Experimental Analysis of Al–TiC Sintered Nanocomposite on EDM Process Parameters Using ANOVA
Experimental Analysis of Al–TiC Sintered Nanocomposite on EDM Process Parameters Using ANOVA
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DOI：
10.1080/10426914.2015.1048471
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发表时间：
2016-04
影响因子：
4.8
通讯作者：
M. Sivaraj;N. Selvakumar
中科院分区：
文献类型：
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作者：
M. Sivaraj;N. Selvakumar
通过高能机械研磨实现碳化钛（TiC）颗粒的尺寸最小化。随后使用模具组将Al和TiC粉末混合以框定具有95%密度的圆柱形预成型件。将圆柱形预成型件在烧结炉（575°C）中烧结并随后冷却。使用扫描电子显微镜（SEM），场发射扫描电子显微镜和能量色散谱进行表征。电火花加工（EDM）和L9正交表进行实验。研究了电流、脉冲时间和间隙电压等参数对烧结态Al-5%（含≤200 nm和2 μm TiC颗粒增强体）电火花加工金属去除率（MRR）和刀具磨损率（TWR）的影响。采用方差分析（ANOVA）分析了试验方案的合理性以及TiC颗粒添加量对电极磨损率的影响，并考虑了MRR和TWR。通过SEM分析评价了再铸层在电火花加工过程中的演变。
The size minimization of titanium carbide (TiC) particles was done by high-energy mechanical milling. Later Al and TiC powders were mixed to frame cylindrical preforms with 95% density using a die set. The cylindrical preform was sintered in a muffle furnace (575°C) and subsequently cooled. Characterization was done using scanning electron microscope (SEM), field emission scanning electron microscope, and energy-dispersive spectrum. An electrical discharge machining (EDM) and L9 orthogonal array was used to perform the experiments. The present investigation was carried out to optimize parameters such as current, pulse-on time, and gap voltage on metal removal rate (MRR) and tool wear rate (TWR) during EDM of as-sintered Al–5% reinforced with ≤200 nm and 2 µm TiC particle reinforcement. The rationality of the experimental plan and the effect of electrode wear ratio based on TiC particle addition were analyzed using analysis of variance (ANOVA) with consideration to MRR and TWR. The recast layer evolution during EDM process was assessed by SEM analysis.