Hybrid machining of metal-matrix composite
Hybrid machining of metal-matrix composite
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DOI：
10.1016/j.procir.2019.04.162
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Jin Kim;W. Bai;A. Roy;Lewis C. R. Jones;S. Ayvar-Soberanis;V. Silberschmidt
中科院分区：
文献类型：
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作者：
Jin Kim;W. Bai;A. Roy;Lewis C. R. Jones;S. Ayvar-Soberanis;V. Silberschmidt
颗粒SiC增强铝（SiCp/Al）金属基复合材料（MMC）由于其改善的热机械性能而成为各种航空航天应用的理想材料。然而，由于其高强度，这种材料的常规加工仍然是一个挑战。一个新开发的混合车削工艺被用来显示在MMC的加工速度和完成质量的有形改善。对SiCp/Al复合材料工件的超声辅助车削进行了实验分析，并与常规车削进行了对比。最小量润滑（MQL）也用于实验中并作为实验参数添加。在实验之前，对SiCp/Al试样的显微组织进行了分析。实验结果表明，改善UAT相比，CT的切削力和表面形貌。提出了一种具有前瞻性的二维数值模型，该模型可以合理地预测常规干切削加工的响应。该模型可用于设计设置和确定优化的加工参数，以找到解决当前限制MMC加工的障碍的方法。将CT切削力实验结果与仿真结果进行了比较。
Particulate SiC-reinforced aluminium (SiCp/Al) metal matrix composite (MMC) is ideal for various aerospace applications thanks to its improved thermo-mechanical properties. However, conventional machining of this material remains a challenge due to its high strength. A newly developed hybrid turning process was used to show tangible improvements in the machining rate and finish quality of the MMC. Experimental analysis on ultrasonically assisted turning (UAT) of SiCp/Al workpiece was performed and compared with conventional turning (CT). Minimum Quantity Lubrication (MQL) was also used in the experiment and added as an experimental parameter. Prior to the experiment, the microstructure of SiCp/Al sample was analysed. An experimental result showed improvement in UAT compared to CT for both cutting force and surface topography. A prospective 2D numerical model was also proposed, which can predict the response of conventional dry machining reasonably. The model can be used to design setups and determine optimized machining parameters to find a solution to current obstacles limiting MMC machining. The experimental cutting force result in CT was compared with the simulation.