响因子：
5
通讯作者：
Babatunde Abiodun Obadele;A. Andrews;P. Olubambi;M. Mathew;S. Pityana
中科院分区：
文献类型：
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作者：
Babatunde Abiodun Obadele;A. Andrews;P. Olubambi;M. Mathew;S. Pityana
研究了Ti6Al4V合金及3种激光熔覆复合涂层（TiNi、TiNi5ZrO2和TiNi10ZrO2）的显微组织与磨损性能的关系。干滑动磨损试验进行了使用球盘磨损试验机在不同的负载。WC被用作配合面材料。结果表明，ZrO2的加入使TiNi的组织由枝晶细化为花状组织。还观察到显微压痕硬度值的改善。结果表明，ZrO2颗粒的加入降低了TiNi合金的磨损体积。ZrO2的加入对TiNi合金的磨损性能有显著影响。磨损表面和磨屑分析表明，Ti6Al4V合金的主要磨损机制是犁削粘着磨损。
The relationship between microstructure and wear behavior of Ti6Al4V alloy and three laser-clad composite coatings (TiNi, TiNi5ZrO2, and TiNi10ZrO2) was investigated. Dry sliding wear tests were carried out using a ball-on-disk wear tester under varying loads. WC was used as the counterface material. The results showed that additions of ZrO2refined the microstructure of TiNi from a dendritic to a flower-like microstructure. An improvement in the microindentation hardness value was also observed. Results indicated that the wear volume of clad TiNi alloy decreased with the addition of ZrO2particles. The microstructural changes due to ZrO2additions played a significant role in the wear performance of the clad TiNi alloy. Analysis of worn surfaces and wear debris indicated that the dominant wear mechanism for the Ti6Al4V alloy was adhesive wear with ploughing.